/// <summary>
///
/// </summary>
/// <param name="m"></param>
/// <param name="roi"></param>
public GpuMat(GpuMat m, CvRect roi)
{
if (m == null)
{
throw new ArgumentNullException("m");
}
ptr = GpuInvoke.GpuMat_new10(m.CvPtr, (CvRect)roi);
if (ptr == IntPtr.Zero)
{
throw new OpenCvSharpException();
}
}
