ABNORMAL BEHAVIOR DETECTING APPARATUS AND METHOD THEREOF, AND VIDEO MONITORING SYSTEM
First Claim
1. An abnormal behavior detecting apparatus, comprising:
- an extracting device, configured to extract, from a video segment to be detected, an image block sequence containing a plurality of image blocks corresponding to a moving range of an object in each image frame in the video segment;
a feature calculating device, configured to calculate motion vector features of the image block sequence; and
an abnormal behavior detecting device comprising two or more stages of classifiers that are connected in series, wherein the two or more stages of classifiers are configured to receive the image block sequence and the motion vector features stage by stage and detect the abnormal behavior of the object, if a previous stage of classifier determines that the image block sequence contains an abnormal behavior, a next stage of classifier further receives and detects the image block sequence, until last stage of classifier.
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Abstract
The disclosure provides abnormal behavior detecting apparatus and method. The apparatus may include: an extracting device configured to extract, from a video segment to be detected, an image block sequence containing a plurality of image blocks corresponding to a moving range of an object in each image frame in the video segment; a feature calculating device configured to calculate motion vector features of the image block sequence; and an abnormal behavior detecting device comprising two or more stages of classifiers that are connected in series. The classifiers are configured to receive the image block sequence and the motion vector features stage by stage and detect the abnormal behavior of the object. If a previous stage of classifier determines that the to image block sequence contains an abnormal behavior, a next stage of classifier further receives and detects the image block sequence, until last stage of classifier.
21 Citations
20 Claims
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1. An abnormal behavior detecting apparatus, comprising:
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an extracting device, configured to extract, from a video segment to be detected, an image block sequence containing a plurality of image blocks corresponding to a moving range of an object in each image frame in the video segment; a feature calculating device, configured to calculate motion vector features of the image block sequence; and an abnormal behavior detecting device comprising two or more stages of classifiers that are connected in series, wherein the two or more stages of classifiers are configured to receive the image block sequence and the motion vector features stage by stage and detect the abnormal behavior of the object, if a previous stage of classifier determines that the image block sequence contains an abnormal behavior, a next stage of classifier further receives and detects the image block sequence, until last stage of classifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An abnormal behavior detecting method, comprising:
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extracting, from a video segment to be detected, an image block sequence containing a to plurality of image blocks corresponding to a moving range of an object in each image frame in the video segment; calculating motion vector features of the image block sequence; and detecting the image block sequence and the motion vector features by two or more stages of classifiers that are connected in series stage by stage, wherein the two or more stages of classifiers are configured to receive the image block sequence and the motion vector features stage by stage and detect the abnormal behavior of the object, if a previous stage of classifier determines that the image block sequence contains an abnormal behavior, a next stage of classifier further receives and detects the image block sequence, until last stage of classifier. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A video monitoring system, comprising:
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a video collecting device, configured to capture a video of a monitored scenario; and an abnormal behavior detecting apparatus configured to detect an abnormal behavior of an object in the video and comprising; an extracting device, configured to extract, from a video segment to be detected, an image to block sequence containing a plurality of image blocks corresponding to a moving range of an object in each image frame in the video segment; a feature calculating device, configured to calculate motion vector features of the image block sequence; and an abnormal behavior detecting device comprising two or more stages of classifiers that are connected in series, wherein the two or more stages of classifiers are configured to receive the image block sequence and the motion vector features stage by stage and detect the abnormal behavior of the object, if a previous stage of classifier determines that the image block sequence contains an abnormal behavior, a next stage of classifier further receives and detects the image block sequence, until last stage of classifier.
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19. A program product, comprising program codes which, when loaded into a memory of a computer and executed by a processor of the computer, cause the processor to perform the following steps of:
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extracting, from a video segment to be detected, an image block sequence containing a plurality of image blocks corresponding to a moving range of an object in each image frame in the video segment; calculating motion vector features of the image block sequence; and detecting the image block sequence and the motion vector features by two or more stages of classifiers that are connected in series stage by stage, wherein the two or more stages of classifiers are configured to receive the image block sequence and the motion vector features stage by stage and detect the abnormal behavior of the object, if a previous stage of classifier determines that the image block sequence contains an abnormal behavior, a next stage of classifier further receives and detects the image block sequence, until last stage of classifier.
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20. A recording medium, that stores program codes which, when loaded into a memory of a computer and executed by a processor of the computer, cause the processor to perform the following steps of:
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extracting, from a video segment to be detected, an image block sequence containing a plurality of image blocks corresponding to a moving range of an object in each image frame in the video segment; calculating motion vector features of the image block sequence; and detecting the image block sequence and the motion vector features by two or more stages of classifiers that are connected in series stage by stage, wherein the two or more stages of classifiers are configured to receive the image block sequence and the motion vector features stage by stage and detect the abnormal behavior of the object, if a previous stage of classifier determines that the image block sequence contains an abnormal behavior, a next stage of classifier further receives and detects the image block sequence, until last stage of classifier.
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Specification