Hi, I set up the tl_x, tl_y, br_x and br_y, scanned one image and found that there was another layer between the real image and the dark background. It was a rectangle, not of constant grayscale. The scanner is Fujitsu fi-4120c.
Could somebody pls tell me how to get rid of this layer? Since when I scan images using Twain, there is not such a layer. The reason that I want to get rid of the layer is I need to do some edge detection and deskewing. If the background is a constant black (or white), then it would be much easier to implement the algorithm. Thanks, Peter
