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- W4387688049 abstract "Change detection plays a fundamental role in Earth observation for analyzing temporal iterations over time. However, recent studies have largely neglected the utilization of multimodal data that presents significant practical and technical advantages compared to single-modal approaches. This research focuses on leveraging digital surface model (DSM) data and aerial images captured at different times for detecting change beyond 2D. We observe that the current change detection methods struggle with the multitask conflicts between semantic and height change detection tasks. To address this challenge, we propose an efficient Transformer-based network that learns shared representation between cross-dimensional inputs through cross-attention. It adopts a consistency constraint to establish the multimodal relationship, which involves obtaining pseudo change through height change thresholding and minimizing the difference between semantic and pseudo change within their overlapping regions. A DSM-to-image multimodal dataset encompassing three cities in the Netherlands was constructed. It lays a new foundation for beyond-2D change detection from cross-dimensional inputs. Compared to five state-of-the-art change detection methods, our model demonstrates consistent multitask superiority in terms of semantic and height change detection. Furthermore, the consistency strategy can be seamlessly adapted to the other methods, yielding promising improvements." @default.
- W4387688049 created "2023-10-17" @default.
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- W4387688049 date "2023-10-13" @default.
- W4387688049 modified "2023-10-18" @default.
- W4387688049 title "Transformer-based Multimodal Change Detection with Multitask Consistency Constraints" @default.
- W4387688049 doi "https://doi.org/10.48550/arxiv.2310.09276" @default.
- W4387688049 hasPublicationYear "2023" @default.
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