'System.AccessViolationException' 同时将 `Emgu.CV.Mat` 分配给 `Emgu.CV.UI.ImageBox` (Emgu)
'System.AccessViolationException' while assigning `Emgu.CV.Mat` to `Emgu.CV.UI.ImageBox` (Emgu)
嗨,我想做的是将 Emgu.CV.Mat
分配给 Emgu.CV.UI.ImageBox
,但我在 CvInvokeCore.cs
文件中不断收到 System.AccessViolationException
错误(第 2379 行 cveMinMaxLoc(iaArr, ref minVal, ref maxVal, ref minLoc, ref maxLoc, iaMask);
):
An unhandled exception of type 'System.AccessViolationException' occurred in Emgu.CV.World.dll
Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
代码非常简单。我生成一个位图
Bitmap tmp = mybitmap.getBitmap(); // generates my Bitmap
pictureBox1.Image = tmp; // assigning it to an Win Form picture Box works pretty fine
imageBox1.Image = ConvertBitmapToMat(tmp); // but converting the Bitmap to an Mat file
// and try to assign it to an
// Emgu.CV.UI.ImageBox throws the
// error in the above mentioned file.
我使用的ConvertBitmapToMat()
代码是:
public Mat ConvertBitmapToMat(Bitmap bmp)
{
// Lock the bitmap's bits.
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
System.Drawing.Imaging.BitmapData bmpData =
bmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite,
bmp.PixelFormat);
// data = scan0 is a pointer to our memory block.
IntPtr data = bmpData.Scan0;
// step = stride = amount of bytes for a single line of the image
int step = bmpData.Stride;
// So you can try to get you Mat instance like this:
Mat mat = new Mat(bmp.Height, bmp.Width, Emgu.CV.CvEnum.DepthType.Cv32F, 4, data, step);
// Unlock the bits.
bmp.UnlockBits(bmpData);
return mat;
}
发现于 http://avidprogrammer.blogspot.de/2016/05/emgucv-c-convert-bitmap-object-to-mat.html
对此有什么建议吗?
使用图片<>
Bitmap tmp = mybitmap.getBitmap();
Image<Bgr,Byte> img = new Image<Bgr,Byte>(tmp);
imageBox1.Image = img;
如果你需要Mat类型,只需使用img.Mat
嗨,我想做的是将 Emgu.CV.Mat
分配给 Emgu.CV.UI.ImageBox
,但我在 CvInvokeCore.cs
文件中不断收到 System.AccessViolationException
错误(第 2379 行 cveMinMaxLoc(iaArr, ref minVal, ref maxVal, ref minLoc, ref maxLoc, iaMask);
):
An unhandled exception of type 'System.AccessViolationException' occurred in Emgu.CV.World.dll
Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
代码非常简单。我生成一个位图
Bitmap tmp = mybitmap.getBitmap(); // generates my Bitmap
pictureBox1.Image = tmp; // assigning it to an Win Form picture Box works pretty fine
imageBox1.Image = ConvertBitmapToMat(tmp); // but converting the Bitmap to an Mat file
// and try to assign it to an
// Emgu.CV.UI.ImageBox throws the
// error in the above mentioned file.
我使用的ConvertBitmapToMat()
代码是:
public Mat ConvertBitmapToMat(Bitmap bmp)
{
// Lock the bitmap's bits.
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
System.Drawing.Imaging.BitmapData bmpData =
bmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite,
bmp.PixelFormat);
// data = scan0 is a pointer to our memory block.
IntPtr data = bmpData.Scan0;
// step = stride = amount of bytes for a single line of the image
int step = bmpData.Stride;
// So you can try to get you Mat instance like this:
Mat mat = new Mat(bmp.Height, bmp.Width, Emgu.CV.CvEnum.DepthType.Cv32F, 4, data, step);
// Unlock the bits.
bmp.UnlockBits(bmpData);
return mat;
}
发现于 http://avidprogrammer.blogspot.de/2016/05/emgucv-c-convert-bitmap-object-to-mat.html
对此有什么建议吗?
使用图片<>
Bitmap tmp = mybitmap.getBitmap();
Image<Bgr,Byte> img = new Image<Bgr,Byte>(tmp);
imageBox1.Image = img;
如果你需要Mat类型,只需使用img.Mat