AForge.Imaging.ImageStatistics.ImageStatistics C# (CSharp) Method

        public ImageStatistics( Bitmap image, Bitmap mask )
        {
            CheckSourceFormat( image.PixelFormat );
            CheckMaskProperties( mask.PixelFormat, new Size( mask.Width, mask.Height ), new Size( image.Width, image.Height ) );

            // lock bitmap and mask data
            BitmapData imageData = image.LockBits(
                new Rectangle( 0, 0, image.Width, image.Height ),
                ImageLockMode.ReadOnly, image.PixelFormat );
            BitmapData maskData = mask.LockBits(
                new Rectangle( 0, 0, mask.Width, mask.Height ),
                ImageLockMode.ReadOnly, mask.PixelFormat );

            try
            {
                // gather statistics
                unsafe
                {
                    ProcessImage( new UnmanagedImage( imageData ), (byte*) maskData.Scan0.ToPointer( ), maskData.Stride );
                }
            }
            finally
            {
                // unlock images
                image.UnlockBits( imageData );
                mask.UnlockBits( maskData );
            }
        }