OpenCvSharp.Cv2.DrawKeypoints C# (CSharp) Method

        public static void DrawKeypoints(Mat image, IEnumerable<KeyPoint> keypoints, Mat outImage,
            Scalar? color = null, DrawMatchesFlags flags = DrawMatchesFlags.Default)
        {
            if (image == null)
                throw new ArgumentNullException(nameof(image));
            if (outImage == null)
                throw new ArgumentNullException(nameof(outImage));
            if (keypoints == null)
                throw new ArgumentNullException(nameof(keypoints));
            image.ThrowIfDisposed();
            outImage.ThrowIfDisposed();

            KeyPoint[] keypointsArray = EnumerableEx.ToArray(keypoints);
            Scalar color0 = color.GetValueOrDefault(Scalar.All(-1));
            NativeMethods.features2d_drawKeypoints(image.CvPtr, keypointsArray, keypointsArray.Length,
                outImage.CvPtr, color0, (int)flags);
        }