SiaTrans: Siamese Transformer Network for RGB-D Salient Object Detection with Depth Image Classification

• URL: http://arxiv.org/abs/2207.04224v1
• Date: Sat, 9 Jul 2022 08:22:12 GMT
• Title: SiaTrans: Siamese Transformer Network for RGB-D Salient Object Detection with Depth Image Classification
• Authors: Xingzhao Jia and Dongye Changlei and Yanjun Peng
• Abstract summary: A novel RGB-D salient object detection model (SiaTrans) is proposed in this paper. SiaTrans allows training on depth image quality classification at the same time as training on RGB-D saliency maps. Experiments on nine RGB-D SOD benchmark datasets show that SiaTrans has the best overall performance and the least compared with recent state-of-the-art methods.
• Score: 2.578242050187029
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: RGB-D SOD uses depth information to handle challenging scenes and obtain high-quality saliency maps. Existing state-of-the-art RGB-D saliency detection methods overwhelmingly rely on the strategy of directly fusing depth information. Although these methods improve the accuracy of saliency prediction through various cross-modality fusion strategies, misinformation provided by some poor-quality depth images can affect the saliency prediction result. To address this issue, a novel RGB-D salient object detection model (SiaTrans) is proposed in this paper, which allows training on depth image quality classification at the same time as training on SOD. In light of the common information between RGB and depth images on salient objects, SiaTrans uses a Siamese transformer network with shared weight parameters as the encoder and extracts RGB and depth features concatenated on the batch dimension, saving space resources without compromising performance. SiaTrans uses the Class token in the backbone network (T2T-ViT) to classify the quality of depth images without preventing the token sequence from going on with the saliency detection task. Transformer-based cross-modality fusion module (CMF) can effectively fuse RGB and depth information. And in the testing process, CMF can choose to fuse cross-modality information or enhance RGB information according to the quality classification signal of the depth image. The greatest benefit of our designed CMF and decoder is that they maintain the consistency of RGB and RGB-D information decoding: SiaTrans decodes RGB-D or RGB information under the same model parameters according to the classification signal during testing. Comprehensive experiments on nine RGB-D SOD benchmark datasets show that SiaTrans has the best overall performance and the least computation compared with recent state-of-the-art methods.

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