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Thanks for your reply. We are getting the image of the whole platen in addition to the check image. When you say negotiating the “image layout”, does this mean we need to set a predefined height and width so that the scanner captures only this portion.
Exactly. How you choose to do this depends on how you implement TWAIN in your app. If you were displaying the scanner software user interface, the user would do it, so presumably your application is controlling the scanner directly. If you have got as far as you have, you presumably are not implementing TWAIN directly? So you need to find out more about how your 3rd party implementation of TWAIN deals with image layout.