FCN Salient Object Detection Using Region Cropping

An important issue in salient object detection is how to improve the result of saliency map for the reason that it is the basis of many subsequent operations in computer vision. In this paper, we propose a region-based salient object detection model using fully convolutional neural network (FCN) with traditional visual saliency method. We introduce the region cropping and jumping operation into FCN network for a more target-oriented feature extraction, which is a low-level cue based processing. It processes the training images into patches of various sizes and makes these patches jump to convolutional layers with corresponding depths as their input data in training. This operation can preserve the main structure of objects while decrease the background redundancy. In the meantime, it also takes into account topological property, which emphasizes the topological integrity of objects. Experimental results on four datasets show that the proposed model performs effectively on salient object detection compared with other ten approaches, including state-of-the-art ones.