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DLGRAFE-Net: A double loss guided residual attention and feature enhancement network for polyp segmentation
Date
2024
Abstract
Colon polyps represent a common gastrointestinal form. In order to effectively treat and prevent complications arising from colon polyps, colon polypectomy has become a commonly used therapeutic approach. Accurately segmenting polyps from colonoscopy images can provide valuable information for early diagnosis and treatment. Due to challenges posed by illumination and contrast variations, noise and artifacts, as well as variations in polyp size and blurred boundaries in polyp images, the robustness of segmentation algorithms is a significant concern. To address these issues, this paper proposes a Double Loss Guided Residual Attention and Feature Enhancement Network (DLGRAFE-Net) for polyp segmentation. Firstly, a newly designed Semantic and Spatial Information Aggregation (SSIA) module is used to extract and fuse edge information from low-level feature graphs and semantic information from high-level feature graphs, generating local loss-guided training for the segmentation network. Secondly, newly designed Deep Supervision Feature Fusion (DSFF) modules are utilized to fuse local loss feature graphs with multi-level features from the encoder, addressing the negative impact of background imbalance caused by varying polyp sizes. Finally, Efficient Feature Extraction (EFE) decoding modules are used to extract spatial information at different scales, establishing longer-distance spatial channel dependencies to enhance the overall network performance. Extensive experiments conducted on the CVC-ClinicDB and Kvasir-SEG datasets demonstrate that the proposed network out performs all mainstream networks and state-of-the-art networks, exhibiting superior performance and stronger generalization capabilities
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Publisher
Public Library of Science
Citation
PLOS ONE
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Funding Information
National Key Research and 18 Development Program of China under the Grant No. 2017YFE0135700, the Tsinghua Precision Medicine Foundation under 19 the Grant No. 2022TS003, the Bulgarian National Science Fund (BNSF) under the Grant No. П-06-ИП-ИTAЙ/1 (P06- 20 IP-CHINA/1), and the Telecommunications Research Centre (TRC) of University of Limerick, Ireland
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Article
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https://creativecommons.org/licenses/by-nc-sa/4.0/