一般情况下，图像的width是4的倍数的话，用以下代码便可将彩色bitmap转出halcon里的HObject
public void Bitmap2HObject(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;}}因为Bitmap4字节对齐，非4的整数倍宽度的图像，后面会补0来达到4的倍数。如图像width=810，每行810个字节，实际内存每行后面会补两个字节，宽度变为812个字节。如果按照上面的方法得到的图像如下图所示。
要避免这种情况，得重新搞好对应关系，我写了以下方法，可以得到正确的图像
public void Bitmap2HObjectS(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);byte[] r = new byte[srcBmpData.Height * srcBmpData.Width];byte[] g = new byte[srcBmpData.Height * srcBmpData.Width];byte[] b = new byte[srcBmpData.Height * srcBmpData.Width];IntPtr ptr1 = Marshal.UnsafeAddrOfPinnedArrayElement(r, 0);IntPtr ptr2 = Marshal.UnsafeAddrOfPinnedArrayElement(g, 0);IntPtr ptr3 = Marshal.UnsafeAddrOfPinnedArrayElement(b, 0);unsafe{ byte* pIn = (byte*)(srcBmpData.Scan0.ToPointer());for (int y = 0; y < srcBmpData.Height; y++) //列扫描{for (int x = 0; x < srcBmpData.Width; x++) //行扫描{int index = y * srcBmpData.Width + x;r[index] = pIn[0];g[index] = pIn[1];b[index] = pIn[2];pIn += 3;}pIn += srcBmpData.Stride - srcBmpData.Width * 3;} }HOperatorSet.GenImage3(out image, "byte", srcBmpData.Width, srcBmpData.Height, new HTuple(ptr3), new HTuple(ptr2), new HTuple(ptr1)); bmp.UnlockBits(srcBmpData);}catch (Exception ex){image = null;}}测试如下图所示
