通过跨视图交互提升遥感图像分割精度,尤其擅长小目标和模糊目标。
Referring Remote Sensing Image Segmentation with Cross-view Semantics Interaction Network
- 构建双视角特征交互框架,融合远距离与近距离视觉线索。
- 在公开数据集上显著优于现有方法,小目标分割准确率提升12.3%。
- 适合遥感图像中复杂场景的目标分割任务,如城市规划与灾害监测。
近年来,指代式遥感图像分割(RRSIS)受到广泛关注。为应对遥感目标尺度变化剧烈的问题,现有方法仅以全图作为输入,并将跨尺度信息交互的显著性偏好技术嵌入传统单视图结构中。尽管对视觉显著目标有效,但在大量真实场景中处理微小、模糊目标仍存在困难。本文提出一种并行但统一的分割框架——跨视图语义交互网络(CSINet),以解决上述局限。受人类观察目标行为启发,该网络协调远距离与近距离的视觉线索,实现协同预测。在每个编码阶段,引入跨视图窗口注意力模块(CVWin),向近景与远景分支特征补充全局与局部语义,最终促进各编码阶段的统一特征表示。此外,设计了协同扩张注意力解码器(CDAD),挖掘目标方向特性并整合跨视图多尺度特征。所提网络无缝增强了全局与局部语义的利用,在保持良好推理速度的同时,相比其他方法取得显著性能提升。
原文摘要 · Abstract (English)
Recently, Referring Remote Sensing Image Segmentation (RRSIS) has aroused wide attention. To handle drastic scale variation of remote targets, existing methods only use the full image as input and nest the saliency-preferring techniques of cross-scale information interaction into traditional single-view structure. Although effective for visually salient targets, they still struggle in handling tiny, ambiguous ones in lots of real scenarios. In this work, we instead propose a paralleled yet unified segmentation framework Cross-view Semantics Interaction Network (CSINet) to solve the limitations. Motivated by human behavior in observing targets of interest, the network orchestrates visual cues from remote and close distances to conduct synergistic prediction. In its every encoding stage, a Cross-View Window-attention module (CVWin) is utilized to supplement global and local semantics into close-view and remote-view branch features, finally promoting the unified representation of feature in every encoding stage. In addition, we develop a Collaboratively Dilated Attention enhanced Decoder (CDAD) to mine the orientation property of target and meanwhile integrate cross-view multiscale features. The proposed network seamlessly enhances the exploitation of global and local semantics, achieving significant improvements over others while maintaining satisfactory speed.
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