发明名称 |
Dark scene compensation in a background-foreground module of a video analysis system |
摘要 |
Embodiments of the present invention provide a method and a module for identifying a background of a scene depicted in an acquired stream of video frames that may be used by a video-analysis system. For each pixel or block of pixels in an acquired video frame a comparison measure is determined. The comparison measure depends on difference of color values exhibited in the acquired video frame and in a background image respectively by the pixel or block of pixels and a corresponding pixel and block of pixels in the background image. To determine the comparison measure, the resulting difference is considered in relation to a range of possible color values. If the comparison measure is above a dynamically adjusted threshold, the pixel or the block of pixels is classified as a part of the background of the scene.
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申请公布号 |
US8064695(B2) |
申请公布日期 |
2011.11.22 |
申请号 |
US20080129539 |
申请日期 |
2008.05.29 |
申请人 |
EATON JOHN ERIC;COBB WESLEY KENNETH;SAITWAL KISHOR ADINATH;BLYTHE BOBBY ERNEST;BEHAVIORAL RECOGNITION SYSTEMS, INC. |
发明人 |
EATON JOHN ERIC;COBB WESLEY KENNETH;SAITWAL KISHOR ADINATH;BLYTHE BOBBY ERNEST |
分类号 |
G06K9/34;G06K9/00;H04N7/12 |
主分类号 |
G06K9/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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