对算法输入参数非法情况进行过滤

XP.ImageProcessing.Core/ImageProcessorBase.cs

@@ -15,6 +15,7 @@
 using Emgu.CV;
 using Emgu.CV.Structure;
 using Emgu.CV.Util;
+using System.Globalization;
 
 namespace XP.ImageProcessing.Core;
 
@@ -164,11 +165,45 @@ public abstract class ImageProcessorBase
     /// </summary>
     public T GetParameter<T>(string name)
     {
-        if (Parameters.ContainsKey(name))
+        if (!Parameters.ContainsKey(name))
+            throw new ArgumentException($"参数 {name} 不存在");
+
+        var parameter = Parameters[name];
+
+        try
         {
-            return (T)Convert.ChangeType(Parameters[name].Value, typeof(T))!;
+            if (parameter.Value is T typedValue)
+                return typedValue;
+
+            if (parameter.Value is string textValue)
+            {
+                var normalizedText = NormalizeText(textValue);
+                if (typeof(T) == typeof(string))
+                    return (T)(object)textValue;
+
+                if (typeof(T) == typeof(int) && int.TryParse(normalizedText, NumberStyles.Integer, CultureInfo.InvariantCulture, out var intValue))
+                    return (T)(object)intValue;
+
+                if (typeof(T) == typeof(double) && double.TryParse(normalizedText, NumberStyles.Float | NumberStyles.AllowThousands, CultureInfo.InvariantCulture, out var doubleValue))
+                    return (T)(object)doubleValue;
+
+                if (typeof(T) == typeof(bool) && bool.TryParse(normalizedText, out var boolValue))
+                    return (T)(object)boolValue;
+            }
+
+            return (T)Convert.ChangeType(parameter.Value, typeof(T), CultureInfo.InvariantCulture)!;
         }
-        throw new ArgumentException($"参数 {name} 不存在");
+        catch (Exception ex)
+        {
+            throw new ArgumentException(
+                $"参数 {name} 的值 '{parameter.Value}' 无法转换为 {typeof(T).Name}",
+                ex);
+        }
+    }
+
+    private static string NormalizeText(string value)
+    {
+        return value.Trim().TrimEnd('、', '，', ',', '。', '.', ';', '；', ':', '：');
     }
 
     /// <summary>
@@ -178,4 +213,4 @@ public abstract class ImageProcessorBase
     {
         return Parameters.ContainsKey(name) ? Parameters[name] : null;
     }
-}
+}