/// <summary>
/// Detect keypoints in the CudaImage
/// </summary>
/// <param name="img">The image where keypoints will be detected from</param>
/// <param name="mask">The optional mask, can be null if not needed</param>
/// <returns>
/// The keypoints GpuMat that will have 1 row.
/// keypoints.at<float[6]>(1, i) contains i'th keypoint
/// format: (x, y, size, response, angle, octave)
/// </returns>
public GpuMat DetectKeyPointsRaw(GpuMat img, GpuMat mask = null)
{
GpuMat result = new GpuMat();
ContribInvoke.cudaSURFDetectorDetectKeyPoints(_ptr, img, mask, result);
return(result);
}