发明名称 |
Method for modeling cast shadows in videos |
摘要 |
A method models a scene. A video is acquired of the scene, and for each frame of the video, the method updates a set of background models for each pixel; a set of shadow models for each pixel; a set of shadow flow vectors for each color; and a background shadow map. Each pixel in each background model and each shadow model is represented by multiple layers. Each layer includes Gaussian distributions and each Gaussian distribution includes a mean and a covariance. The covariance is an inverse Wishart distribution and the updating is according to a recursive Bayesian estimation process. |
申请公布号 |
US7574043(B2) |
申请公布日期 |
2009.08.11 |
申请号 |
US20050167611 |
申请日期 |
2005.06.27 |
申请人 |
MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC. |
发明人 |
PORIKLI FATIH M. |
分类号 |
G06K9/40;G06K9/00;G06K9/34;G06K9/36 |
主分类号 |
G06K9/40 |
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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