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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. XX, NO. Y, MONTH 2001 1 Automatic Segmentation of Moving Objects in
 

Summary: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. XX, NO. Y, MONTH 2001 1
Automatic Segmentation of Moving Objects in
Video Sequences: A Region Labeling Approach
Yaakov Tsaig, Amir Averbuch
Abstract| The emerging video coding standard MPEG-4
enables various content-based functionalities for multimedia
applications. To support such functionalities, as well as to
improve coding eĈciency, MPEG-4 relies on a decomposi-
tion of each frame of an image sequence into video object
planes (VOP's). Each VOP corresponds to a single mov-
ing object in the scene. This paper presents a new method
for automatic segmentation of moving objects in image se-
quences for VOP extraction. We formulate the problem
as graph labeling over a region adjacency graph (RAG),
based on motion information. The label eld is modeled
as a Markov random eld (MRF).
An initial spatial partition of each frame is obtained by a
fast, oating-point based implementation of the watershed
algorithm. The motion of each region is estimated by hi-
erarchical region matching. To avoid inaccuracies in occlu-

  

Source: Averbuch, Amir - School of Computer Science, Tel Aviv University

 

Collections: Computer Technologies and Information Sciences