Question

I’m designing interface with visual c# for my image processing project. I need point selection on an image and classification these points for using in my image processing code at vhdl.

Original image will stay at a picturebox and I will use selected image in another picturebox.

How I can select points on an image?

Answer 1

If you need to get pixel color and coord when mouse is down over picturebox, you could use

private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
    PictureBox pb = (PictureBox)sender;
    Bitmap bmp = (Bitmap)pb.Image;
    Color col = bmp.GetPixel(e.X, e.Y);
    // Do what you please with pixel coord and color
}