Accord.Imaging.Filters.GrayscaleToRGB.ProcessFilter C# (CSharp) Method

        protected override unsafe void ProcessFilter( UnmanagedImage sourceData, UnmanagedImage destinationData )
        {
            // get width and height
            int width = sourceData.Width;
            int height = sourceData.Height;

            int srcOffset = sourceData.Stride - width;
            int dstOffset = destinationData.Stride - width * 3;

            // do the job
            byte * src = (byte*) sourceData.ImageData.ToPointer( );
            byte * dst = (byte*) destinationData.ImageData.ToPointer( );

            // for each line
            for ( int y = 0; y < height; y++ )
            {
                // for each pixel
                for ( int x = 0; x < width; x++, src++, dst += 3 )
                {
                    dst[RGB.R] = dst[RGB.G] = dst[RGB.B] = *src;
                }
                src += srcOffset;
                dst += dstOffset;
            }
        }
    }