@inproceedings{6d7024902022404395dc499fa200b54b,
title = "Pixel matching and motion segmentation in image sequences",
abstract = "This paper presents a coarse-to-fine algorithm to obtain pixel trajectories in a long image sequence and to segment it into subsets corresponding to distinctly moving objects. Much of the previous related work has addressed the computation of optical flow over two frames or sparse feature trajectories in sequences. The features used are often small in number and restrictive assumptions are made about them such as the visibility of features in all the frames. The algorithm described here uses a coarse scale point feature detector to form a 3-D dot pattern in the spatio temporal space. The trajectories are extracted as 3-D curves-formed by the points using perceptual grouping. Increasingly dense correspondences are obtained iteratively from the sparse feature trajectories. At the finest level, which is the focus of this paper, all pixels are matched and the finest boundaries of the moving objects are obtained.",
keywords = "Feature matching, Motion segmentation, Optical flow, Perceptual grouping, Pixel matching, Triangulation",
author = "Narendra Ahuja and Ram Charan",
note = "Publisher Copyright: {\textcopyright} Springer-Verlag Berlin Heidelberg 1996.; 2nd Asian Conference on Computer Vision, ACCV 1995 ; Conference date: 05-12-1995 Through 08-12-1995",
year = "1996",
doi = "10.1007/3-540-60793-5_69",
language = "English (US)",
isbn = "9783540607939",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer",
pages = "139--148",
editor = "Li, {Stan Z.} and Mital, {Dinesh P.} and Teoh, {Eam Khwang} and Han Wan",
booktitle = "Recent Developments in Computer Vision - 2nd Asian Conference on Computer Vision, ACCV 1995, Invited Session Papers",
address = "Germany",
}