在我的C++ DLL中,我从字节数组创建Mat:
BYTE * ptrImageData; //Image data is in this array passed to this function
Mat newImg = Mat(nImageHeight, nImageWidth, CV_8UC3, ptrImageData);
使用一些灰色阴影而不是原始阴影创建图像.
这是从字节数组创建Mat的正确方法吗？
请参阅代码
ptrImageData从C#代码传递给C++ DLL.
传递图像数据的C#代码
System.Drawing.Image srcImage //Has the image
MemoryStream ms = new MemoryStream();
Marshal.FreeHGlobal(ptrImageData);
srcImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] imgArray = ms.ToArray();
ms.Dispose();
int size1 = Marshal.SizeOf(imgArray[0]) * imgArray.Length;
IntPtr ptrImageData = Marshal.AllocHGlobal(size1);
Marshal.Copy(imgArray, 0, ptrImageData, imgArray.Length);
//Calling C++ dll function
ProcessImage(ptrImageData, srcImage.Width, srcImage.Height);
Marshal.FreeHGlobal(ptrImageData);