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1.中国科学院 西安光学精密机械研究所, 陕西 西安 710119
2.中国科学院大学, 北京 101408
3.西安工业大学 计算机科学与工程学院, 陕西 西安 710021
4.生态环境部卫星环境应用中心, 北京 100006
李晗之,男,硕士研究生,2022年于广西师范大学获得学士学位,主要从事遥感图像变化检测的研究。E-mail: lihanzhi23@mails.ucas.ac.cn
李海巍,男,博士,研究员,2016年于中南大学获得博士学位,主要从事遥感成像机理、星载和无人机图像智能处理、高光谱应用等方面的研究。E-mail: lihaiwei@opt.ac.cn
收稿:2026-01-07,
修回:2026-02-01,
纸质出版:2026-03-05
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李晗之, 李海巍, 郭琦, 等. 基于特征子空间解耦与迭代残差精炼的高分辨率遥感影像变化检测[J]. 液晶与显示, 2026,41(3):402-414.
LI Hanzhi, LI Haiwei, GUO Qi, et al. High-resolution remote sensing image change detection based on feature subspace decoupling and iterative residual refinement[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(3): 402-414.
李晗之, 李海巍, 郭琦, 等. 基于特征子空间解耦与迭代残差精炼的高分辨率遥感影像变化检测[J]. 液晶与显示, 2026,41(3):402-414. DOI: 10.37188/CJLCD.2026-0003. CSTR: 32172.14.CJLCD.2026-0003.
LI Hanzhi, LI Haiwei, GUO Qi, et al. High-resolution remote sensing image change detection based on feature subspace decoupling and iterative residual refinement[J]. Chinese Journal of Liquid Crystals and Displays, 2026, 41(3): 402-414. DOI: 10.37188/CJLCD.2026-0003. CSTR: 32172.14.CJLCD.2026-0003.
随着高分辨率遥感对地观测技术的发展,影像中丰富的地物纹理细节在提升信息量的同时,也引入了由光照、阴影及季节性物候差异导致的复杂背景噪声。针对高分辨率遥感变化检测中复杂背景噪声引发的伪变化误检,以及传统上采样导致的微小目标细节丢失问题,提出一种基于特征解耦与迭代精炼的网络(DIR-Net)。首先,利用预训练的FastSAM作为视觉先验编码器,提取多尺度鲁棒特征。接着,设计特征子空间解耦模块,通过正交投影和交叉重校准策略,显式地将双时相特征分解为共享语义子空间和差异特征子空间,从源头抑制环境噪声。最后,提出迭代残差精炼模块,引入坐标注意力机制,将解码过程建模为由粗到精的残差回归问题,在保持分辨率的特征空间中逐步恢复微小目标的边缘细节。在LEVIR-CD、WHU-CD和SYSU-CD三个公开数据集上的实验结果表明,DIR-Net的F1分数分别达到了91.33%、93.31%和86.29%。相比于主流的ChangeFormer和BIT算法,F1分数平均提升了约5.0%,显著降低了伪变化误报率,同时保持了极高的召回率。该方法有效解决了特征耦合与细节丢失的难题,在复杂场景下具有更强的鲁棒性和更高的边界定位精度。
With the development of high-resolution remote sensing earth observation technology, the rich texture details in images enhance information content but also introduce complex background noise caused by lighting, shadows, and seasonal phenological differences. To address the issues of pseudo-change misdetection caused by complex background noise and the loss of small target details caused by traditional upsampling in high-resolution remote sensing change detection, a network based on feature decoupling and iterative refinement(DIR-Net) is proposed. First, the pre-trained FastSAM is utilized as a visual prior encoder to extract multi-scale robust features. Next, a Feature Subspace Decoupling Module is designed to explicitly decompose bi-temporal features into a shared semantic subspace and a differential feature subspace through orthogonal projection and cross-recalibration strategies, suppressing environmental noise from the source. Finally, an Iterative Residual Refinement Module is proposed. By introducing a coordinate attention mechanism, the decoding process is modeled as a coarse-to-fine residual regression problem, gradually recovering the edge details of small targets in the resolution-maintained feature space. Experimental results on three public datasets, LEVIR-CD, WHU-CD, and SYSU-CD, demonstrate that the F1 scores of DIR-Net reached 91.33%, 93.31%, and 86.29%, respectively. Compared with mainstream ChangeFormer and BIT algorithms, the F1 score improved by an average of approximately 5.0%. The proposed method significantly reduces the false alarm rate of pseudo-changes while maintaining a very high recall rate. This method effectively resolves the challenges of feature coupling and detail loss, demonstrating stronger robustness and higher boundary localization accuracy in complex scenes.
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