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Erschienen in:
2008 | OriginalPaper | Buchkapitel
A Pose-Invariant Descriptor for Human Detection and Segmentation
verfasst von : Zhe Lin, Larry S. Davis
Erschienen in: Computer Vision – ECCV 2008
Verlag: Springer Berlin Heidelberg
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We present a learning-based, sliding window-style approach for the problem of detecting humans in still images. Instead of traditional concatenation-style image location-based feature encoding, a global descriptor more invariant to pose variation is introduced. Specifically, we propose a principled approach to learning and classifying human/non-human image patterns by simultaneously segmenting human shapes and poses, and extracting articulation-insensitive features. The shapes and poses are segmented by an efficient, probabilistic hierarchical part-template matching algorithm, and the features are collected in the context of poses by tracing around the estimated shape boundaries. Histograms of oriented gradients are used as a source of low-level features from which our pose-invariant descriptors are computed, and kernel SVMs are adopted as the test classifiers. We evaluate our detection and segmentation approach on two public pedestrian datasets.