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- W3203036314 abstract "Weakly Supervised Semantic Segmentation (WSSS) based on image-level labels has been greatly advanced by exploiting the outputs of Class Activation Map (CAM) to generate the pseudo labels for semantic segmentation. However, CAM merely discovers seeds from a small number of regions, which may be insufficient to serve as pseudo masks for semantic segmentation. In this paper, we formulate the expansion of object regions in CAM as an increase in information. From the perspective of information theory, we propose a novel Complementary Patch (CP) Representation and prove that the information of the sum of the CAMs by a pair of input images with complementary hidden (patched) parts, namely CP Pair, is greater than or equal to the information of the baseline CAM. Therefore, a CAM with more information related to object seeds can be obtained by narrowing down the gap between the sum of CAMs generated by the CP Pair and the original CAM. We propose a CP Network (CPN) implemented by a triplet network and three regularization functions. To further improve the quality of the CAMs, we propose a Pixel-Region Correlation Module (PRCM) to augment the contextual in-formation by using object-region relations between the feature maps and the CAMs. Experimental results on the PAS-CAL VOC 2012 datasets show that our proposed method achieves a new state-of-the-art in WSSS, validating the effectiveness of our CP Representation and CPN." @default.
- W3203036314 created "2021-10-11" @default.
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- W3203036314 date "2021-10-01" @default.
- W3203036314 modified "2023-10-18" @default.
- W3203036314 title "Complementary Patch for Weakly Supervised Semantic Segmentation" @default.
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- W3203036314 doi "https://doi.org/10.1109/iccv48922.2021.00715" @default.
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