3-D Head Tracking via Invariant Keypoint Learning
3-D Head Tracking via Invariant Keypoint Learning
复制标题
通过不变关键点学习进行 3D 头部跟踪
DOI:
10.1109/tcsvt.2012.2190474
复制
发表时间:
2012-08
影响因子:
8.4
通讯作者:
Pan, Chunhong
中科院分区:
文献类型:
--
作者:
Davoine, Franck;Lepetit, Vincent;Chaillou, Christophe;Pan, Chunhong
Keypoint matching is a standard tool to solve the correspondence problem in vision applications. However, in 3-D face tracking, this approach is often deficient because the human face complexities, together with its rich viewpoint, nonrigid expression, and lighting variations in typical applications, can cause many variations impossible to handle by existing keypoint detectors and descriptors. In this paper, we propose a new approach to tailor keypoint matching to track the 3-D pose of the user head in a video stream. The core idea is to learn keypoints that are explicitly invariant to these challenging transformations. First, we select keypoints that are stable under randomly drawn small viewpoints, nonrigid deformations, and illumination changes. Then, we treat keypoint descriptor learning at different large angles as an incremental scheme to learn discriminative descriptors. At matching time, to reduce the ratio of outlier correspondences, we use second-order color information to prune keypoints unlikely to lie on the face. Moreover, we integrate optical flow correspondences in an adaptive way to remove motion jitter efficiently. Extensive experiments show that the proposed approach can lead to fast, robust, and accurate 3-D head tracking results even under very challenging scenarios.
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DOI:
10.1109/afgr.1996.557294
发表时间:
1996-10
期刊:
Proceedings of the Second International Conference on Automatic Face and Gesture Recognition
影响因子:
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作者:
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发表时间:
2002-05
期刊:
Image Vis. Comput.
影响因子:
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通讯作者:
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DOI:
10.1007/978-3-642-15555-0_36
发表时间:
2010-09
期刊:
--
影响因子:
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作者:
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通讯作者:
Minsu Cho;Jungmin Lee;Kyoung Mu Lee