S2Looking: A Satellite Side-Looking Dataset for Building Change Detection

Abstract

Building-change detection underpins many important applications, especially in the military and crisis-management domains. Recent methods used for change detection have shifted towards deep learning, which depends on the quality of its training data. The assembly of large-scale annotated satellite imagery datasets is therefore essential for global building-change surveillance. Existing datasets almost exclusively offer near-nadir viewing angles. This limits the range of changes that can be detected. By offering larger observation ranges, the scroll imaging mode of optical satellites presents an opportunity to overcome this restriction. This paper therefore introduces S2Looking, a building-change-detection dataset that contains large-scale side-looking satellite images captured at various off-nadir angles. The dataset consists of 5000 bitemporal image pairs of rural areas and more than 65,920 annotated instances of changes throughout the world. The dataset can be used to train deep-learning-based change-detection algorithms. It expands upon existing datasets by providing (1) larger viewing angles; (2) large illumination variances; and (3) the added complexity of rural images. To facilitate {the} use of the dataset, a benchmark task has been established, and preliminary tests suggest that deep-learning algorithms find the dataset significantly more challenging than the closest-competing near-nadir dataset, LEVIR-CD+. S2Looking may therefore promote important advances in existing building-change-detection algorithms. The dataset is available at https://github.com/S2Looking/.

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• Change Guiding Network: Incorporating Change Prior to Guide Change Detection in Remote Sensing Imagery
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• Remote Sensing SpatioTemporal Vision-Language Models: A Comprehensive Survey
• Vision-Language Modeling Meets Remote Sensing: Models, Datasets and Perspectives
• Single-Temporal Supervised Learning for Universal Remote Sensing Change Detection
• Active learning for interactive satellite image change detection
• BD-MSA: Body decouple VHR Remote Sensing Image Change Detection method guided by multi-scale feature information aggregation
• FPCD: An Open Aerial VHR Dataset for Farm Pond Change Detection