Region saliency detection via multi-feature on absorbing Markov chain

Saliency region detection plays an important role in image pre-processing, and uniformly emphasizing saliency region is still an intractable problem in computer vision. In this paper, we present a data-driven salient region detection method via multi-feature (included contrast, spatial relationship and background prior, etc.) on absorbing Markov chain, which uses super pixel to extract salient regions, and each super-pixel represents a node. In detail, we first construct function to calculate absorption probability of each node on absorbing Markov chain. Second we utilize image contrast and space relation to model the prior salient map which is provided to foreground salient nodes and then calculate the saliency of nodes based on absorption probability. Third, we also exploit background prior to supply the absorbing nodes and compute the saliency of nodes. Finally, we fuse both the saliency of nodes by cosine similarity measurement method and acquire the ultimate saliency map. Our approach is simple and efficient and highlights not only a single object but also multiple objects consistently. We test the proposed method on MSRA-B, iCoSeg and SED databases. Experimental results illustrate that the proposed approach presents better robustness and efficiency against the eleven state-of-the art algorithms.