Sample PDF Color based on Coordinates

Hello all-
First off I would like to apologize if this discussion is in the wrong forum, and I welcome a correct link to where I should be posting this.
I am doing some software development for a local company and they are wanting a program that can analyze OMR scans that are saved as PDF files. I have searched through the Acrobat SDK API and I am unable to find anything that is helpful. We are designing the program in Visual C++ and are hoping to look for a solution to the problem we are having.
I did read in the reference manual for PDFs (Version 1.7) that there are various coordinate systems that are found within a PDF file. I imagine there is some way to access these coordinate system and pull the RGB values from that area in the file. I need to basically tell if the area is white or black, not necessarily all the colors of the rainbow.
I am sorry I do not have any code available, as this is a new project and I am just trying to get a concept on how I will go about solving this problem.
Thanks for all of the responses and again, please let me know if I am in the wrong forum.
-Mojave Storm

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Message was edited by: Barry

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Sample PDF Color based on Coordinates

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