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Learning Motion Patterns in Videos

Open access
Tokmakov, Pavel, Alahari, Karteek, Schmid, Cordelia·2017·2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)

Abstract

The problem of determining whether an object is in motion, irrespective of camera motion, is far from being solved. We address this challenging task by learning motion patterns in videos. The core of our approach is a fully convolutional network, which is learned entirely from synthetic video sequences, and their ground-truth optical flow and motion segmentation. This encoder-decoder style architecture first learns a coarse representation of the optical flow field features, and then refines it iteratively to produce motion labels at the original high-resolution. We further improve this labeling with an objectness map and a conditional random field, to account for errors in optical flow, and also to focus on moving things rather than stuff. The output label of each pixel denotes whether it has undergone independent motion, i.e., irrespective of camera motion. We demonstrate the benefits of this learning framework on the moving object segmentation task, where the goal is to segment all objects in motion. Our approach outperforms the top method on the recently released DAVIS benchmark dataset, comprising real-world sequences, by 5.6%. We also evaluate on the Berkeley motion segmentation database, achieving state-of-the-art results.

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Crossref · 10.1109/cvpr.2017.64

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Metadata

Authors
Tokmakov, P., Alahari, K., & Schmid, C.
Venue
2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
Publisher
IEEE
Published
2017-07
Pages
531-539
ISSN
1063-6919 (ISSN-L)
OpenAlex
W2566030665
Cited by
267
References
44
FWCI
11.57
Type
conference paper
Language
en
Open access
green

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