Saliency detection based on non local neural networks in low contrast images
Saliency detection model has been widely used in many fields of computer vision. Currently, most models are not applicable to the foggy scenario. Because these models are highly dependent upon high level features extracted by deep learning and handcrafted features, these features cannot effectively highlight the significant targets in foggy images. In this paper, we present a saliency detection model for foggy images. This model extracts non local feature, i.e. jointly learned with local features under a unified deep learning framework. The key idea of the proposed model is to hierarchically introduce non local module with local contrast processing blocks, aiming to provide robust representation of saliency information towards foggy images with low signal to noise ratio property. Experiments have been conducted on three challenging datasets and our foggy image dataset consisting of dynamic object images. By comparing with the state of the art models, our model gets better performance.
International Conference on Graphic and Image Processing