Resolution limitations and error analysis for stereo camera models

The left-right model and the motion-in-depth model are examined. Although lower and upper bounds in a correspondence procedure have been determined for both stereo camera models, the analysis for deriving such bounds assumes the continuous case. In practice, however, additional limitations exist due to the discrete nature of the stereoscopic systems. Such limitations include depth of scene restrictions so that three-dimensional vision is meaningful (i.e. maximum depth for which disparity is nonzero). An error analysis for both stereo camera models is presented, where it is shown that the error in calculating depth (as a function of the camera displacement) decreases at a faster rate in the motion-in-depth case than the left-right one