基于阴影向量扩展的阴影检测方法

图像处理中阴影检测是一个重要的主题。本文提出了一种基于阴影向量扩展的阴影检测新方法。该方法依据阴影区域的光学特性，先找出前景中能够表达阴影区域主要特征的阴影向量，再根据阴影向量扩展出整个阴影区域。测试图库的实验结果表明该方法能有效的检测出前景中的阴影，并且改善了传统方法在强阴影识别方面的缺陷，以及常常把目标局部误识别为阴影的问题。

Shadow detection method based on shadow vector extension

Shadow detection is an important topic in image processing.This paper proposes a new method of Shadow detection method that based on shadow vector extension.According to the optical properties of the shaded region , The method firstly find out the shadow vectors that can express the main characteristics of the shaded region in the foreground ,and then extend the entire shaded region with the shadow vectors. The experimental results from test galleries show that the method can effectively detect the shadow in the foreground, and improve the defect of traditional methods in strong shadow recognition and the problem that often mistakenly identified the part of the object region into shadow.