Nonlinear smoothing of stereo disparity maps
D.V. Papadimitriou, Tim J. Dennis · Electronics Letters · 1994
The raw disparity maps produced by area-based stereo algorithms are often noisy and blurred. A postprocessing stage can be applied to them in order to improve subsequent 3-D surface reconstruction. An algorithm using nonlinear directional filtering is described. It is applicable to the output of any area-based disparity technique.