private void button11_Click(object sender, EventArgs e)
{
if (trackBar2.Value > 255)
{
imageBox2.Image = logic.Plus(sourceImage, null, trackBar2.Value - 255, 1, 1);
}
else
{
imageBox2.Image = logic.Minus(sourceImage, null, trackBar2.Value - 255, 1, 1);
}
}