Local Context Attention for Salient Object Segmentation
Jing Tan (Megvii(face++) Research), Pengfei Xiong (Megvii(face++) Research)*, Zhengyi Lv (Megvii(face++) Research), Kuntao Xiao (Megvii(face++) Research), Yuwen He (Megvii(face++) Research)
Keywords: Segmentation and Grouping
                Abstract:
                Salient  object segmentation aims at distinguishing various salient objects from  backgrounds. Despite the lack of semantic consistency, salient objects often  have obvious texture and location characteristics in local area. Based on  this priori, we propose a novel Local Context Attention Network (LCANet) to  generate locally reinforcement feature maps in a uniform representational  architecture. The proposed network introduces an Attentional Correlation  Filter (ACF) module to generate explicit local attention by calculating the  correlation feature map between coarse prediction and global context. Then it  is expanded to a Local Context Block(LCB). Furthermore, a one-stage  coarse-to-fine structure is implemented based on LCB to adaptively enhance  the local context description ability. Comprehensive experiments are  conducted on several salient object segmentation datasets, demonstrating the  superior performance of the proposed LCANet against the state-of-the-art  methods, especially with 0.883 max F-score and 0.034 MAE on DUTS-TE dataset.
            
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