Co-occurrence Features for Writer Identification

In this paper, we propose two novel textural-based features for writer identification: CoHinge and QuadHinge which are based on the spatial and attribute co-occurrence of the Hinge kernel. The CoHinge feature is the joint distribution of the Hinge kernel on two different pixels of writing contours and the QuadHinge feature is the joint distribution of angles and curvature information of contour fragments. We evaluate the proposed features on five benchmark data sets and their combined large set and the experimental results demonstrate the discriminative and powerful of the proposed features.