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();
}