Hyperspectral image change detection (HSI-CD) aims to identify the
differences in bitemporal HSIs. To mitigate spectral redundancy and improve the
discriminativeness of changing features, some methods introduced band selection
technology to select bands conducive for CD. However, these methods are limited
by the inability to end-to-end training with the deep learning-based feature
extractor and lack considering the complex nonlinear relationship among bands.
In this paper, we propose an end-to-end efficient spectral-spatial change
detection network (ES2Net) to address these issues. Specifically, we devised a
learnable band selection module to automatically select bands conducive to CD.
It can be jointly optimized with a feature extraction network and capture the
complex nonlinear relationships among bands. Moreover, considering the large
spatial feature distribution differences among different bands, we design the
cluster-wise spatial attention mechanism that assigns a spatial attention
factor to each individual band to individually improve the feature
discriminativeness for each band. Experiments on three widely used HSI-CD
datasets demonstrate the effectiveness and superiority of this method compared
with other state-of-the-art methods.

为了解决选择频段困难和频段之间的复杂非线性关系的问题，本文提出了一种端到端的高效光谱空间变化检测网络（ES2Net），通过引入可学习的频段选择模块和聚类式空间注意机制，能够自动选择适合变化检测的频段并优化特征提取网络，从而提高光谱变化检测的效果。实验证明，该方法相较于其他最先进的方法具有更高的效能和优越性。