private void openButton_Click(object sender, EventArgs e)
{
if(openFileDialog1.ShowDialog() == DialogResult.OK) {
bmp = new System.Drawing.Bitmap(openFileDialog1.FileName);
pictureBox1.Image = bmp;
img = new ColorImage(bmp.Height, bmp.Width);
img.LoadFromBitmap(bmp);
}
}
