LIU Li-wei, XUE Chun-fang, ZHANG Hong-mei etc. Recognition of human tumbles based on improved normalized inertia moment[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 312-317
LIU Li-wei, XUE Chun-fang, ZHANG Hong-mei etc. Recognition of human tumbles based on improved normalized inertia moment[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 312-317 DOI: 10.3788/OPE.20172513.0312.
Recognition of human tumbles based on improved normalized inertia moment
In order to detect human tumble behavior in videos quickly and accurately
an improved Normalized Moment of Inertia (NMI) feature extraction algorithm was proposed
which used the idea of SURF to structure feature retrieve
and combine SURF with NMI to calculate the NMI values. Taking the feature points with the closet NMI values in the two images of video as the matching points
the total of matching points were calculated between the two images. Moreover
the number of the feature points was compared with the minimum of feature points in a tumble video
thus judging whether a tumble behavior has happened or not. The results show that accuracy rate of this improved NMI algorithm runs up to 96%
and the average recognition time is 0.138 s
which is faster than other algorithms. The algorithm occupies a little internal storage and detects quickly and accurately
which is a feasible and effective approach to detect human actions.
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references
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