Analysis of 2-D occlusion by subtracting out
Julian R. Ullmann · IEEE Transactions on Pattern Analysis and Machine Intelligence · 1992
A provably correct polynomial-time algorithm for complete systematic analysis of occlusion in synthetically generated noise-free pictures of 2-D objects is introduced. The algorithm first recognizes occluding objects and then ignores the mismatch with pixels in occluding objects while recognizing occluded objects by template matching.>