Nonlocal Sparse and Low-Rank Regularization for Optical Flow Estimation Dong, Weisheng ; Shi, Guangming ; Hu, Xiaocheng ; Ma, Yi Abstract Publication: IEEE Transactions on Image Processing Pub Date: October 2014 DOI: 10.1109/TIP.2014.2352497 Bibcode: 2014ITIP...23.4527D