摘要：该文给出了一种基于区域的车辆阴影检测方法。首先将运动前景像素检测出来，利用梯度特征分割运动前景的连通域获取投射阴影的方向，然后再结合区域内的角点及灰度相似性特征分割车辆和其阴影像素。实验结果表明该方法可以有效的检测阴影，并且能够满足实时性的要求。
关键词：运动目标检测；阴影检测；阴影消除
中图分类号：TP391文献标识码：A文章编号：1009-3044(2008)36-2709-03
Region-based Vehicle Cast Shadow Elimination Approach
WANG Jing-jing, LUO Li-min
(Image Science and Technology Laboratory, Southeast University, Nanjing 210096, China)
Abstract: A region-based vehicle cast shadow elimination approach was developed. It first identifies each moving object as a blob, then calculates gradient feature and therefore achieves the direction of the cast shadow, and finally uses corner detection and gray similarity to divide vehicle and its shadow. The experimental result indicates that the approach is effective and can process video sequence in real-time.
Key words: moving object detection; shadow detection; shadow elimination
1 引言
交通视频监控技术近年来成为了一个非常活跃的研究领域，快速准确的检测出运动目标成为了运动目标分析和理解的关键。（剩余2187字）