Minor changes.

CMakeLists.txt

@@ -1221,16 +1221,14 @@ ELSEIF (WIN32)
 	"${INSTALL_DEBUGER_VISUALIZER_COMMAND}
     ExecDos::exec /NOUNLOAD /TOSTACK '\\\$INSTDIR\\\\miscellaneous\\\\vswhere.exe -version [16.0,17.0) -property installationPath' '' '$EXEDIR\\\\execdos.log'
 	Pop $0 
-	StrCmp $0 0 0 Find_VS_Failed
+	StrCmp $0 0 0 Find_VS_Install_Failed
 	Pop $1
 	StrCpy $${vs_version}_INSTALL_FOLDER '\\\$1\\\\Common7\\\\Packages\\\\Debugger\\\\Visualizers\\\\'
-	goto Find_VS_Success
-	Find_VS_Failed:
-		MessageBox MB_OK 'Failed to find VS2019'
-		goto Find_VS_End
-	Find_VS_Success:
-		MessageBox MB_OK 'Found VS2019: $1'
-	Find_VS_End:
+	goto Find_VS_Install_Success
+	Find_VS_Install_Failed:
+		goto Find_VS_Install_End
+	Find_VS_Install_Success:
+	Find_VS_Install_End:
 	")	
 	ELSE()
 	SET(INSTALL_DEBUGER_VISUALIZER_COMMAND 

Emgu.CV.Example/RealtimeCamera.UWP/MainPage.xaml.cs

@@ -51,9 +51,10 @@ namespace RealtimeCamera
         private Matrix<float> mapx, mapy;
 
         private VideoCapture _capture;
+
         public void Process()
         {
-            Mat m = new Mat();
+            Mat m = new Mat(new System.Drawing.Size(640, 480), DepthType.Cv8U, 3);
             Mat mProcessed = new Mat();
             while (true)
             {
@@ -62,17 +63,7 @@ namespace RealtimeCamera
                 {
                     try
                     {
-                        if (_capture == null)
-                        {
-                            _capture = new VideoCapture();
-                            if (!_capture.IsOpened)
-                            {
-                                //Stop the capture
-                                captureButton_Click(this, null);
-                                continue;
-                            }
-
-                        }
+                        
 
                         //Read the camera data to the mat
                         //Must use VideoCapture.Read function for UWP to read image from capture.
@@ -95,15 +86,15 @@ namespace RealtimeCamera
                                 int centerY = m.Width >> 1;
                                 int centerX = m.Height >> 1;
                                 //CvInvoke.SetIdentity(_cameraMatrix, new MCvScalar(1.0));
-                                _cameraMatrix.SetTo(new double[]
+                                _cameraMatrix.SetTo(new float[]
                                 {
-                                    1, 0, centerY,
-                                    0, 1, centerX,
-                                    0, 0, 1
+                                    1f, 0f, (float)centerY,
+                                    0f, 1f, (float)centerX,
+                                    0f, 0f, 1f
                                 });
 
                                 _distCoeffs = new Mat(new System.Drawing.Size(5, 1), DepthType.Cv32F, 1);
-                                _distCoeffs.SetTo(new double[] { -0.000003, 0, 0, 0, 0 });
+                                _distCoeffs.SetTo(new float[] { -0.000003f, 0f, 0f, 0f, 0f });
                                 mapx = new Matrix<float>(m.Height, m.Width);
                                 mapy = new Matrix<float>(m.Height, m.Width);
                                 CvInvoke.InitUndistortRectifyMap(
@@ -181,6 +172,17 @@ namespace RealtimeCamera
 
             if (_captureEnabled)
             {
+                if (_capture == null)
+                {
+                    _capture = new VideoCapture();
+                    if (!_capture.IsOpened)
+                    {
+                        //Stop the capture
+                        captureButton_Click(this, null);
+                        _captureEnabled = !_captureEnabled;
+                        return;
+                    }
+                }
                 captureButton.Content = "Stop";
             }
             else

Emgu.CV/Core/Mat.cs

@@ -137,7 +137,8 @@ namespace Emgu.CV
         /// <param name="data">The managed array where data will be copied from</param>
         public void SetTo<T>(T[] data)
         {
-            Debug.Assert(data.Length == Total.ToInt32() * ElementSize / Toolbox.SizeOf<T>(), String.Format("Invalid data length, expecting {0} but was {1}", Total.ToInt32() * ElementSize / Toolbox.SizeOf<T>(), data.Length));
+            Debug.Assert(data.Length == Total.ToInt32() * ElementSize / Toolbox.SizeOf<T>(), String.Format("Invalid data length, expecting array of size {0} but got array of size {1}", Total.ToInt32() * ElementSize / Toolbox.SizeOf<T>(), data.Length));
+            //Debug.Assert(CvInvoke.GetDepthType(typeof(T)) == this.Depth, String.Format("Array type {0} do not match Mat data type {1}.", typeof(T), this.Depth));
             GCHandle handle = GCHandle.Alloc(data, GCHandleType.Pinned);
             MatInvoke.cveMatCopyDataFrom(this, handle.AddrOfPinnedObject());
             handle.Free();