In order to solve this problem, a method for shadow detection was presented firstly. Furthermore, a fuzzy Retinex algorithm, which adapts for the illuminant variation, was put forward.

• 为解决这一问题，本章提出了一种阴影检测的方法，并在此基础上，提出了一种能适应影像光照强度变化的模糊Retinex算法。