Hi, all
   The following is what I want to do:
   Suppose I put a radar in the camera position. Because the radar emit the
electromagnetic wave, so it also likes a light source. I want the data back
to the radar, that is to say, the camera position. I think that this is the
same data which I can see by render some pov file(output image data,right?)
if I put camera and light source in the same position. But I am not familar
with this huge program. So please tell me where can I find the output
imagine data?

Thanks a lot
Wu Yang

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