.net 中Bitmap和Halcon中HObject的相互转换

        public void Bitmap2HObjectBpp24(Bitmap bmp, out HObject image)
        {
            try
            {
                Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);

                BitmapData srcBmpData = bmp.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
                HOperatorSet.GenImageInterleaved(out image, srcBmpData.Scan0, "bgr", bmp.Width, bmp.Height, 0, "byte", 0, 0, 0, 0, -1, 0);
                bmp.UnlockBits(srcBmpData);

            }
            catch (Exception ex)
            {
                image = null;
            }
        }

        public void Bitmap2HObjectBpp8(Bitmap bmp, out HObject image)
        {
            try
            {
                Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);

                BitmapData srcBmpData = bmp.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);

                HOperatorSet.GenImage1(out image, "byte", bmp.Width, bmp.Height, srcBmpData.Scan0);
                bmp.UnlockBits(srcBmpData);
            }
            catch (Exception ex)
            {
                image = null;
            }
        }

实际使用时，假如原图8位灰度图，那么BitmapToHObjectBpp8 和BitmapToHObjectBpp24的结果是一样的。而为24位彩色图时，只能用BitmapToHObjectBpp24。
可先得到Bitmap 图的PixelFormat ，而后再进行转换。

以下HObject to Bitmap部分参考：http://blog.csdn.net/miehuo/article/details/48751353

private void HObject2Bpp8(HObject image, out Bitmap res)  
{  
	HTuple hpoint, type, width, height;  

	const int Alpha = 255;  
	int[] ptr = new int[2];  
	HOperatorSet.GetImagePointer1(image, out hpoint, out type, out width, out height);  

	res = new Bitmap(width, height, PixelFormat.Format8bppIndexed);  
	ColorPalette pal = res.Palette;  
	for (int i = 0; i <= 255; i++)  
	{  
		pal.Entries[i] = Color.FromArgb(Alpha, i, i, i);  
	}  
	res.Palette = pal;  
	Rectangle rect = new Rectangle(0, 0, width, height);  
	BitmapData bitmapData = res.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);  
	int PixelSize = Bitmap.GetPixelFormatSize(bitmapData.PixelFormat) / 8;  
	ptr[0] = bitmapData.Scan0.ToInt32();  
	ptr[1] = hpoint.I;  
	if (width % 4 == 0)  
		CopyMemory(ptr[0], ptr[1], width * height * PixelSize);  
	else  
	{  
		for (int i = 0; i < height - 1; i++)  
		{  
			ptr[1] += width;  
			CopyMemory(ptr[0], ptr[1], width * PixelSize);  
			ptr[0] += bitmapData.Stride;  
		}  
	}  
	res.UnlockBits(bitmapData);  
  
}  
  
private void HObject2Bpp24(HObject image, out Bitmap res)  
{  
	HTuple hred, hgreen, hblue, type, width, height;  

	HOperatorSet.GetImagePointer3(image, out hred, out hgreen, out hblue, out type, out width, out height);  

	res = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppRgb);  

	Rectangle rect = new Rectangle(0, 0, width, height);  
	BitmapData bitmapData = res.LockBits(rect, ImageLockMode.ReadWrite, PixelFormat.Format32bppRgb);  
	unsafe  
	{  
		byte* bptr = (byte*)bitmapData.Scan0;  
		byte* r = ((byte*)hred.I);  
		byte* g = ((byte*)hgreen.I);  
		byte* b = ((byte*)hblue.I);  
		for (int i = 0; i < width * height; i++)  
		{  
			bptr[i * 4] = (b)[i];  
			bptr[i * 4 + 1] = (g)[i];  
			bptr[i * 4 + 2] = (r)[i];  
			bptr[i * 4 + 3] = 255;  
		}  
	}  

	res.UnlockBits(bitmapData);  

}