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This paper proposes an approach to extract motion features from sequences of images of human behavior.A novel algorithm called two-dimensional continuous dynamic programming (2DCDP) is proposed, which can obtain a set of correspondence data for all pixels between sequential images.The 2DCDP algorithm performs segmentation-free detection of objects in an input image from representations in reference...
This paper proposes a new data hiding scheme based on covering code in process of producing halftone images. The scheme is mainly to do error diffusion in gray-level images beforehand, and produce the fixed length sequence of the halftoning binary code according to the rule of covering code. Then, after embedding secret data in the binary code, the gray-level images renew to do the error diffusion...
Video key frame extraction is a type of video abstraction, which is one of the key problems in video content indexing and retrieval. Key frame extraction aims at finding a small collection of salient images extracted from a video sequence for visual content summarization. In this paper we propose a video key frame extraction method based on spatial-temporal color distribution. First we construct a...
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