private void Create(int width, int height, CVDepth depth, int channels)
{
image = PInvoke.cvCreateImage(new __CvSize(width, height), (int)depth, channels);
CVUtils.CheckLastError();
created = true;
}
public unsafe CVImage(System.Drawing.Bitmap sourceImage)
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle();
rect.X = 0;
rect.Y = 0;
rect.Width = sourceImage.Width;
rect.Height = sourceImage.Height;
System.Drawing.Imaging.BitmapData bData =
sourceImage.LockBits(rect,
System.Drawing.Imaging.ImageLockMode.ReadWrite,
PixelFormat.Format24bppRgb);
// New implementation:
int pixelSizeInBytes = 8;
int numberOfChannels = 3;
this.image =
PInvoke.cvCreateImage(
new __CvSize(sourceImage.Width, sourceImage.Height),
pixelSizeInBytes,
numberOfChannels);
CVUtils.CheckLastError();
unsafe
{
int height = sourceImage.Height;
int width = sourceImage.Width;
byte *pRead = (byte *)bData.Scan0.ToPointer();
byte *pWrite = this.Internal.ToPointer()->imageData;
int nReadStride = bData.Stride - width * numberOfChannels;
int nWriteStride = this.Internal.ToPointer()->widthStep - width * numberOfChannels;
for (int row = 0; row < height; ++row, pRead += nReadStride, pWrite += nWriteStride)
{
for (int col = 0; col < width; ++col, pRead += numberOfChannels, pWrite += numberOfChannels)
{
pWrite[0] = pRead[0]; // Blue
pWrite[1] = pRead[1]; // Green
pWrite[2] = pRead[2]; // Red
}
}
}
#region Old Implementation
//__IplImagePtr tempImage = PInvoke.cvCreateImageHeader(new __CvSize(sourceImage.Width, sourceImage.Height), 8, Bitmap.GetPixelFormatSize(sourceImage.PixelFormat) / 8);
//tempImage.ToPointer()->imageData = (byte*)bData.Scan0.ToPointer();
//__IplImagePtr[] dst = new __IplImagePtr[4];
//for (int i = 0; i < 4; ++i)
//{
// dst[i] = IntPtr.Zero;
//}
//for (int i = 0; i < tempImage.ToPointer()->nChannels; i++)
//{
// dst[i] = PInvoke.cvCreateImage(new __CvSize(sourceImage.Width, sourceImage.Height), 8, 1);
//}
//PInvoke.cvSplit(
// tempImage,
// dst[0],
// dst[1],
// dst[2],
// dst[3]);
//image = PInvoke.cvCreateImage(new __CvSize(sourceImage.Width, sourceImage.Height), 8, 3);
//PInvoke.cvMerge(dst[0], dst[1], dst[2], IntPtr.Zero, image) ;
//for (int i = 0; i < tempImage.ToPointer()->nChannels; i++)
//{
// PInvoke.cvReleaseImage(ref dst[i]);
//}
#endregion
created = true;
sourceImage.UnlockBits(bData);
}
