3d picture pixel coordinates

Hi,
I have a problem I can't figure out on my own. Maybe its not even possible.
I want to import a 3D file (e.g. VRML) and read out the coordinates of each pixel. I just found tools to handle the image but not to get information out of the image.
Maybe it is not possible the way I try to do it right now. What I want is a program that can read a 3D file and gives me a transmission image of it. (like if I get an transmission electron microscopy image of an object)
This is to compare a theoretical transmission of an object to the real one.
I hope you understand what I am trying to say.
regards
T

Hi Raphi,
sorry for my late reply. Thank you for the example, I hope it wasn't a lot of work.
To get a 2d projection of just the surface isn't my problem. I could also do that with the program I created the 3D file in. What I need are transmission pictures of the object. English is not my native language and I think my explanation is not really exact. I will try to explain on an example.
What I want is a transmission picture of e.g. two cylinders. In the 2D view you will see them crossing in one point. In the transmission images this crossing point would have a higher intensity than the others because there are two cylinders. If one of the cylinders would be filled and the other would be hollow the they would look the same in a 2d projection picture but they would look different in a 2d transmission picture. I hope you understand that I mean.
I want to load a 3d object and then integrate layer for layer of the object to get one transmission picture. This is to simulate how a object would look in a transmission electron microscope.
regards,
T

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Attachments:
Capture.PNG ‏8 KB
Capture1.PNG ‏5 KB

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3d picture pixel coordinate​s

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3d picture pixel coordinates