CONCEPT FOR DETERMINING A CONFIDENCE/UNCERTAINTY MEASURE FOR DISPARITY MEASUREMENT

摘要

A more effective confidence/uncertainty measure determination for disparity measurements is achieved by performing the determination on an evaluation of a set of disparity candidates for a predetermined position of a first picture at which the measurement of the disparity relative to the second picture is to be performed, and if this evaluation involves an accumulation of a contribution value for each of this set of disparity candidates, which contribution values depends on the respective disparity candidate and a dissimilarity to the second picture which is associated with the respective disparity candidate according to a function which has a first monotonicity with a dissimilarity associated with the respective disparity candidate, and a second monotonicity, opposite to the first monotonicity, with an absolute difference between the respective disparity candidate and a predetermined disparity having a minimum dissimilarity associated therewith among dissimilarities associated with the set of disparity candidates. By this means, the confidence/uncertainty measure tends to decrease the confidence, and increase the uncertainty, with increasing number of local minima in the spatial distribution of disparity candidates. Further, the larger the disparity distance of any local minimum to the global minimum in terms of disparity is, the lower the confidence and the higher the uncertainty, respectively, tends to be. Further, the larger the distance of any local minimum to the global minimum in terms of dissimilarity is, the lower is its influence of the confidence/uncertainty measure determination.