The optical geometry of two adjacent detectors in the focal plane of a scanning millimeter wave imaging system is similar to that of a stereo camera with optical axes of two component cameras which are diverging radially. The perceived image characteristics of the diverging-type stereo camera are analyzed, and they are compared with those of other camera arrangements, such as parallel- and radially converging-types. The distortions induce the image closer to the viewers for the diverging-type while away for the converging. The inducement is more prominent as the camera distance between two component cameras of the stereo camera, especially for the diverging-type.
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