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In this paper, we propose pyramid appearance and global structure action descriptors on both RGB and depth motion history images and a model-free method for human action recognition. In proposed algorithm, we firstly construct motion history image for both RGB and depth channels, at the same time, depth information is employed to filter RGB information,(More)
Porphyromonas gingivalis is regarded as one of the risk factors of periodontitis. P. gingivalis exhibits a wide variety of genotypes. Many insertion sequences (ISs), located in their chromosomes, made P. gingivalis differentiate into virulent and avirulent strains. In this research, we investigated the prevalence of P. gingivalis in the gingival crevicular(More)
A new method for license plate locating based on multi-feature is introduced in this paper. The method proposed can overcome the shortcoming of early methods based on single feature. At first, the algorithm employs HSV color space to get rid of non-license plate area. Then concomitant color feature, statistical letter frequency and geometry feature are used(More)
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