diff --git a/XP.Hardware.Detector/bin/Debug/net8.0-windows7.0/XP.Hardware.Detector.deps.json b/XP.Hardware.Detector/bin/Debug/net8.0-windows7.0/XP.Hardware.Detector.deps.json
index 3f740dc..54eff8d 100644
--- a/XP.Hardware.Detector/bin/Debug/net8.0-windows7.0/XP.Hardware.Detector.deps.json
+++ b/XP.Hardware.Detector/bin/Debug/net8.0-windows7.0/XP.Hardware.Detector.deps.json
@@ -1878,7 +1878,10 @@
           "Telerik.UI.for.Wpf.NetCore.Xaml": "2024.1.408"
         },
         "runtime": {
-          "XP.Common.dll": {}
+          "XP.Common.dll": {
+            "assemblyVersion": "1.4.16.1",
+            "fileVersion": "1.4.16.1"
+          }
         },
         "resources": {
           "en-US/XP.Common.resources.dll": {
diff --git a/XP.ImageProcessing.RoiControl/Controls/MeasureEventArgs.cs b/XP.ImageProcessing.RoiControl/Controls/MeasureEventArgs.cs
new file mode 100644
index 0000000..7278450
--- /dev/null
+++ b/XP.ImageProcessing.RoiControl/Controls/MeasureEventArgs.cs
@@ -0,0 +1,31 @@
+using System.Windows;
+
+namespace XP.ImageProcessing.RoiControl.Controls
+{
+    /// <summary>测量完成事件参数</summary>
+    public class MeasureCompletedEventArgs : RoutedEventArgs
+    {
+        public Point P1 { get; }
+        public Point P2 { get; }
+        public double Distance { get; }
+        public int TotalCount { get; }
+        public string MeasureType { get; set; }
+
+        public MeasureCompletedEventArgs(RoutedEvent routedEvent, Point p1, Point p2, double distance, int totalCount)
+            : base(routedEvent)
+        {
+            P1 = p1; P2 = p2; Distance = distance; TotalCount = totalCount;
+        }
+    }
+
+    /// <summary>测量状态变化事件参数</summary>
+    public class MeasureStatusEventArgs : RoutedEventArgs
+    {
+        public string Message { get; }
+
+        public MeasureStatusEventArgs(RoutedEvent routedEvent, string message) : base(routedEvent)
+        {
+            Message = message;
+        }
+    }
+}
diff --git a/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml b/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml
index 409d5d4..be035cd 100644
--- a/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml
+++ b/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml
@@ -17,35 +17,20 @@
     </UserControl.Resources>
     <Border BorderBrush="Transparent" BorderThickness="1" ClipToBounds="True">
         <Grid>
-            <Grid.ColumnDefinitions>
-                <ColumnDefinition Width="Auto" />
-                <ColumnDefinition Width="*" />
-            </Grid.ColumnDefinitions>
-
-            <!-- 左侧控制按钮 -->
-            <Border Grid.Column="0" Background="White" Padding="5">
-                <StackPanel Orientation="Vertical" VerticalAlignment="Top">
-                    <Button x:Name="btnZoomIn" Content="+" Background="White" BorderBrush="LightGray" Width="40" Height="40" Margin="2" Click="BtnZoomIn_Click" />
-                    <Button x:Name="btnZoomOut" Content="-" Background="White" BorderBrush="LightGray" Width="40" Height="40" Margin="2" Click="BtnZoomOut_Click" />
-                    <Button x:Name="btnReset" Content="适应" Background="White" BorderBrush="LightGray" Width="40" Height="40" Margin="2" Click="BtnReset_Click" />
-                </StackPanel>
-            </Border>
-
             <!-- 图像显示区域 -->
-            <Grid Grid.Column="1" x:Name="imageDisplayGrid" ClipToBounds="True">
+            <Grid x:Name="imageDisplayGrid" ClipToBounds="True">
                 <Grid x:Name="transformGrid"
-                      RenderTransformOrigin="0,0"
                       HorizontalAlignment="Center"
                       VerticalAlignment="Center">
+                    <Grid.LayoutTransform>
+                        <ScaleTransform x:Name="scaleTransform"
+                                        ScaleX="{Binding ZoomScale, ElementName=root}"
+                                        ScaleY="{Binding ZoomScale, ElementName=root}" />
+                    </Grid.LayoutTransform>
                     <Grid.RenderTransform>
-                        <TransformGroup>
-                            <ScaleTransform x:Name="scaleTransform"
-                                          ScaleX="{Binding ZoomScale, ElementName=root}"
-                                          ScaleY="{Binding ZoomScale, ElementName=root}" />
-                            <TranslateTransform x:Name="translateTransform"
-                                              X="{Binding PanOffsetX, ElementName=root}"
-                                              Y="{Binding PanOffsetY, ElementName=root}" />
-                        </TransformGroup>
+                        <TranslateTransform x:Name="translateTransform"
+                                            X="{Binding PanOffsetX, ElementName=root}"
+                                            Y="{Binding PanOffsetY, ElementName=root}" />
                     </Grid.RenderTransform>
 
                     <Canvas x:Name="mainCanvas"
diff --git a/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs b/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs
index 669ac4d..134be77 100644
--- a/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs
+++ b/XP.ImageProcessing.RoiControl/Controls/PolygonRoiCanvas.xaml.cs
@@ -7,6 +7,7 @@ using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
+using System.Windows.Media.Imaging;
 using System.Windows.Shapes;
 
 namespace XP.ImageProcessing.RoiControl.Controls
@@ -120,11 +121,23 @@ namespace XP.ImageProcessing.RoiControl.Controls
         private static void OnImageSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
         {
             var control = (PolygonRoiCanvas)d;
-            if (e.NewValue is ImageSource imageSource)
+            if (e.NewValue is BitmapSource bitmap)
+            {
+                // 使用像素尺寸，避免 DPI 不同导致 DIP 尺寸与实际像素不一致
+                control.CanvasWidth = bitmap.PixelWidth;
+                control.CanvasHeight = bitmap.PixelHeight;
+                control.ResetView();
+            }
+            else if (e.NewValue is ImageSource imageSource)
             {
                 control.CanvasWidth = imageSource.Width;
                 control.CanvasHeight = imageSource.Height;
+                control.ResetView();
             }
+
+            // 图像尺寸变化后刷新十字线
+            if (control.ShowCrosshair)
+                control.AddCrosshair();
         }
 
         public static readonly DependencyProperty ROIItemsProperty =
@@ -234,6 +247,417 @@ namespace XP.ImageProcessing.RoiControl.Controls
 
         #endregion Dependency Properties
 
+        #region Measurement Config
+
+        public static readonly DependencyProperty PixelSizeProperty =
+            DependencyProperty.Register(nameof(PixelSize), typeof(double), typeof(PolygonRoiCanvas),
+                new PropertyMetadata(1.0));
+
+        /// <summary>每像素对应的物理尺寸（= 探测器像素尺寸 / 放大倍率），默认 1.0</summary>
+        public double PixelSize
+        {
+            get => (double)GetValue(PixelSizeProperty);
+            set => SetValue(PixelSizeProperty, value);
+        }
+
+        public static readonly DependencyProperty MeasureUnitProperty =
+            DependencyProperty.Register(nameof(MeasureUnit), typeof(string), typeof(PolygonRoiCanvas),
+                new PropertyMetadata("px"));
+
+        /// <summary>测量单位，默认 "px"，可设为 "mm"/"μm"/"cm"</summary>
+        public string MeasureUnit
+        {
+            get => (string)GetValue(MeasureUnitProperty);
+            set => SetValue(MeasureUnitProperty, value);
+        }
+
+        /// <summary>将像素距离转换为物理距离文本</summary>
+        internal string FormatDistance(double pixelDistance)
+        {
+            string unit = MeasureUnit ?? "px";
+            if (unit == "px" || PixelSize <= 0 || PixelSize == 1.0)
+                return $"{pixelDistance:F2} px";
+            double physical = pixelDistance * PixelSize;
+            return $"{physical:F4} {unit}";
+        }
+
+        #endregion Measurement Config
+
+        #region Crosshair
+
+        public static readonly DependencyProperty ShowCrosshairProperty =
+            DependencyProperty.Register(nameof(ShowCrosshair), typeof(bool), typeof(PolygonRoiCanvas),
+                new PropertyMetadata(false, OnShowCrosshairChanged));
+
+        public bool ShowCrosshair
+        {
+            get => (bool)GetValue(ShowCrosshairProperty);
+            set => SetValue(ShowCrosshairProperty, value);
+        }
+
+        private Line _crosshairH, _crosshairV;
+
+        private static void OnShowCrosshairChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            var c = (PolygonRoiCanvas)d;
+            if ((bool)e.NewValue)
+                c.AddCrosshair();
+            else
+                c.RemoveCrosshair();
+        }
+
+        private void AddCrosshair()
+        {
+            RemoveCrosshair();
+            double w = CanvasWidth, h = CanvasHeight;
+            if (w <= 0 || h <= 0) return;
+
+            _crosshairH = new Line { X1 = 0, Y1 = h / 2, X2 = w, Y2 = h / 2, Stroke = Brushes.Red, StrokeThickness = 1, Opacity = 0.7, IsHitTestVisible = false };
+            _crosshairV = new Line { X1 = w / 2, Y1 = 0, X2 = w / 2, Y2 = h, Stroke = Brushes.Red, StrokeThickness = 1, Opacity = 0.7, IsHitTestVisible = false };
+            mainCanvas.Children.Add(_crosshairH);
+            mainCanvas.Children.Add(_crosshairV);
+        }
+
+        private void RemoveCrosshair()
+        {
+            if (_crosshairH != null) { mainCanvas.Children.Remove(_crosshairH); _crosshairH = null; }
+            if (_crosshairV != null) { mainCanvas.Children.Remove(_crosshairV); _crosshairV = null; }
+        }
+
+        #endregion Crosshair
+
+        #region Measurement
+
+        public static readonly DependencyProperty CurrentMeasureModeProperty =
+            DependencyProperty.Register(nameof(CurrentMeasureMode), typeof(Models.MeasureMode), typeof(PolygonRoiCanvas),
+                new PropertyMetadata(Models.MeasureMode.None, OnMeasureModeChanged));
+
+        public Models.MeasureMode CurrentMeasureMode
+        {
+            get => (Models.MeasureMode)GetValue(CurrentMeasureModeProperty);
+            set => SetValue(CurrentMeasureModeProperty, value);
+        }
+
+        // 保留 IsMeasuring 作为便捷属性
+        public bool IsMeasuring => CurrentMeasureMode != Models.MeasureMode.None;
+
+        private Canvas _measureOverlay;
+        private readonly System.Collections.Generic.List<Models.MeasureGroup> _ppGroups = new();
+        private readonly System.Collections.Generic.List<Models.PointToLineGroup> _ptlGroups = new();
+
+        // 点点距临时状态
+        private Ellipse _pendingDot;
+        private Point? _pendingPoint;
+
+        // 点线距临时状态
+        private int _ptlClickCount;
+        private Ellipse _ptlTempDot1, _ptlTempDot2;
+        private Line _ptlTempLine;
+        private Point? _ptlTempL1, _ptlTempL2;
+
+        // 拖拽状态
+        private Ellipse _mDraggingDot;
+        private object _mDraggingOwner; // MeasureGroup 或 PointToLineGroup
+        private string _mDraggingRole;  // "Dot1","Dot2","DotL1","DotL2","DotP"
+
+        private static void OnMeasureModeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            var c = (PolygonRoiCanvas)d;
+            var newMode = (Models.MeasureMode)e.NewValue;
+            if (newMode != Models.MeasureMode.None)
+            {
+                c.EnsureMeasureOverlay();
+            }
+            else
+            {
+                // 退出测量模式：清除未完成的临时元素
+                c.ClearPendingElements();
+            }
+        }
+
+        private void ClearPendingElements()
+        {
+            if (_measureOverlay == null) return;
+            if (_pendingDot != null) { _measureOverlay.Children.Remove(_pendingDot); _pendingDot = null; }
+            _pendingPoint = null;
+            if (_ptlTempDot1 != null) { _measureOverlay.Children.Remove(_ptlTempDot1); _ptlTempDot1 = null; }
+            if (_ptlTempDot2 != null) { _measureOverlay.Children.Remove(_ptlTempDot2); _ptlTempDot2 = null; }
+            if (_ptlTempLine != null) { _measureOverlay.Children.Remove(_ptlTempLine); _ptlTempLine = null; }
+            _ptlTempL1 = _ptlTempL2 = null;
+            _ptlClickCount = 0;
+        }
+
+        private void EnsureMeasureOverlay()
+        {
+            if (_measureOverlay != null) return;
+            _measureOverlay = new Canvas { IsHitTestVisible = true, Background = Brushes.Transparent };
+            _measureOverlay.SetBinding(Canvas.WidthProperty, new System.Windows.Data.Binding("CanvasWidth") { Source = this });
+            _measureOverlay.SetBinding(Canvas.HeightProperty, new System.Windows.Data.Binding("CanvasHeight") { Source = this });
+            mainCanvas.Children.Add(_measureOverlay);
+        }
+
+        private void RemoveMeasureOverlay()
+        {
+            if (_measureOverlay != null) { mainCanvas.Children.Remove(_measureOverlay); _measureOverlay = null; }
+            _ppGroups.Clear();
+            _ptlGroups.Clear();
+            _pendingDot = null; _pendingPoint = null;
+            _ptlTempDot1 = _ptlTempDot2 = null; _ptlTempLine = null;
+            _ptlTempL1 = _ptlTempL2 = null; _ptlClickCount = 0;
+            _mDraggingDot = null; _mDraggingOwner = null;
+        }
+
+        public void ClearMeasurements() => RemoveMeasureOverlay();
+        public int MeasureCount => _ppGroups.Count + _ptlGroups.Count;
+
+        // ── 点击分发 ──
+
+        private void HandleMeasureClick(Point pos)
+        {
+            if (_measureOverlay == null) EnsureMeasureOverlay();
+            if (_measureOverlay == null) return;
+
+            if (CurrentMeasureMode == Models.MeasureMode.PointDistance)
+                HandlePointDistanceClick(pos);
+            else if (CurrentMeasureMode == Models.MeasureMode.PointToLine)
+                HandlePointToLineClick(pos);
+        }
+
+        // ── 点点距 ──
+
+        private void HandlePointDistanceClick(Point pos)
+        {
+            if (!_pendingPoint.HasValue)
+            {
+                _pendingPoint = pos;
+                _pendingDot = CreateMDot(Brushes.Red);
+                _measureOverlay.Children.Add(_pendingDot);
+                SetDotPos(_pendingDot, pos);
+                RaiseMeasureStatusChanged($"点点距 - 第一点: ({pos.X:F0}, {pos.Y:F0})，请点击第二个点");
+            }
+            else
+            {
+                var g = CreatePPGroup(_pendingPoint.Value, pos);
+                _ppGroups.Add(g);
+                _measureOverlay.Children.Remove(_pendingDot);
+                _pendingDot = null; _pendingPoint = null;
+                RaiseMeasureCompleted(g.P1, g.P2, g.Distance, MeasureCount, "PointDistance");
+                CurrentMeasureMode = Models.MeasureMode.None;
+            }
+        }
+
+        private Models.MeasureGroup CreatePPGroup(Point p1, Point p2)
+        {
+            var g = new Models.MeasureGroup { P1 = p1, P2 = p2 };
+            g.Line = new Line { Stroke = Brushes.Lime, StrokeThickness = 2, IsHitTestVisible = false };
+            g.Label = new TextBlock { Foreground = Brushes.Yellow, FontSize = 13, FontWeight = FontWeights.Bold, IsHitTestVisible = false };
+            g.Dot1 = CreateMDot(Brushes.Red);
+            g.Dot2 = CreateMDot(Brushes.Blue);
+            foreach (UIElement el in new UIElement[] { g.Line, g.Label, g.Dot1, g.Dot2 })
+                _measureOverlay.Children.Add(el);
+            SetDotPos(g.Dot1, p1); SetDotPos(g.Dot2, p2);
+            g.UpdateLine(); g.UpdateLabel(FormatDistance(g.Distance));
+            return g;
+        }
+
+        // ── 点线距 ──
+
+        private void HandlePointToLineClick(Point pos)
+        {
+            _ptlClickCount++;
+
+            if (_ptlClickCount == 1)
+            {
+                _ptlTempL1 = pos;
+                _ptlTempDot1 = CreateMDot(Brushes.Lime);
+                _measureOverlay.Children.Add(_ptlTempDot1);
+                SetDotPos(_ptlTempDot1, pos);
+                RaiseMeasureStatusChanged($"点线距 - 直线端点1: ({pos.X:F0}, {pos.Y:F0})，请点击直线端点2");
+            }
+            else if (_ptlClickCount == 2)
+            {
+                _ptlTempL2 = pos;
+                _ptlTempDot2 = CreateMDot(Brushes.Lime);
+                _measureOverlay.Children.Add(_ptlTempDot2);
+                SetDotPos(_ptlTempDot2, pos);
+                _ptlTempLine = new Line { Stroke = Brushes.Lime, StrokeThickness = 2, IsHitTestVisible = false,
+                    X1 = _ptlTempL1.Value.X, Y1 = _ptlTempL1.Value.Y, X2 = pos.X, Y2 = pos.Y };
+                _measureOverlay.Children.Add(_ptlTempLine);
+                RaiseMeasureStatusChanged($"点线距 - 直线已定义，请点击测量点");
+            }
+            else if (_ptlClickCount == 3)
+            {
+                // 完成：创建正式组，移除临时元素
+                var g = CreatePTLGroup(_ptlTempL1.Value, _ptlTempL2.Value, pos);
+                _ptlGroups.Add(g);
+
+                if (_ptlTempDot1 != null) _measureOverlay.Children.Remove(_ptlTempDot1);
+                if (_ptlTempDot2 != null) _measureOverlay.Children.Remove(_ptlTempDot2);
+                if (_ptlTempLine != null) _measureOverlay.Children.Remove(_ptlTempLine);
+                _ptlTempDot1 = _ptlTempDot2 = null; _ptlTempLine = null;
+                _ptlTempL1 = _ptlTempL2 = null; _ptlClickCount = 0;
+
+                var foot = g.FootPoint;
+                RaiseMeasureCompleted(g.P, foot, g.Distance, MeasureCount, "PointToLine");
+                CurrentMeasureMode = Models.MeasureMode.None;
+            }
+        }
+
+        private Models.PointToLineGroup CreatePTLGroup(Point l1, Point l2, Point p)
+        {
+            var g = new Models.PointToLineGroup { L1 = l1, L2 = l2, P = p };
+            g.MainLine = new Line { Stroke = Brushes.Lime, StrokeThickness = 2, IsHitTestVisible = false };
+            g.ExtLine = new Line { Stroke = Brushes.Lime, StrokeThickness = 1, IsHitTestVisible = false,
+                StrokeDashArray = new DoubleCollection { 4, 2 }, Visibility = Visibility.Collapsed };
+            g.PerpLine = new Line { Stroke = Brushes.Yellow, StrokeThickness = 1, IsHitTestVisible = false,
+                StrokeDashArray = new DoubleCollection { 4, 2 } };
+            g.FootDot = new Ellipse { Width = 8, Height = 8, Fill = Brushes.Cyan, Stroke = Brushes.White, StrokeThickness = 1, IsHitTestVisible = false };
+            g.Label = new TextBlock { Foreground = Brushes.Yellow, FontSize = 13, FontWeight = FontWeights.Bold, IsHitTestVisible = false };
+            g.DotL1 = CreateMDot(Brushes.Lime);
+            g.DotL2 = CreateMDot(Brushes.Lime);
+            g.DotP = CreateMDot(Brushes.Red);
+            foreach (UIElement el in new UIElement[] { g.MainLine, g.ExtLine, g.PerpLine, g.FootDot, g.Label, g.DotL1, g.DotL2, g.DotP })
+                _measureOverlay.Children.Add(el);
+            SetDotPos(g.DotL1, l1); SetDotPos(g.DotL2, l2); SetDotPos(g.DotP, p);
+            g.UpdateVisuals(FormatDistance(g.Distance));
+            return g;
+        }
+
+        // ── 共用：圆点创建、定位、拖拽、删除 ──
+
+        private Ellipse CreateMDot(Brush fill)
+        {
+            var dot = new Ellipse { Width = 12, Height = 12, Fill = fill, Stroke = Brushes.White, StrokeThickness = 1.5, Cursor = Cursors.Hand };
+            dot.SetValue(ContextMenuService.IsEnabledProperty, false);
+            dot.MouseLeftButtonDown += MDot_Down;
+            dot.MouseMove += MDot_Move;
+            dot.MouseLeftButtonUp += MDot_Up;
+            dot.PreviewMouseRightButtonUp += MDot_RightClick;
+            return dot;
+        }
+
+        private static void SetDotPos(Ellipse dot, Point pos)
+        {
+            Canvas.SetLeft(dot, pos.X - dot.Width / 2);
+            Canvas.SetTop(dot, pos.Y - dot.Height / 2);
+        }
+
+        private void MDot_Down(object sender, MouseButtonEventArgs e)
+        {
+            if (sender is not Ellipse dot) return;
+            // 查找点点距组
+            foreach (var g in _ppGroups)
+            {
+                if (g.Dot1 == dot) { _mDraggingOwner = g; _mDraggingRole = "Dot1"; break; }
+                if (g.Dot2 == dot) { _mDraggingOwner = g; _mDraggingRole = "Dot2"; break; }
+            }
+            // 查找点线距组
+            if (_mDraggingOwner == null)
+            {
+                foreach (var g in _ptlGroups)
+                {
+                    if (g.DotL1 == dot) { _mDraggingOwner = g; _mDraggingRole = "DotL1"; break; }
+                    if (g.DotL2 == dot) { _mDraggingOwner = g; _mDraggingRole = "DotL2"; break; }
+                    if (g.DotP == dot) { _mDraggingOwner = g; _mDraggingRole = "DotP"; break; }
+                }
+            }
+            if (_mDraggingOwner != null) { _mDraggingDot = dot; dot.CaptureMouse(); e.Handled = true; }
+        }
+
+        private void MDot_Move(object sender, MouseEventArgs e)
+        {
+            if (_mDraggingDot == null || _mDraggingOwner == null || _measureOverlay == null) return;
+            if (e.LeftButton != MouseButtonState.Pressed) return;
+            var pos = e.GetPosition(_measureOverlay);
+            SetDotPos(_mDraggingDot, pos);
+
+            if (_mDraggingOwner is Models.MeasureGroup ppg)
+            {
+                if (_mDraggingRole == "Dot1") ppg.P1 = pos; else ppg.P2 = pos;
+                ppg.UpdateLine(); ppg.UpdateLabel(FormatDistance(ppg.Distance));
+                RaiseMeasureCompleted(ppg.P1, ppg.P2, ppg.Distance, MeasureCount, "PointDistance");
+            }
+            else if (_mDraggingOwner is Models.PointToLineGroup ptlg)
+            {
+                if (_mDraggingRole == "DotL1") ptlg.L1 = pos;
+                else if (_mDraggingRole == "DotL2") ptlg.L2 = pos;
+                else if (_mDraggingRole == "DotP") ptlg.P = pos;
+                ptlg.UpdateVisuals(FormatDistance(ptlg.Distance));
+                var foot = ptlg.FootPoint;
+                RaiseMeasureCompleted(ptlg.P, foot, ptlg.Distance, MeasureCount, "PointToLine");
+            }
+            e.Handled = true;
+        }
+
+        private void MDot_Up(object sender, MouseButtonEventArgs e)
+        {
+            if (_mDraggingDot != null) { _mDraggingDot.ReleaseMouseCapture(); _mDraggingDot = null; _mDraggingOwner = null; e.Handled = true; }
+        }
+
+        private void MDot_RightClick(object sender, MouseButtonEventArgs e)
+        {
+            if (sender is not Ellipse dot || _measureOverlay == null) return;
+
+            // 点点距删除
+            foreach (var g in _ppGroups)
+            {
+                if (g.Dot1 == dot || g.Dot2 == dot)
+                {
+                    foreach (var el in new UIElement[] { g.Dot1, g.Dot2, g.Line, g.Label })
+                        _measureOverlay.Children.Remove(el);
+                    _ppGroups.Remove(g);
+                    RaiseMeasureStatusChanged($"已删除测量 | 剩余 {MeasureCount} 条");
+                    e.Handled = true; return;
+                }
+            }
+            // 点线距删除
+            foreach (var g in _ptlGroups)
+            {
+                if (g.DotL1 == dot || g.DotL2 == dot || g.DotP == dot)
+                {
+                    foreach (var el in new UIElement[] { g.DotL1, g.DotL2, g.DotP, g.MainLine, g.ExtLine, g.PerpLine, g.FootDot, g.Label })
+                        _measureOverlay.Children.Remove(el);
+                    _ptlGroups.Remove(g);
+                    RaiseMeasureStatusChanged($"已删除测量 | 剩余 {MeasureCount} 条");
+                    e.Handled = true; return;
+                }
+            }
+        }
+
+        // ── 事件 ──
+
+        public static readonly RoutedEvent MeasureCompletedEvent =
+            EventManager.RegisterRoutedEvent(nameof(MeasureCompleted), RoutingStrategy.Bubble,
+                typeof(RoutedEventHandler), typeof(PolygonRoiCanvas));
+
+        public event RoutedEventHandler MeasureCompleted
+        {
+            add { AddHandler(MeasureCompletedEvent, value); }
+            remove { RemoveHandler(MeasureCompletedEvent, value); }
+        }
+
+        private void RaiseMeasureCompleted(Point p1, Point p2, double distance, int totalCount, string measureType)
+        {
+            RaiseEvent(new MeasureCompletedEventArgs(MeasureCompletedEvent, p1, p2, distance, totalCount) { MeasureType = measureType });
+        }
+
+        public static readonly RoutedEvent MeasureStatusChangedEvent =
+            EventManager.RegisterRoutedEvent(nameof(MeasureStatusChanged), RoutingStrategy.Bubble,
+                typeof(RoutedEventHandler), typeof(PolygonRoiCanvas));
+
+        public event RoutedEventHandler MeasureStatusChanged
+        {
+            add { AddHandler(MeasureStatusChangedEvent, value); }
+            remove { RemoveHandler(MeasureStatusChangedEvent, value); }
+        }
+
+        private void RaiseMeasureStatusChanged(string message)
+        {
+            RaiseEvent(new MeasureStatusEventArgs(MeasureStatusChangedEvent, message));
+        }
+
+        #endregion Measurement
+
         #region Adorner Management
 
         private void UpdateAdorner()
@@ -334,39 +758,15 @@ namespace XP.ImageProcessing.RoiControl.Controls
 
         private void Canvas_MouseWheel(object sender, MouseWheelEventArgs e)
         {
-            // 获取鼠标在 imageDisplayGrid 中的位置
-            Point mousePos = e.GetPosition(imageDisplayGrid);
-
-            // 获取鼠标在 Canvas 中的位置（缩放前）
-            Point mousePosOnCanvas = e.GetPosition(mainCanvas);
-
             double oldZoom = ZoomScale;
-            double newZoom = oldZoom;
-
-            if (e.Delta > 0)
-            {
-                newZoom = oldZoom * ZoomStep;
-            }
-            else
-            {
-                newZoom = oldZoom / ZoomStep;
-            }
-
-            // 限制缩放范围
+            double newZoom = e.Delta > 0 ? oldZoom * ZoomStep : oldZoom / ZoomStep;
             newZoom = Math.Max(0.1, Math.Min(10.0, newZoom));
 
             if (Math.Abs(newZoom - oldZoom) > 0.001)
             {
-                // 计算缩放比例变化
-                double scale = newZoom / oldZoom;
-
-                // 更新缩放
                 ZoomScale = newZoom;
-
-                // 调整平移偏移，使鼠标位置保持不变
-                // 新的偏移 = 旧偏移 + 鼠标位置 - 鼠标位置 * 缩放比例
-                PanOffsetX = mousePos.X - (mousePos.X - PanOffsetX) * scale;
-                PanOffsetY = mousePos.Y - (mousePos.Y - PanOffsetY) * scale;
+                // RenderTransformOrigin="0.5,0.5" 保证以图像中心等比缩放
+                // 拖拽平移偏移保持不变
             }
 
             e.Handled = true;
@@ -402,8 +802,9 @@ namespace XP.ImageProcessing.RoiControl.Controls
 
             if (!isDragging)
             {
-                // 处理点击事件
                 Point clickPosition = e.GetPosition(mainCanvas);
+                if (IsMeasuring)
+                    HandleMeasureClick(clickPosition);
                 OnCanvasClicked(clickPosition);
             }
 
@@ -414,7 +815,7 @@ namespace XP.ImageProcessing.RoiControl.Controls
         {
             // 右键点击完成多边形
             OnRightClick();
-            e.Handled = true;
+            // 不设 e.Handled，让 ContextMenu 正常弹出
         }
 
         private void ROI_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
@@ -433,35 +834,33 @@ namespace XP.ImageProcessing.RoiControl.Controls
 
         public void ResetView()
         {
-            // 自动适应显示窗口 (类似 PictureBox SizeMode.Zoom)
-            ZoomScale = 1.0;
             PanOffsetX = 0;
             PanOffsetY = 0;
 
-            if (imageDisplayGrid != null && CanvasWidth > 0 && CanvasHeight > 0)
+            if (imageDisplayGrid == null || CanvasWidth <= 0 || CanvasHeight <= 0)
             {
-                // 使用 Dispatcher 延迟执行，确保布局已完成
-                Dispatcher.BeginInvoke(new Action(() =>
-                {
-                    // 获取图像显示区域的实际尺寸
-                    double viewportWidth = imageDisplayGrid.ActualWidth;
-                    double viewportHeight = imageDisplayGrid.ActualHeight;
-
-                    if (viewportWidth > 0 && viewportHeight > 0)
-                    {
-                        // 计算宽度和高度的缩放比例
-                        double scaleX = viewportWidth / CanvasWidth;
-                        double scaleY = viewportHeight / CanvasHeight;
-
-                        // 选择较小的缩放比例，确保图像完全显示在窗口内（保持宽高比）
-                        ZoomScale = Math.Min(scaleX, scaleY);
-
-                        // 居中显示由 Grid 的 HorizontalAlignment 和 VerticalAlignment 自动处理
-                        PanOffsetX = 0;
-                        PanOffsetY = 0;
-                    }
-                }), System.Windows.Threading.DispatcherPriority.Loaded);
+                ZoomScale = 1.0;
+                return;
             }
+
+            // 延迟到布局完成后计算，确保 ActualWidth/Height 准确
+            Dispatcher.BeginInvoke(new Action(() =>
+            {
+                double viewW = imageDisplayGrid.ActualWidth;
+                double viewH = imageDisplayGrid.ActualHeight;
+
+                if (viewW > 0 && viewH > 0)
+                {
+                    ZoomScale = Math.Min(viewW / CanvasWidth, viewH / CanvasHeight);
+                }
+                else
+                {
+                    ZoomScale = 1.0;
+                }
+
+                PanOffsetX = 0;
+                PanOffsetY = 0;
+            }), System.Windows.Threading.DispatcherPriority.Render);
         }
 
         private void BtnZoomIn_Click(object sender, RoutedEventArgs e)
@@ -470,6 +869,8 @@ namespace XP.ImageProcessing.RoiControl.Controls
             if (newZoom <= 10.0)
             {
                 ZoomScale = newZoom;
+                PanOffsetX = 0;
+                PanOffsetY = 0;
             }
         }
 
@@ -479,6 +880,8 @@ namespace XP.ImageProcessing.RoiControl.Controls
             if (newZoom >= 0.1)
             {
                 ZoomScale = newZoom;
+                PanOffsetX = 0;
+                PanOffsetY = 0;
             }
         }
 
diff --git a/XP.ImageProcessing.RoiControl/Models/MeasureGroup.cs b/XP.ImageProcessing.RoiControl/Models/MeasureGroup.cs
new file mode 100644
index 0000000..2e5670d
--- /dev/null
+++ b/XP.ImageProcessing.RoiControl/Models/MeasureGroup.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Shapes;
+
+namespace XP.ImageProcessing.RoiControl.Models
+{
+    /// <summary>一次点点距测量的所有视觉元素</summary>
+    public class MeasureGroup
+    {
+        public Ellipse Dot1 { get; set; }
+        public Ellipse Dot2 { get; set; }
+        public Line Line { get; set; }
+        public TextBlock Label { get; set; }
+        public Point P1 { get; set; }
+        public Point P2 { get; set; }
+
+        public double Distance
+        {
+            get
+            {
+                double dx = P2.X - P1.X, dy = P2.Y - P1.Y;
+                return Math.Sqrt(dx * dx + dy * dy);
+            }
+        }
+
+        public void UpdateLine()
+        {
+            Line.X1 = P1.X; Line.Y1 = P1.Y;
+            Line.X2 = P2.X; Line.Y2 = P2.Y;
+            Line.Visibility = Visibility.Visible;
+        }
+
+        public void UpdateLabel(string distanceText = null)
+        {
+            Label.Text = distanceText ?? $"{Distance:F2} px";
+            Canvas.SetLeft(Label, (P1.X + P2.X) / 2 + 8);
+            Canvas.SetTop(Label, (P1.Y + P2.Y) / 2 - 18);
+            Label.Visibility = Visibility.Visible;
+        }
+    }
+}
diff --git a/XP.ImageProcessing.RoiControl/Models/MeasureMode.cs b/XP.ImageProcessing.RoiControl/Models/MeasureMode.cs
new file mode 100644
index 0000000..c21bce4
--- /dev/null
+++ b/XP.ImageProcessing.RoiControl/Models/MeasureMode.cs
@@ -0,0 +1,9 @@
+namespace XP.ImageProcessing.RoiControl.Models
+{
+    public enum MeasureMode
+    {
+        None,
+        PointDistance,
+        PointToLine
+    }
+}
diff --git a/XP.ImageProcessing.RoiControl/Models/PointToLineGroup.cs b/XP.ImageProcessing.RoiControl/Models/PointToLineGroup.cs
new file mode 100644
index 0000000..29163e4
--- /dev/null
+++ b/XP.ImageProcessing.RoiControl/Models/PointToLineGroup.cs
@@ -0,0 +1,96 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Shapes;
+
+namespace XP.ImageProcessing.RoiControl.Models
+{
+    /// <summary>一次点线距测量的所有视觉元素（直线两端点 + 测量点 + 垂线 + 标签）</summary>
+    public class PointToLineGroup
+    {
+        public Ellipse DotL1 { get; set; }  // 直线端点1
+        public Ellipse DotL2 { get; set; }  // 直线端点2
+        public Ellipse DotP { get; set; }   // 测量点
+        public Line MainLine { get; set; }  // 原始线段（实线）
+        public Line ExtLine { get; set; }   // 延长线（虚线）
+        public Line PerpLine { get; set; }  // 垂线（测量点→垂足）
+        public Ellipse FootDot { get; set; } // 垂足
+        public TextBlock Label { get; set; }
+        public Point L1 { get; set; }
+        public Point L2 { get; set; }
+        public Point P { get; set; }
+
+        public double Distance
+        {
+            get
+            {
+                double abx = L2.X - L1.X, aby = L2.Y - L1.Y;
+                double abLen = Math.Sqrt(abx * abx + aby * aby);
+                if (abLen < 0.001) return 0;
+                return Math.Abs(abx * (L1.Y - P.Y) - aby * (L1.X - P.X)) / abLen;
+            }
+        }
+
+        public Point FootPoint
+        {
+            get
+            {
+                double abx = L2.X - L1.X, aby = L2.Y - L1.Y;
+                double abLen2 = abx * abx + aby * aby;
+                if (abLen2 < 0.001) return L1;
+                double t = ((P.X - L1.X) * abx + (P.Y - L1.Y) * aby) / abLen2;
+                return new Point(L1.X + t * abx, L1.Y + t * aby);
+            }
+        }
+
+        public void UpdateVisuals(string distanceText)
+        {
+            double abx = L2.X - L1.X, aby = L2.Y - L1.Y;
+            double abLen2 = abx * abx + aby * aby;
+            double t = abLen2 < 0.001 ? 0 : ((P.X - L1.X) * abx + (P.Y - L1.Y) * aby) / abLen2;
+            var foot = FootPoint;
+
+            // 主直线：始终画原始线段
+            MainLine.X1 = L1.X; MainLine.Y1 = L1.Y;
+            MainLine.X2 = L2.X; MainLine.Y2 = L2.Y;
+            MainLine.Visibility = Visibility.Visible;
+
+            // 延长线：垂足在线段外时画虚线延伸
+            if (t < 0)
+            {
+                ExtLine.X1 = foot.X; ExtLine.Y1 = foot.Y;
+                ExtLine.X2 = L1.X; ExtLine.Y2 = L1.Y;
+                ExtLine.Visibility = Visibility.Visible;
+            }
+            else if (t > 1)
+            {
+                ExtLine.X1 = L2.X; ExtLine.Y1 = L2.Y;
+                ExtLine.X2 = foot.X; ExtLine.Y2 = foot.Y;
+                ExtLine.Visibility = Visibility.Visible;
+            }
+            else
+            {
+                ExtLine.Visibility = Visibility.Collapsed;
+            }
+
+            // 垂线
+            PerpLine.X1 = P.X; PerpLine.Y1 = P.Y;
+            PerpLine.X2 = foot.X; PerpLine.Y2 = foot.Y;
+            PerpLine.Visibility = Visibility.Visible;
+
+            // 垂足
+            Canvas.SetLeft(FootDot, foot.X - FootDot.Width / 2);
+            Canvas.SetTop(FootDot, foot.Y - FootDot.Height / 2);
+            FootDot.Visibility = Visibility.Visible;
+
+            // 标签
+            Label.Text = distanceText ?? $"{Distance:F2} px";
+            Canvas.SetLeft(Label, (P.X + foot.X) / 2 + 8);
+            Canvas.SetTop(Label, (P.Y + foot.Y) / 2 - 18);
+            Label.Visibility = Visibility.Visible;
+        }
+
+        public void UpdateVisuals() => UpdateVisuals(null);
+    }
+}
diff --git a/XplorePlane/App.xaml.cs b/XplorePlane/App.xaml.cs
index bd10aa4..26cb81b 100644
--- a/XplorePlane/App.xaml.cs
+++ b/XplorePlane/App.xaml.cs
@@ -265,23 +265,23 @@ namespace XplorePlane
             // 主窗口加载完成后再连接相机，确保所有模块和原生 DLL 已完成初始化
             shell.Loaded += (s, e) =>
             {
-                TryConnectCamera();
+                //TryConnectCamera();
 
-                // 通知 ViewModel 相机状态已确定，启动实时预览或显示错误
-                try
-                {
-                    var cameraVm = Container.Resolve<NavigationPropertyPanelViewModel>();
-                    cameraVm.OnCameraReady();
-                }
-                catch (Exception ex)
-                {
-                    Log.Error(ex, "通知相机 ViewModel 失败");
-                }
+                //// 通知 ViewModel 相机状态已确定，启动实时预览或显示错误
+               // try
+               // {
+               //     var cameraVm = Container.Resolve<NavigationPropertyPanelViewModel>();
+               //     cameraVm.OnCameraReady();
+               // }
+               // catch (Exception ex)
+               // {
+               //     Log.Error(ex, "通知相机 ViewModel 失败");
+               // }
 
-                if (_cameraError != null)
-                {
-                    HexMessageBox.Show(_cameraError, MessageBoxButton.OK, MessageBoxImage.Error);
-                }
+               // if (_cameraError != null)
+               // {
+               //     HexMessageBox.Show(_cameraError, MessageBoxButton.OK, MessageBoxImage.Error);
+                //}
             };
 
             return shell;
diff --git a/XplorePlane/Events/MeasurementToolEvent.cs b/XplorePlane/Events/MeasurementToolEvent.cs
new file mode 100644
index 0000000..7d8b129
--- /dev/null
+++ b/XplorePlane/Events/MeasurementToolEvent.cs
@@ -0,0 +1,26 @@
+using Prism.Events;
+
+namespace XplorePlane.Events
+{
+    /// <summary>
+    /// 测量工具模式
+    /// </summary>
+    public enum MeasurementToolMode
+    {
+        None,
+        PointDistance,
+        PointLineDistance,
+        Angle,
+        ThroughHoleFillRate
+    }
+
+    /// <summary>
+    /// 测量工具激活事件，由 MainViewModel 发布，ViewportPanelViewModel 订阅
+    /// </summary>
+    public class MeasurementToolEvent : PubSubEvent<MeasurementToolMode> { }
+
+    /// <summary>
+    /// 十字辅助线切换事件
+    /// </summary>
+    public class ToggleCrosshairEvent : PubSubEvent { }
+}
diff --git a/XplorePlane/ViewModels/Main/MainViewModel.cs b/XplorePlane/ViewModels/Main/MainViewModel.cs
index fdd75c9..0b3087c 100644
--- a/XplorePlane/ViewModels/Main/MainViewModel.cs
+++ b/XplorePlane/ViewModels/Main/MainViewModel.cs
@@ -75,6 +75,15 @@ namespace XplorePlane.ViewModels
         public DelegateCommand OpenRaySourceConfigCommand { get; }
         public DelegateCommand WarmUpCommand { get; }
 
+        // 测量命令
+        public DelegateCommand PointDistanceMeasureCommand { get; }
+        public DelegateCommand PointLineDistanceMeasureCommand { get; }
+        public DelegateCommand AngleMeasureCommand { get; }
+        public DelegateCommand ThroughHoleFillRateMeasureCommand { get; }
+
+        // 辅助线命令
+        public DelegateCommand ToggleCrosshairCommand { get; }
+
         // 设置命令
         public DelegateCommand OpenLanguageSwitcherCommand { get; }
         public DelegateCommand OpenRealTimeLogViewerCommand { get; }
@@ -152,6 +161,16 @@ namespace XplorePlane.ViewModels
             InsertPauseDialogCommand = new DelegateCommand(() => ExecuteCncEditorAction(vm => vm.InsertPauseDialogCommand.Execute()));
             InsertWaitDelayCommand = new DelegateCommand(() => ExecuteCncEditorAction(vm => vm.InsertWaitDelayCommand.Execute()));
 
+            // 测量命令
+            PointDistanceMeasureCommand = new DelegateCommand(ExecutePointDistanceMeasure);
+            PointLineDistanceMeasureCommand = new DelegateCommand(ExecutePointLineDistanceMeasure);
+            AngleMeasureCommand = new DelegateCommand(ExecuteAngleMeasure);
+            ThroughHoleFillRateMeasureCommand = new DelegateCommand(ExecuteThroughHoleFillRateMeasure);
+
+            // 辅助线命令
+            ToggleCrosshairCommand = new DelegateCommand(() =>
+                _eventAggregator.GetEvent<ToggleCrosshairEvent>().Publish());
+
             // 硬件命令
             AxisResetCommand = new DelegateCommand(ExecuteAxisReset);
             OpenDetectorConfigCommand = new DelegateCommand(ExecuteOpenDetectorConfig);
@@ -419,6 +438,34 @@ namespace XplorePlane.ViewModels
 
         #endregion
 
+        #region 测量命令实现
+
+        private void ExecutePointDistanceMeasure()
+        {
+            _logger.Info("点点距测量功能已触发");
+            _eventAggregator.GetEvent<MeasurementToolEvent>().Publish(MeasurementToolMode.PointDistance);
+        }
+
+        private void ExecutePointLineDistanceMeasure()
+        {
+            _logger.Info("点线距测量功能已触发");
+            _eventAggregator.GetEvent<MeasurementToolEvent>().Publish(MeasurementToolMode.PointLineDistance);
+        }
+
+        private void ExecuteAngleMeasure()
+        {
+            _logger.Info("角度测量功能已触发");
+            // TODO: 实现角度测量逻辑
+        }
+
+        private void ExecuteThroughHoleFillRateMeasure()
+        {
+            _logger.Info("通孔填锡率测量功能已触发");
+            // TODO: 实现通孔填锡率测量逻辑
+        }
+
+        #endregion
+
         #region 设置命令实现
 
         private void ExecuteOpenLanguageSwitcher()
diff --git a/XplorePlane/ViewModels/Main/ViewportPanelViewModel.cs b/XplorePlane/ViewModels/Main/ViewportPanelViewModel.cs
index 599b638..6d022b8 100644
--- a/XplorePlane/ViewModels/Main/ViewportPanelViewModel.cs
+++ b/XplorePlane/ViewModels/Main/ViewportPanelViewModel.cs
@@ -1,3 +1,4 @@
+using Prism.Commands;
 using Prism.Events;
 using Prism.Mvvm;
 using System;
@@ -18,6 +19,7 @@ namespace XplorePlane.ViewModels
     public class ViewportPanelViewModel : BindableBase
     {
         private readonly ILoggerService _logger;
+        private readonly IEventAggregator _eventAggregator;
         private int _isProcessingFrame;
 
         private ImageSource _imageSource;
@@ -34,9 +36,116 @@ namespace XplorePlane.ViewModels
             set => SetProperty(ref _imageInfo, value);
         }
 
+        #region 测量工具状态
+
+        private MeasurementToolMode _currentMeasurementMode = MeasurementToolMode.None;
+        public MeasurementToolMode CurrentMeasurementMode
+        {
+            get => _currentMeasurementMode;
+            set
+            {
+                if (SetProperty(ref _currentMeasurementMode, value))
+                {
+                    RaisePropertyChanged(nameof(IsMeasuring));
+                    RaisePropertyChanged(nameof(MeasurementModeText));
+                    // 切换模式时重置状态
+                    ResetMeasurementState();
+                }
+            }
+        }
+
+        public bool IsMeasuring => CurrentMeasurementMode != MeasurementToolMode.None;
+
+        public string MeasurementModeText => CurrentMeasurementMode switch
+        {
+            MeasurementToolMode.PointDistance => "点点距测量 - 请在图像上点击第一个点",
+            _ => string.Empty
+        };
+
+        // 测量点坐标（图像像素坐标）
+        private Point? _measurePoint1;
+        public Point? MeasurePoint1
+        {
+            get => _measurePoint1;
+            set => SetProperty(ref _measurePoint1, value);
+        }
+
+        private Point? _measurePoint2;
+        public Point? MeasurePoint2
+        {
+            get => _measurePoint2;
+            set => SetProperty(ref _measurePoint2, value);
+        }
+
+        private string _measurementResult;
+        public string MeasurementResult
+        {
+            get => _measurementResult;
+            set => SetProperty(ref _measurementResult, value);
+        }
+
+        /// <summary>
+        /// 由 View 层调用：用户在画布上点击了一个点（像素坐标）
+        /// </summary>
+        public void OnMeasurementPointClicked(Point imagePoint)
+        {
+            if (CurrentMeasurementMode == MeasurementToolMode.PointDistance)
+            {
+                if (MeasurePoint1 == null)
+                {
+                    MeasurePoint1 = imagePoint;
+                    ImageInfo = $"点点距测量 - 第一点: ({imagePoint.X:F0}, {imagePoint.Y:F0})，请点击第二个点";
+                    _logger?.Info("测量第一点: ({X}, {Y})", imagePoint.X, imagePoint.Y);
+                }
+                else
+                {
+                    MeasurePoint2 = imagePoint;
+                    CalculatePointDistance();
+                }
+            }
+        }
+
+        private void CalculatePointDistance()
+        {
+            if (MeasurePoint1 == null || MeasurePoint2 == null) return;
+
+            var p1 = MeasurePoint1.Value;
+            var p2 = MeasurePoint2.Value;
+            double dx = p2.X - p1.X;
+            double dy = p2.Y - p1.Y;
+            double distance = Math.Sqrt(dx * dx + dy * dy);
+            double angle = Math.Atan2(dy, dx) * 180.0 / Math.PI;
+
+            MeasurementResult = $"{distance:F2} px";
+            ImageInfo = $"点点距: {distance:F2} px | 角度: {angle:F2}° | ({p1.X:F0},{p1.Y:F0}) → ({p2.X:F0},{p2.Y:F0})";
+            _logger?.Info("点点距测量完成: {Distance:F2} px, 角度: {Angle:F2}°", distance, angle);
+        }
+
+        /// <summary>
+        /// 取消/重置当前测量
+        /// </summary>
+        public DelegateCommand CancelMeasurementCommand { get; private set; }
+
+        public void ResetMeasurementState()
+        {
+            MeasurePoint1 = null;
+            MeasurePoint2 = null;
+            MeasurementResult = null;
+        }
+
+        #endregion
+
         public ViewportPanelViewModel(IEventAggregator eventAggregator, ILoggerService logger)
         {
             _logger = logger?.ForModule<ViewportPanelViewModel>();
+            _eventAggregator = eventAggregator;
+
+            CancelMeasurementCommand = new DelegateCommand(() =>
+            {
+                // 发布 None 事件，让 View 层也收到
+                _eventAggregator.GetEvent<MeasurementToolEvent>().Publish(MeasurementToolMode.None);
+                ImageInfo = "测量已取消";
+            });
 
             eventAggregator.GetEvent<ImageCapturedEvent>()
                 .Subscribe(OnImageCaptured, ThreadOption.BackgroundThread);
@@ -44,8 +153,39 @@ namespace XplorePlane.ViewModels
                 .Subscribe(OnManualImageLoaded, ThreadOption.UIThread);
             eventAggregator.GetEvent<PipelinePreviewUpdatedEvent>()
                 .Subscribe(OnPipelinePreviewUpdated, ThreadOption.UIThread);
+
+            // 订阅测量工具事件
+            eventAggregator.GetEvent<MeasurementToolEvent>()
+                .Subscribe(OnMeasurementToolActivated, ThreadOption.UIThread);
+
+            // 订阅十字辅助线切换事件
+            eventAggregator.GetEvent<ToggleCrosshairEvent>()
+                .Subscribe(OnToggleCrosshair, ThreadOption.UIThread);
         }
 
+        private void OnMeasurementToolActivated(MeasurementToolMode mode)
+        {
+            CurrentMeasurementMode = mode;
+            _logger?.Info("测量工具模式切换: {Mode}", mode);
+        }
+
+        #region 十字辅助线
+
+        private bool _showCrosshair;
+        public bool ShowCrosshair
+        {
+            get => _showCrosshair;
+            set => SetProperty(ref _showCrosshair, value);
+        }
+
+        private void OnToggleCrosshair()
+        {
+            ShowCrosshair = !ShowCrosshair;
+            _logger?.Info("十字辅助线: {State}", ShowCrosshair ? "显示" : "隐藏");
+        }
+
+        #endregion
+
         private void OnImageCaptured(ImageCapturedEventArgs args)
         {
             if (args?.ImageData == null || args.Width == 0 || args.Height == 0) return;
diff --git a/XplorePlane/Views/HalfValueConverter.cs b/XplorePlane/Views/HalfValueConverter.cs
new file mode 100644
index 0000000..226d40c
--- /dev/null
+++ b/XplorePlane/Views/HalfValueConverter.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace XplorePlane.Views
+{
+    /// <summary>返回输入值的一半，用于十字线居中定位</summary>
+    public class HalfValueConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+            => value is double d ? d / 2.0 : 0.0;
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+            => throw new NotSupportedException();
+    }
+}
diff --git a/XplorePlane/Views/Main/MainWindow.xaml b/XplorePlane/Views/Main/MainWindow.xaml
index 3a6da5b..42597af 100644
--- a/XplorePlane/Views/Main/MainWindow.xaml
+++ b/XplorePlane/Views/Main/MainWindow.xaml
@@ -146,6 +146,7 @@
                     <StackPanel>
                         <telerik:RadRibbonButton
                             telerik:ScreenTip.Title="中心十字线"
+                            Command="{Binding ToggleCrosshairCommand}"
                             Size="Medium"
                             SmallImage="/Assets/Icons/crosshair.png"
                             Text="辅助线" />
@@ -400,6 +401,48 @@
                         Size="Large"
                         SmallImage="/Assets/Icons/spiral.png" />
                 </telerik:RadRibbonGroup>
+
+                <telerik:RadRibbonGroup Header="测量工具">
+                    <telerik:RadRibbonGroup.Variants>
+                        <telerik:GroupVariant Priority="0" Variant="Large" />
+                    </telerik:RadRibbonGroup.Variants>
+
+                    <!--  第一列: 点点距 + 点线距  -->
+                    <StackPanel>
+                        <telerik:RadRibbonButton
+                            telerik:ScreenTip.Description="测量两点之间的距离"
+                            telerik:ScreenTip.Title="点点距测量"
+                            Command="{Binding PointDistanceMeasureCommand}"
+                            Size="Medium"
+                            SmallImage="/Assets/Icons/crosshair.png"
+                            Text="点点距测量" />
+                        <telerik:RadRibbonButton
+                            telerik:ScreenTip.Description="测量点到直线的距离"
+                            telerik:ScreenTip.Title="点线距测量"
+                            Command="{Binding PointLineDistanceMeasureCommand}"
+                            Size="Medium"
+                            SmallImage="/Assets/Icons/mark.png"
+                            Text="点线距测量" />
+                    </StackPanel>
+
+                    <!--  第二列: 角度 + 通孔填锡率  -->
+                    <StackPanel>
+                        <telerik:RadRibbonButton
+                            telerik:ScreenTip.Description="测量两条线之间的角度"
+                            telerik:ScreenTip.Title="角度测量"
+                            Command="{Binding AngleMeasureCommand}"
+                            Size="Medium"
+                            SmallImage="/Assets/Icons/dynamic-range.png"
+                            Text="角度测量" />
+                        <telerik:RadRibbonButton
+                            telerik:ScreenTip.Description="测量通孔填锡率"
+                            telerik:ScreenTip.Title="通孔填锡率测量"
+                            Command="{Binding ThroughHoleFillRateMeasureCommand}"
+                            Size="Medium"
+                            SmallImage="/Assets/Icons/pores.png"
+                            Text="通孔填锡率" />
+                    </StackPanel>
+                </telerik:RadRibbonGroup>
                 <!--
               <telerik:RadRibbonGroup Header="图像处理">
                     <telerik:RadRibbonGroup.Variants>
diff --git a/XplorePlane/Views/Main/ViewportPanelView.xaml b/XplorePlane/Views/Main/ViewportPanelView.xaml
index f3dafa4..033ff14 100644
--- a/XplorePlane/Views/Main/ViewportPanelView.xaml
+++ b/XplorePlane/Views/Main/ViewportPanelView.xaml
@@ -10,6 +10,7 @@
     d:DesignHeight="400"
     d:DesignWidth="600"
     mc:Ignorable="d">
+    <UserControl.Resources />
     <Grid Background="#FFFFFF">
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto" />
@@ -23,10 +24,27 @@
                        FontWeight="SemiBold" Foreground="#333333" Text="实时图像" />
         </Border>
 
-        <!-- 图像显示区域，支持滚动、缩放和ROI -->
-        <roi:PolygonRoiCanvas Grid.Row="1"
-                              ImageSource="{Binding ImageSource}"
-                              Background="White" />
+        <!-- 图像显示区域 -->
+        <Grid Grid.Row="1">
+            <roi:PolygonRoiCanvas x:Name="RoiCanvas"
+                                  ImageSource="{Binding ImageSource}"
+                                  Background="White">
+                <roi:PolygonRoiCanvas.ContextMenu>
+                    <ContextMenu>
+                        <MenuItem Header="放大" Click="ZoomIn_Click" />
+                        <MenuItem Header="缩小" Click="ZoomOut_Click" />
+                        <MenuItem Header="适应窗口" Click="ResetView_Click" />
+                        <Separator />
+                        <MenuItem Header="保存原始图像" Click="SaveOriginalImage_Click" />
+                        <MenuItem Header="保存结果图像" Click="SaveResultImage_Click" />
+                        <Separator />
+                        <MenuItem Header="清除所有绘制" Click="ClearAllMeasurements_Click" />
+                    </ContextMenu>
+                </roi:PolygonRoiCanvas.ContextMenu>
+            </roi:PolygonRoiCanvas>
+
+            <!-- 十字线和测量功能已内置于 PolygonRoiCanvas -->
+        </Grid>
 
 
     </Grid>
diff --git a/XplorePlane/Views/Main/ViewportPanelView.xaml.cs b/XplorePlane/Views/Main/ViewportPanelView.xaml.cs
index 7eddbee..bd03651 100644
--- a/XplorePlane/Views/Main/ViewportPanelView.xaml.cs
+++ b/XplorePlane/Views/Main/ViewportPanelView.xaml.cs
@@ -1,4 +1,15 @@
+using System;
+using System.ComponentModel;
+using System.IO;
+using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using Microsoft.Win32;
+using Prism.Ioc;
+using XP.ImageProcessing.RoiControl.Controls;
+using XplorePlane.Events;
+using XplorePlane.ViewModels;
 
 namespace XplorePlane.Views
 {
@@ -7,6 +18,137 @@ namespace XplorePlane.Views
         public ViewportPanelView()
         {
             InitializeComponent();
+            DataContextChanged += OnDataContextChanged;
+
+            // 测量事件 → 更新状态栏
+            RoiCanvas.MeasureCompleted += (s, e) =>
+            {
+                if (e is MeasureCompletedEventArgs args && DataContext is ViewportPanelViewModel vm)
+                {
+                    vm.MeasurementResult = $"{args.Distance:F2} px";
+                    string typeLabel = args.MeasureType == "PointToLine" ? "点线距" : "点点距";
+                    vm.ImageInfo = $"{typeLabel}: {args.Distance:F2} px | ({args.P1.X:F0},{args.P1.Y:F0}) → ({args.P2.X:F0},{args.P2.Y:F0}) | 共 {args.TotalCount} 条测量";
+                }
+            };
+            RoiCanvas.MeasureStatusChanged += (s, e) =>
+            {
+                if (e is MeasureStatusEventArgs args && DataContext is ViewportPanelViewModel vm)
+                    vm.ImageInfo = args.Message;
+            };
+
+            // 十字辅助线：直接订阅 Prism 事件
+            try
+            {
+                var ea = ContainerLocator.Current?.Resolve<Prism.Events.IEventAggregator>();
+                ea?.GetEvent<ToggleCrosshairEvent>().Subscribe(() =>
+                {
+                    RoiCanvas.ShowCrosshair = !RoiCanvas.ShowCrosshair;
+                }, Prism.Events.ThreadOption.UIThread);
+
+                // 测量模式：直接订阅 Prism 事件
+                ea?.GetEvent<MeasurementToolEvent>().Subscribe(mode =>
+                {
+                    RoiCanvas.CurrentMeasureMode = mode switch
+                    {
+                        MeasurementToolMode.PointDistance => XP.ImageProcessing.RoiControl.Models.MeasureMode.PointDistance,
+                        MeasurementToolMode.PointLineDistance => XP.ImageProcessing.RoiControl.Models.MeasureMode.PointToLine,
+                        _ => XP.ImageProcessing.RoiControl.Models.MeasureMode.None
+                    };
+                }, Prism.Events.ThreadOption.UIThread);
+            }
+            catch { }
+        }
+
+        private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            if (e.OldValue is INotifyPropertyChanged oldVm)
+                oldVm.PropertyChanged -= OnVmPropertyChanged;
+            if (e.NewValue is INotifyPropertyChanged newVm)
+                newVm.PropertyChanged += OnVmPropertyChanged;
+        }
+
+        private void OnVmPropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            // 测量模式和十字线通过 Prism 事件直接驱动，不再依赖 PropertyChanged
+        }
+
+        #region 右键菜单
+
+        private void ZoomIn_Click(object sender, RoutedEventArgs e) => RoiCanvas.ZoomScale = Math.Min(10.0, RoiCanvas.ZoomScale * 1.2);
+        private void ZoomOut_Click(object sender, RoutedEventArgs e) => RoiCanvas.ZoomScale = Math.Max(0.1, RoiCanvas.ZoomScale / 1.2);
+        private void ResetView_Click(object sender, RoutedEventArgs e) => RoiCanvas.ResetView();
+
+        private void ClearAllMeasurements_Click(object sender, RoutedEventArgs e)
+        {
+            RoiCanvas.ClearMeasurements();
+            if (DataContext is ViewportPanelViewModel vm)
+            {
+                vm.ResetMeasurementState();
+                vm.ImageInfo = "已清除所有测量";
+            }
+        }
+
+        private void SaveOriginalImage_Click(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is not ViewportPanelViewModel vm || vm.ImageSource is not BitmapSource bitmap)
+            {
+                MessageBox.Show("当前没有可保存的图像", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+            SaveBitmapToFile(bitmap, "保存原始图像");
+        }
+
+        private void SaveResultImage_Click(object sender, RoutedEventArgs e)
+        {
+            var target = FindChildByName<Canvas>(RoiCanvas, "mainCanvas");
+            if (target == null)
+            {
+                MessageBox.Show("当前没有可保存的图像", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+            var width = (int)target.ActualWidth;
+            var height = (int)target.ActualHeight;
+            if (width == 0 || height == 0) return;
+
+            var rtb = new RenderTargetBitmap(width, height, 96, 96, PixelFormats.Pbgra32);
+            rtb.Render(target);
+            SaveBitmapToFile(rtb, "保存结果图像");
+        }
+
+        private static void SaveBitmapToFile(BitmapSource bitmap, string title)
+        {
+            var dialog = new SaveFileDialog
+            {
+                Title = title,
+                Filter = "PNG 图像|*.png|BMP 图像|*.bmp|JPEG 图像|*.jpg",
+                DefaultExt = ".png"
+            };
+            if (dialog.ShowDialog() != true) return;
+
+            BitmapEncoder encoder = Path.GetExtension(dialog.FileName).ToLower() switch
+            {
+                ".bmp" => new BmpBitmapEncoder(),
+                ".jpg" or ".jpeg" => new JpegBitmapEncoder(),
+                _ => new PngBitmapEncoder()
+            };
+            encoder.Frames.Add(BitmapFrame.Create(bitmap));
+            using var fs = new FileStream(dialog.FileName, FileMode.Create);
+            encoder.Save(fs);
+        }
+
+        #endregion
+
+        private static T FindChildByName<T>(DependencyObject parent, string name) where T : FrameworkElement
+        {
+            int count = VisualTreeHelper.GetChildrenCount(parent);
+            for (int i = 0; i < count; i++)
+            {
+                var child = VisualTreeHelper.GetChild(parent, i);
+                if (child is T t && t.Name == name) return t;
+                var result = FindChildByName<T>(child, name);
+                if (result != null) return result;
+            }
+            return null;
         }
     }
-}
\ No newline at end of file
+}