Cross-Modal Weighting Network for RGB-D Salient Object Detection

• URL: http://arxiv.org/abs/2007.04901v1
• Date: Thu, 9 Jul 2020 16:01:44 GMT
• Title: Cross-Modal Weighting Network for RGB-D Salient Object Detection
• Authors: Gongyang Li, Zhi Liu, Linwei Ye, Yang Wang, Haibin Ling
• Abstract summary: We propose a novel Cross-Modal Weighting (CMW) strategy to encourage comprehensive interactions between RGB and depth channels for RGB-D SOD. Specifically, three RGB-depth interaction modules, named CMW-L, CMW-M and CMW-H, are developed to deal with respectively low-, middle- and high-level cross-modal information fusion. CMWNet consistently outperforms 15 state-of-the-art RGB-D SOD methods on seven popular benchmarks.
• Score: 76.0965123893641
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Depth maps contain geometric clues for assisting Salient Object Detection (SOD). In this paper, we propose a novel Cross-Modal Weighting (CMW) strategy to encourage comprehensive interactions between RGB and depth channels for RGB-D SOD. Specifically, three RGB-depth interaction modules, named CMW-L, CMW-M and CMW-H, are developed to deal with respectively low-, middle- and high-level cross-modal information fusion. These modules use Depth-to-RGB Weighing (DW) and RGB-to-RGB Weighting (RW) to allow rich cross-modal and cross-scale interactions among feature layers generated by different network blocks. To effectively train the proposed Cross-Modal Weighting Network (CMWNet), we design a composite loss function that summarizes the errors between intermediate predictions and ground truth over different scales. With all these novel components working together, CMWNet effectively fuses information from RGB and depth channels, and meanwhile explores object localization and details across scales. Thorough evaluations demonstrate CMWNet consistently outperforms 15 state-of-the-art RGB-D SOD methods on seven popular benchmarks.

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