Nonlinear Regression of Saliency Guided Proposals for Unsupervised Segmentation of Dynamic Scenes

Yinhui ZHANG, Mohamed ABDEL-MOTTALEB, Zifen HE

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Summary :

This paper proposes an efficient video object segmentation approach that is tolerant to complex scene dynamics. Unlike existing approaches that rely on estimating object-like proposals on an intra-frame basis, the proposed approach employs temporally consistent foreground hypothesis using nonlinear regression of saliency guided proposals across a video sequence. For this purpose, we first generate salient foreground proposals at superpixel level by leveraging a saliency signature in the discrete cosine transform domain. We propose to use a random forest based nonlinear regression scheme to learn both appearance and shape features from salient foreground regions in all frames of a sequence. Availability of such features can help rank every foreground proposals of a sequence, and we show that the regions with high ranking scores are well correlated with semantic foreground objects in dynamic scenes. Subsequently, we utilize a Markov Random Field to integrate both appearance and motion coherence of the top-ranked object proposals. A temporal nonlinear regressor for generating salient object support regions significantly improves the segmentation performance compared to using only per-frame objectness cues. Extensive experiments on challenging real-world video sequences are performed to validate the feasibility and superiority of the proposed approach for addressing dynamic scene segmentation.

Publication
IEICE TRANSACTIONS on Information Vol.E99-D No.2 pp.467-474
Publication Date
2016/02/01
Publicized
2015/11/06
Online ISSN
1745-1361
DOI
10.1587/transinf.2015EDP7295
Type of Manuscript
PAPER
Category
Image Processing and Video Processing

Authors

Yinhui ZHANG
  Kunming University of Science and Technology
Mohamed ABDEL-MOTTALEB
  University of Miami,Effat University
Zifen HE
  Kunming University of Science and Technology

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