MaskCD: A Remote Sensing Change Detection Network Based on Mask Classification

• URL: http://arxiv.org/abs/2404.12081v1
• Date: Thu, 18 Apr 2024 11:05:15 GMT
• Title: MaskCD: A Remote Sensing Change Detection Network Based on Mask Classification
• Authors: Weikang Yu, Xiaokang Zhang, Samiran Das, Xiao Xiang Zhu, Pedram Ghamisi,
• Abstract summary: Change (CD) from remote sensing (RS) images using deep learning has been widely investigated in the literature. We propose MaskCD to detect changed areas by adaptively generating categorized masks from input image pairs. It reconstructs the desired changed objects by decoding the pixel-wise representations into learnable mask proposals.
• Score: 29.15203530375882
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Change detection (CD) from remote sensing (RS) images using deep learning has been widely investigated in the literature. It is typically regarded as a pixel-wise labeling task that aims to classify each pixel as changed or unchanged. Although per-pixel classification networks in encoder-decoder structures have shown dominance, they still suffer from imprecise boundaries and incomplete object delineation at various scenes. For high-resolution RS images, partly or totally changed objects are more worthy of attention rather than a single pixel. Therefore, we revisit the CD task from the mask prediction and classification perspective and propose MaskCD to detect changed areas by adaptively generating categorized masks from input image pairs. Specifically, it utilizes a cross-level change representation perceiver (CLCRP) to learn multiscale change-aware representations and capture spatiotemporal relations from encoded features by exploiting deformable multihead self-attention (DeformMHSA). Subsequently, a masked-attention-based detection transformers (MA-DETR) decoder is developed to accurately locate and identify changed objects based on masked attention and self-attention mechanisms. It reconstructs the desired changed objects by decoding the pixel-wise representations into learnable mask proposals and making final predictions from these candidates. Experimental results on five benchmark datasets demonstrate the proposed approach outperforms other state-of-the-art models. Codes and pretrained models are available online (https://github.com/EricYu97/MaskCD).

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