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V-REP models vision sensors’ fields of vision as frusta – i.e., V-REP
assumes the camera’s field of view terminates in a plane whose points
are generally not equidistant from the aperture. Unfortunately, most
humans think of a camera’s field of view terminating in a paraboloid.
Thus, to the human brain, the raw depth buffer V-REP returns appears
distorted. This commit fixes that by getting depth data from a filter,
rather than the raw depth buffer; this causes V-REP to perform
correction on the data.
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