There has been increasing interest in computer analysis and recognition of human motion. Previously we presented an efficient real-time approach for representing human motion using a compact "motion history image" (MHI). Recognition was achieved by statistically matching moment-based features. To address previous problems related to global analysis and limited recognition, we present a hierarchical extension to the original MHI framework to compute dense (local) motion flow directly from the MHI. A hierarchical partitioning of motions by speed in an MHI pyramid enables efficient calculation of image motions using fixed-size gradient operators. To characterize the resulting motion field, a polar histogram of motion orientations is described. The hierarchical MHI approach remains a computationally inexpensive method for analysis of human motions.


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    Title :

    Hierarchical motion history images for recognizing human motion


    Contributors:
    Davis, J.W. (author)


    Publication date :

    2001-01-01


    Size :

    718936 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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