caa a22 4500 467915105 CHVBK 20180406152859.0 cr unu---uuuuu 170328e20060601xx s 000 0 eng 10.1007/s11263-005-6206-0 doi (NATIONALLICENCE)springer-10.1007/s11263-005-6206-0 Piecewise-Smooth Dense Optical Flow via Level Sets [Elektronische Daten] [T. Amiaz, N. Kiryati] We propose a new algorithm for dense optical flow computation. Dense optical flow schemes are challenged by the presence of motion discontinuities. In state of the art optical flow methods, over-smoothing of flow discontinuities accounts for most of the error. A breakthrough in the performance of optical flow computation has recently been achieved by Brox et~al. Our algorithm embeds their functional within a two phase active contour segmentation framework. Piecewise-smooth flow fields are accommodated and flow boundaries are crisp. Experimental results show the superiority of our algorithm with respect to alternative techniques. We also study a special case of optical flow computation, in which the camera is static. In this case we utilize a known background image to separate the moving elements in the sequence from the static elements. Tests with challenging real world sequences demonstrate the performance gains made possible by incorporating the static camera assumption in our algorithm. Springer Science + Business Media, LLC, 2006 Optical flow nationallicence piecewise-smoothness nationallicence level-sets nationallicence variational methods nationallicence Amiaz T. School of Electrical Engineering, Tel Aviv University, 69978, Tel Aviv, Israel aut Kiryati N. School of Electrical Engineering, Tel Aviv University, 69978, Tel Aviv, Israel aut International Journal of Computer Vision Kluwer Academic Publishers 68/2(2006-06-01), 111-124 0920-5691 68:2<111 2006 68 11263 https://doi.org/10.1007/s11263-005-6206-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11263-005-6206-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Amiaz T. School of Electrical Engineering, Tel Aviv University, 69978, Tel Aviv, Israel aut NATIONALLICENCE 700 1- Kiryati N. School of Electrical Engineering, Tel Aviv University, 69978, Tel Aviv, Israel aut NATIONALLICENCE 773 0- International Journal of Computer Vision Kluwer Academic Publishers 68/2(2006-06-01), 111-124 0920-5691 68:2<111 2006 68 11263 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer