小转盘基本都能出列

DH.Devices.Camera/Do3ThinkCamera.cs

@@ -57,7 +57,7 @@ namespace DH.Devices.Camera
                     throw new Exception($"Create device failed:{nRet:x8}");
                 }
 
-                nRet = DVPCamera.dvpSetTargetFormat(m_handle, dvpStreamFormat);
+                nRet = DVPCamera.dvpSetTargetFormat(m_handle, (dvpStreamFormat)dvpStreamFormat);
                 if (dvpStatus.DVP_STATUS_OK != nRet)
                 {
                     throw new Exception($"Set image format failed:{nRet:x8}");
@@ -308,6 +308,8 @@ namespace DH.Devices.Camera
 
         public int ImageCallbackFunc(uint handle, dvpStreamEvent _event, IntPtr pContext, ref dvpFrame refFrame, IntPtr pBuffer)
         {
+            Mat cvImage = new Mat();
+
             try
             {
 
@@ -316,8 +318,7 @@ namespace DH.Devices.Camera
    
                 int nWidth = refFrame.iWidth;
                 int nHeight = refFrame.iHeight;
-                Mat cvImage = new Mat();
-
+            
                 // 根据图像格式创建Mat
                 switch (refFrame.format)
                 {
@@ -337,7 +338,8 @@ namespace DH.Devices.Camera
                     default:
                         throw new NotSupportedException($"Unsupported format: {refFrame.format}");
                 }
-                OnHImageOutput?.Invoke(DateTime.Now, this, cvImage);
+                Mat smat = cvImage.Clone();
+                OnHImageOutput?.Invoke(DateTime.Now, this, smat);
 
 
 
@@ -348,6 +350,10 @@ namespace DH.Devices.Camera
             catch (Exception ex)
             {
               
+            }
+            finally
+            {
+                cvImage?.Dispose();
             }
             return 0;
         }