unity3d中图像导出到OpenCV中

首先从相机或者Texture中获得存储图像块

Color32[] pixels = Texture2D.GetPixels32();

//或者WebCamTexture.GetPixels32 ();

再使用GCHandle获得块的指针

GCHandle pixelHandle = GCHandle.Alloc(pixels, GCHandleType.Pinned);

IntPtr pixelPointer = pixelHandle.AddrOfPinnedObject();

然后将此指针传递给OpenCV使用即可。以dll方式进行数据传递。

unity3d中调用如下

][DllImport(@"Unity2OpenCVImage.dll")]

private static extern void Unity2OpenCVImage(IntPtr data,int width,int height,int stride);

opencv中的dll函数为

void Unity2OpenCVImage(char* imageData,int width,int height,int stride)
{
if(NULL==imageData)
{
return;
}
cv::Mat opencvImage(height,width,CV_8UC4);
memcpy(opencvImage.data,imageData,stride*height);
cv::cvtColor(opencvImage,opencvImage,CV_BGR2RGB);
// cv::imshow("11",opencvImage);
// cv::waitKey(1);
}
}