Abnormal motion detection method and device

The application provides an abnormal motion detection method and device. The method comprises the steps that foreground objects in a monitoring video are detected according to depth information; depth difference of the foreground objects between adjacent frames is calculated so that depth difference...

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Bibliographic Details
Main Authors SHEN HAOQUAN, ZHAO YONG
Format Patent
LanguageEnglish
Published 26.08.2015
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:The application provides an abnormal motion detection method and device. The method comprises the steps that foreground objects in a monitoring video are detected according to depth information; depth difference of the foreground objects between adjacent frames is calculated so that depth difference images are obtained; continuous multiple frames of depth difference images are calculated so that polymerized depth difference images are obtained; features of a histogram of oriented gradients HOG are calculated according to the polymerized depth difference images; and abnormal motions corresponding to the HOG features are predicted by a support vector machine SVM classifier with well grained abnormal motions, and whether the abnormal motions occur on the foreground objects is confirmed according to the prediction result. According to the scheme of the embodiment of the application, the foreground objects in the monitoring video are detected according to the depth information so that people with different distances to a lens of the same position in the frame can be accurately separated, and thus the abnormal motions of each person in the scene can be accurately judged.
Bibliography:Application Number: CN201510279178