计算机科学 ›› 2014, Vol. 41 ›› Issue (3): 293-296.
向金海,廖红虹,樊恒,代江华,孙伟平,余胜生
XIANG Jin-hai,LIAO Hong-hong,FAN Heng,DAI Jiang-hua,SUN Wei-ping and YU Sheng-sheng
摘要： 对运动的真实前景目标进行实时提取是监控视频中的一个基本步骤。在前景提取过程中,阴影消除一直是一个较难解决的问题。为解决此问题,根据光照模型提出了局部强度比率模型,并证明其具有光照不变性特征。同时证明,如果视频图像噪声高斯分布,则局部强度比率也满足高斯分布。在通过高斯混合模型获取前景的过程中,用局部强度比率代替像素值进行处理,得到消除阴影后的前景。实验表明,本方法在不同的场景下可以有效地消除阴影,得到无阴影的前景,同其他方法比较,显示出较好的性能。
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