视频监控系统中阴影去除方法的研究

提出了一种基于颜色不变性和建立阴影高斯模型的阴影检测和消除的方法。首先对亮度小于背景的前景根据颜色特征的相近性进行划分，再利用阴影的光谱特性建立高斯模型，去除运动目标的投影。最后利用阴影的空间特性对图像进行后处理，完成阴影的检测与消除。实验结果表明，该方法能够有效地检测和消除阴影。

Shadow removal in video surveillance

A new approach for shadow detection and elimination based on color invariants and Gaussian shadow model is pre- sented in this paper.First authors extract and classify uniform-region,and then create a single Gaussian model for cast shadow,re- move the cast shadow based on the Gaussian model and uniform-region.At last,this result is improved using spatial analysis.The results illustrate that the approach is efficient when handling widely different conditions that can occur.