AForge.Imaging.UnmanagedImage.Clone C# (CSharp) Method

        public UnmanagedImage Clone( )
        {
            // allocate memory for the image
            IntPtr newImageData = System.Runtime.InteropServices.Marshal.AllocHGlobal( stride * height );

            UnmanagedImage newImage = new UnmanagedImage( newImageData, width, height, stride, pixelFormat );
            newImage.mustBeDisposed = true;

            AForge.SystemTools.CopyUnmanagedMemory( newImageData, imageData, stride * height );

            return newImage;
        }

        /// <summary>
        /// Get rectangle contain object in current frame
        /// </summary>
        /// <param name="templateInfo">Tracking template information</param>
        /// <param name="source">Frame</param>
        /// <returns>Rectangle contain object</returns>
        public static Rectangle TemplateColorTracking(ImageStatistics templateInfo, ref UnmanagedImage source)
        {
            UnmanagedImage image = source.Clone();
            // create filter
            EuclideanColorFiltering filter = new EuclideanColorFiltering();
            // set center colol and radius
            filter.CenterColor = new RGB(
                (byte)templateInfo.Red.Mean,
                (byte)templateInfo.Green.Mean,
                (byte)templateInfo.Blue.Mean);
            filter.Radius = 30;
            // apply the filter
            filter.ApplyInPlace(image);

            image = Grayscale.CommonAlgorithms.BT709.Apply(image);

            OtsuThreshold threshold = new OtsuThreshold();
            threshold.ApplyInPlace(image);

            BlobCounter blobCounter = new BlobCounter();
            blobCounter.ObjectsOrder = ObjectsOrder.Size;
            blobCounter.ProcessImage(image);

            Rectangle rect = blobCounter.ObjectsCount > 0 ? blobCounter.GetObjectsRectangles()[0] : Rectangle.Empty;
            return rect;
        }