Fast motion compensation algorithm for video sequences with local brightness variations
Sang Hyun Kim, Rae‐Hong Park · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2000
In this paper, a fast motion compensation algorithm is proposed that improves coding efficiency for video sequences with brightness variations. We also propose a cross entropy measure between histograms of two frames to detect brightness variations. The framewise brightness variation parameters, a multiplier and an offset field for image intensity, are estimated and compensated. Simulation results show that the proposed method yields a higher peak signal to noise ratio compared with the conventional method, with a greatly reduced computational load, when the video scene contains illumination changes.