Abstract:

Imaging essence was studied and compared between OpenGL  and a real camera, which proved that  the rendering result of OpenGL was in theory in accordance with imagery of a real camera. A camera imaging simulation platform was built to get the check board image by previously setting the intrinsic parameters, then the parameters of a virtual camera was computed with a calibration toolbox. Experimental  results showed that two sets of parameter were nearly the same, which indirectly proves the theory right. It was learned that the process of camera imaging by the platform was without disturbance  coming from any other elements. The theory and system can be used to verify the algorithm in a vision system such as calibration, stereo match, and distortion rectification.

Key words: camera, OpenGL, imaging simulation, perspective projection