supported by National Natural Science Foundation of China (Grant No. 60372071);Natural Science Foundation of Liaoning Province (Grant No. 20102123);Liaoning BaiQian Wan Talents Program (Grant No.2008921036);the Open Subject of State Key Laboratory for Novel Software Technology,Nanjing University(Grant No. KFKT2011B09)
According to Shanno's information theory, the directional feature of texture is defined as the value of directional variable when an image signal attains a singularity of random distribution. In terms of this definit...