diff --git a/XplorePlane/Services/Inspection/Task/BallOverlayService.cs b/XplorePlane/Services/Inspection/Task/BallOverlayService.cs
index 2d796ddf..c1f323c6 100644
--- a/XplorePlane/Services/Inspection/Task/BallOverlayService.cs
+++ b/XplorePlane/Services/Inspection/Task/BallOverlayService.cs
@@ -28,9 +28,13 @@ namespace XplorePlane.Services.Inspection.Tasks
         {
             ArgumentNullException.ThrowIfNull(balls);
             ArgumentNullException.ThrowIfNull(context);
+            var labels = BgaBallGroupLabeler.AssignLabels(
+                balls,
+                XplorePlane.Models.Inspection.BgaGridIndexingMode.AlphaNumericTopLeft);
             _overlay.PublishBgaBalls(balls.Select(ball => new BallOverlayItem
             {
                 Id = ball.Id,
+                Label = labels.TryGetValue(ball.Id, out var label) ? label : string.Empty,
                 CenterX = (ball.X - context.OriginX) * context.ScaleX,
                 CenterY = (ball.Y - context.OriginY) * context.ScaleY,
                 Diameter = ball.Diameter * ((context.ScaleX + context.ScaleY) / 2),
diff --git a/XplorePlane/ViewModels/Inspection/TaskWizard/InspectionTaskWizardViewModel.cs b/XplorePlane/ViewModels/Inspection/TaskWizard/InspectionTaskWizardViewModel.cs
index 800c255f..fba9a9b0 100644
--- a/XplorePlane/ViewModels/Inspection/TaskWizard/InspectionTaskWizardViewModel.cs
+++ b/XplorePlane/ViewModels/Inspection/TaskWizard/InspectionTaskWizardViewModel.cs
@@ -179,7 +179,8 @@ namespace XplorePlane.ViewModels.Inspection.TaskWizard
             }
         }
 
-        private int _poolColumns = 2;
+        // 参考 BGA_Insp_Tang_1：4 列 × 4 行，编号从左上角开始 A1，右下角为 D4。
+        private int _poolColumns = 4;
 
         public int PoolColumns
         {
@@ -187,7 +188,7 @@ namespace XplorePlane.ViewModels.Inspection.TaskWizard
             set => SetProperty(ref _poolColumns, value);
         }
 
-        private int _poolRows = 2;
+        private int _poolRows = 4;
 
         public int PoolRows
         {
@@ -195,7 +196,7 @@ namespace XplorePlane.ViewModels.Inspection.TaskWizard
             set => SetProperty(ref _poolRows, value);
         }
 
-        private int _ballsPerBlock = 16;
+        private int _ballsPerBlock = 1;
 
         public int BallsPerBlock
         {
@@ -609,12 +610,15 @@ namespace XplorePlane.ViewModels.Inspection.TaskWizard
             }
 
             CurrentStage = InspectionTaskStage.BGADetected;
+            // 锁定流水线后立即执行一次识别，避免用户必须再次点击“开始识别”才能继续。
+            _ = ExecuteRunBgaDetectionUnified();
         }
 
         private async Task ExecuteRunBgaDetectionUnified()
         {
             var pipeline = InspectionTask?.PipelineSnapshot;
-            var sourceImage = _viewportService?.LatestDetectorImage as BitmapSource
+            var sourceImage = _viewportService?.CurrentHistogramSource16 as BitmapSource
+                ?? _viewportService?.LatestDetectorImage as BitmapSource
                 ?? _viewportService?.CurrentDisplayImage as BitmapSource;
             if (pipeline == null || sourceImage == null)
             {