当前位置:首页>南京>ISPRS最新成果|南京航空航天大学薛朝辉团队提出SimpFit,实现缺失模态下跨域遥感分类新突破!

ISPRS最新成果|南京航空航天大学薛朝辉团队提出SimpFit,实现缺失模态下跨域遥感分类新突破!

  • 2026-03-17 19:31:10
ISPRS最新成果|南京航空航天大学薛朝辉团队提出SimpFit,实现缺失模态下跨域遥感分类新突破!

论文摘要

在推进新型城镇化和生态文明建设的背景下,利用多模态数据进行跨域遥感(RS)图像分类为城市可持续发展和湿地保护提供了重要的技术支持。尽管已经开发出了一系列方法,但实际应用中仍存在挑战。首先,RS数据和土地覆盖场景的多样性给跨域模型的适应性带来了挑战。其次,由于传感器限制、天气条件或成本约束导致目标域中存在模态缺失,这进一步阻碍了有效的跨域分类。为了应对这些挑战,我们提出了一种名为协同跨模态代理微调(SimpFit)的方法,以确保在各种跨域场景和模态缺失条件下的鲁棒性。首先,为了提取可转移的跨域融合表示,我们在特征和决策层面强调协同跨模态融合。其次,为了保证在目标域中任何模态不可用时的鲁棒性,我们引入了可学习的代理令牌。这些令牌与融合特征一起,通过轻量级仿射变换有效地微调至目标域。在各种模态缺失条件下的跨城市和跨湿地场景中进行的实验表明,SimpFit仅微调其1%的参数,在平均交并比(mIoU)方面分别比其他现有方法高出6.17%–15.34%和3.01%–8.63%。此外,本研究还表明,缺失高光谱数据(HSI)导致的性能下降最小,甚至可能通过减少光谱冗余来提高性能;缺失冠层高度模型(CHM)严重影响了对空间相邻和结构相似类别的区分;而缺失合成孔径雷达(SAR)对依赖几何和后向散射特征的类别影响最为显著,突出了其在表征人造目标和稀疏植被方面不可替代的作用。

关键图表

图 1.跨域遥感图像分类面临的挑战。本图突出两大核心挑战。(左:不同遥感模态与地表覆盖场景会阻碍模型在跨域间的自适应能力;右:由传感器限制、气象条件或成本约束导致的模态缺失问题。)

图 2.现有两种处理目标域模态缺失的方法及其局限性。
图 3.面向模态缺失条件下跨域遥感图像分类的协同模态间代理微调方法(SimpFit)。
图 4.模态间特征级融合示意图。

图 5.分层决策级融合示意图。

图 6.SZW2QAD 数据集可视化。

图 7.C2Seg-AB 数据集(AUG2BER)可视化

图 8.不同学习率设置下,SimpFit 的 mIoU 随训练轮次的变化曲线。(a) SZW2QAD 数据集结果;(b) AUG2BER 数据集结果。

图 9.RWCA 中不同预处理通道数与窗口大小的超参数分析。曲面图表示 mIoU,热力图表示 OA。(a)、(b) SZW2QAD 数据集结果;(c)、(d) AUG2BER 数据集结果。

图 10.全模态条件下不同方法在 AUG2BER 数据集上的分类结果图。

图 11.全模态条件下不同方法在 SZW2QAD 数据集上的分类结果图。

图 12.不同源域模态组合下 SimpFit 与 DGDNet 的性能对比(mIoU,%)。

图 13.不同地表覆盖类别的 Grad-CAM 可视化。前三列为本文提出的模态间融合框架结果,包括差异特征、公共特征及其融合表示;其余列为模态内特征提取与融合结果。

图 14.SZW2QAD 数据集上,不同模态缺失方法的深度语义特征可分性与光谱角相似度对比。

图 15.不同方法在 SZW2QAD 数据集上的效率对比。左上角表示浮点运算量更小、融合质量更高;气泡颜色表示模型在硬件上部署的内存占用。

图 16.跨湿地与跨城市场景下,多种模态缺失条件中各类别 IoU 相对全模态基线的性能比值。

版权声明

声明:本推文仅用于学习交流,不做其他任何目的。若有侵权,请联系微信号:GeeStudy_2020删除或修改!论文doi链接:https://doi.org/10.1016/j.isprsjprs.2026.02.040点赞、收藏、关注!后台回复:GEE遥感训练营260311,免费获取原文。

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  1. CONNECT:[ UseTime:0.000435s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000661s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000330s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001976s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000630s ]
  6. SELECT * FROM `set` [ RunTime:0.005332s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000690s ]
  8. SELECT * FROM `article` WHERE `id` = 504032 LIMIT 1 [ RunTime:0.003530s ]
  9. UPDATE `article` SET `lasttime` = 1775446019 WHERE `id` = 504032 [ RunTime:0.003459s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000258s ]
  11. SELECT * FROM `article` WHERE `id` < 504032 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.009704s ]
  12. SELECT * FROM `article` WHERE `id` > 504032 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.019067s ]
  13. SELECT * FROM `article` WHERE `id` < 504032 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004263s ]
  14. SELECT * FROM `article` WHERE `id` < 504032 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002737s ]
  15. SELECT * FROM `article` WHERE `id` < 504032 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003468s ]
0.155108s