历史上阴影检测算法的归纳总结，对初学和使用阴影检测很有帮助- The history of the shadow detection algorithm summary of the learning and use of shadow detection very helpful

主要功能是车辆定位，阴影检测，对于高速公路的照片处理 ，适合于阴影比较多的图像-The first function is to the car,detect the shade ,deal with the picture which on the highway.the picture have some shade.