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Imaging"],"abstract":"<jats:p>Transparent object segmentation plays a critical role in indoor and outdoor scene understanding, particularly driven by the rapid advancements in autonomous driving and robotics. However, this task presents significant challenges due to the lack of distinct texture and chromatic features in transparent objects, causing their appearance to blend into the background. Existing methods face inherent architectural limitations: CNNs are restricted by limited receptive fields, while Transformer-based methods may inadvertently suppress the weak feature details of transparent surfaces due to the inherent low-pass filtering property of self-attention mechanisms, treating them as background noise. Consequently, these approaches struggle to consistently segment transparent objects across diverse scales, failing to preserve both fine details and large-scale structures. To address these limitations, we propose the Global Context-Aware Transformer (GCA-Trans). Specifically, we design a Multi-scale Context Mining (MCM) module that leverages parallel dilated convolutions with varying receptive fields to simultaneously extract features at multiple scales. This design allows the model to capture and fuse fine-grained local details (e.g., edges and textures) with coarse-grained global spatial context (e.g., overall object shapes), ensuring robust segmentation performance for transparent objects of varying scales. Extensive experiments on four benchmark datasets demonstrate that GCA-Trans sets a new state of the art, achieving significant improvements of 2.53% mIoU on Trans10K-v2, 2.1% IoU on RGB-D GSD, 2.2% IoU on GDD, and 1.9% IoU on GSD, validating the effectiveness and robustness of our approach.<\/jats:p>","DOI":"10.3390\/jimaging12050212","type":"journal-article","created":{"date-parts":[[2026,5,18]],"date-time":"2026-05-18T10:25:16Z","timestamp":1779099916000},"page":"212","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["GCA-Trans: Global Context-Aware Transformer for Robust Transparent Object Segmentation in Robotic Environments"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4489-2517","authenticated-orcid":false,"given":"Deping","family":"Li","sequence":"first","affiliation":[{"name":"School of Intelligent Systems Science and Engineering, Jinan University, Zhuhai 510632, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-5501-8211","authenticated-orcid":false,"given":"Zujian","family":"Dong","sequence":"additional","affiliation":[{"name":"School of Intelligent Systems Science and Engineering, Jinan University, Zhuhai 510632, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zilong","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Informatics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ka-Kui","family":"Li","sequence":"additional","affiliation":[{"name":"School of Intelligent Systems Science and Engineering, Jinan University, Zhuhai 510632, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yushen","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Mathematics, South China University of Technology, Guangzhou 510641, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1038\/s41586-020-2442-2","article-title":"A mobile robotic chemist","volume":"583","author":"Burger","year":"2020","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2547","DOI":"10.1109\/TAI.2023.3326120","article-title":"Robotic Perception of Transparent Objects: A Review","volume":"5","author":"Jiang","year":"2024","journal-title":"IEEE Trans. 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