private void UpdateCanvas()
        {
            Bitmap     dstImage = new Bitmap(srcImage.Width, srcImage.Height);
            Adjustment a        = new Adjustment();

            dstImage = a.ColorBalance((Bitmap)srcImage.Clone(), this.Red, this.Green, this.Blue);
            this.panel1.BackgroundImage = dstImage;
            this.finalImage             = (Bitmap)dstImage.Clone();
        }