I'm trying to calculate the orientation of a garyscale image using the gradient magnitude and OpenCvSharp. The problem is that the "Pow" function does not look right for IplImage. I also want to know how can I calculate the feature image of tan -1 (or Arktan) am I thank you (IplImage cvImage = new IplImage ( "grayImage.png", LoadMode .AnyDepth | using using using LoadMode.GrayScale)) (IplImage dstXImage = new IplImage (cvImage.Size, cvImage.Depth, cvImage.NChannels)) (IplImage dstYImage = new IplImage (cvImage.Size, cvImage. Depth, cvImage.NChannels)) {float [] data = {0, -1, -1, 2}; CvMat kernel = new CvMat (2, 2, matrix type. F32C1, data); CV Sobel (CViS, DSTXImage, 1, 0, Aperture Size Size 1); CV Sobel (cvImage, dstYImage, 0, 1, ApertureSize.Size1); Cv.Normalize (dstXImage, dstXImage, 1.0, 0, NormType.L1); Cv.Filter2D (cvImage, dstXImage, kernel, new CvPoint (0, 0)); Cv.Normalize (dstYImage, dstYImage, 1.0, 0, NormType.L1); Cv.Filter2D (cvImage, dstYIm...