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This paper proposes a fusion framework that combines multi-scale edge detection and SIFT-based local descriptors, integrated through a learnable attention mechanism that adaptively weights features at each pixel location. The method is evaluated on a custom UAV-acquired dataset containing high-resolution power grid imagery under diverse environmental scenarios. Experimental results demonstrate that the proposed approach significantly outperforms edge-only, SIFT-only, and U-Net models across SSIM, F1-score, and IoU metrics, while maintaining practical inference speed. The model also achieves the lowest 3D registration error in point cloud alignment. These results confirm the effectiveness of our method and highlight its potential for accurate, robust digital twin construction in real-world grid inspection systems. <\/jats:p>","DOI":"10.1142\/s0218001425500168","type":"journal-article","created":{"date-parts":[[2025,6,13]],"date-time":"2025-06-13T00:11:24Z","timestamp":1749773484000},"source":"Crossref","is-referenced-by-count":2,"title":["Application Exploration of Multi-Scale Edge Detection and SIFT Feature Fusion in Digital Twin Pattern Recognition for Power Grids"],"prefix":"10.1142","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-0386-2457","authenticated-orcid":false,"given":"Chunmei","family":"Zhang","sequence":"first","affiliation":[{"name":"Zhongshan Power Supply Bureau Guangdong Power Grid Co., Ltd., Zhongshan, Guangdong 528400, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-4678-1762","authenticated-orcid":false,"given":"Xingque","family":"Xu","sequence":"additional","affiliation":[{"name":"Zhongshan Power Supply Bureau Guangdong Power Grid Co., Ltd., Zhongshan, Guangdong 528400, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-6234-0908","authenticated-orcid":false,"given":"Yongjian","family":"Li","sequence":"additional","affiliation":[{"name":"Zhongshan Power Supply Bureau Guangdong Power Grid Co., Ltd., Zhongshan, Guangdong 528400, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-4941-6174","authenticated-orcid":false,"given":"Silin","family":"Liu","sequence":"additional","affiliation":[{"name":"Zhongshan Power Supply Bureau Guangdong Power Grid Co., Ltd., Zhongshan, Guangdong 528400, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-1905-8570","authenticated-orcid":false,"given":"Jianyi","family":"Li","sequence":"additional","affiliation":[{"name":"Zhongshan Power Supply Bureau Guangdong Power Grid Co., Ltd., Zhongshan, Guangdong 528400, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2025,7,30]]},"reference":[{"key":"S0218001425500168BIB001","doi-asserted-by":"publisher","DOI":"10.1007\/s12652-018-1092-9"},{"key":"S0218001425500168BIB002","doi-asserted-by":"publisher","DOI":"10.1016\/j.egyr.2022.10.328"},{"key":"S0218001425500168BIB003","doi-asserted-by":"publisher","DOI":"10.1109\/LGRS.2019.2899123"},{"key":"S0218001425500168BIB004","doi-asserted-by":"publisher","DOI":"10.1007\/s10489-022-03577-2"},{"key":"S0218001425500168BIB005","doi-asserted-by":"publisher","DOI":"10.1109\/CVPR42600.2020.00223"},{"key":"S0218001425500168BIB006","doi-asserted-by":"publisher","DOI":"10.1016\/j.patcog.2023.109361"},{"key":"S0218001425500168BIB007","doi-asserted-by":"publisher","DOI":"10.1007\/s00371-020-01814-8"},{"key":"S0218001425500168BIB008","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuroimage.2019.116091"},{"key":"S0218001425500168BIB009","doi-asserted-by":"publisher","DOI":"10.1016\/j.bspc.2023.105534"},{"key":"S0218001425500168BIB010","doi-asserted-by":"publisher","DOI":"10.1109\/CVPR52688.2022.00246"},{"key":"S0218001425500168BIB011","doi-asserted-by":"publisher","DOI":"10.1109\/TASLP.2020.3030497"},{"key":"S0218001425500168BIB012","doi-asserted-by":"publisher","DOI":"10.1016\/j.patrec.2018.08.032"},{"issue":"2","key":"S0218001425500168BIB013","volume":"5","author":"Lindstr\u00f6m E.","year":"2024","journal-title":"J. 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