Shadow Detection Method with Color Correlation and Texture Difference
LI Hana · Jisuanji gongcheng · 2011
In rainy highway environment,segmentation of vehicle is disturbed by both cast shadow and the water tailing region.For solving this problem,on the analysis of the characteristics of target vehicle,road,shadow and water vapor trailing area,this paper presents a shadow detection method based on color correlation and texture difference.Color correlation is estimated between current pixel and background pixel through dot product of Hue,Saturation,Intensity(HIS) vectors to detect vehicle object and water tailing region.The texture difference based on gradient of current region and background region is calculated to distinguish dark vehicle from cast shadow.Experimental results show that this method can effectively eliminate both the cast shadow and the water tailing region of moving vehicles in rainy highway video,it can ensure the accurate segmentation of vehicle objects.