Shadow Removal Method Based on Illuminant Invariance Image
基于光照无关图的阴影去除方法

To get rid of the interference of shadows when detecting objects,we discussed the theory of illuminant invariance image and its important property first.Based on this theory,a method for removing the casting shadows of objects was proposed.According to optical imaging theory,this method transforms a color image to an illuminant invariance gray-scale image and removes the shadows.To obtain the illuminant invariance image,a camera-dependent illuminant invariance angle should be measured first.Aiming at solving this inconvenient,a histogram-based rule for deciding the illuminant invariance angle was proposed also.A number of experiments results upon different scenes demonstrated that,the proposed method is able to remove the casting shadows effectively and segment the objects accurately.