arXiv:2604.16794cs.CV2026-04

通过跨域一致性建模,提升射电干涉成像质量。

Improving Radio Interferometry Imaging by Explicitly Modeling Cross-Domain Consistency in Reconstruction

论文配图:Improving Radio Interferometry Imaging by Explicitly Modeling Cross-Domain Consistency in Reconstruction
图 1 · 摘自论文原文
  • 设计多阶段多任务框架,显式建模图像与可见度间的跨域一致性。
  • 在自监督下实现更优的域间信息互补,提升稀疏数据重建精度。
  • 适合射电天文图像重建、多模态信号处理研究者参考。

射电天文学在理解宇宙,尤其是非热天体物理方面至关重要。天体图像由射电望远镜测量的信号(称为可见度)生成,此类成像结果称为脏图,因稀疏性等因素导致伪影,需重建以提升质量。现有方法通常仅在单一模态域中进行重建,即成像后的脏图或成像前的稀疏可见度。仅聚焦单一模态会丢失图像与可见度域之间的互补上下文信息,导致相互依赖与一致性的建模不完整。为此,我们提出CDCRec,一种显式建模跨域一致性的多模态射电干涉数据重建方法。设计分层多任务、多阶段框架,增强重建过程中域间交互探索。实验表明,通过强化跨域相关性提取,CDCRec显著提升成像性能。尤其在依赖从受限源域数据恢复密集信息的干涉域转换任务中,其自监督互补建模策略优于当前方法。

原文摘要 · Abstract (English)

Radio astronomy plays a crucial role in understanding the universe, particularly within the realm of non-thermal astrophysics. Images of celestial objects are derived from the signals (called visibility) measured by radio telescopes. Such imaging results, called dirty images, contain artifacts due to factors such as sparsity and therefore require reconstruction to improve imaging quality. Existing methods typically restrict reconstruction to a unimodal domain, either to the dirty image after imaging or to the sparse visibility prior to imaging. Focusing solely on each unimodal reconstruction results in the loss of complementary in-context information in either the visibility or image domain, leading to an incomplete modeling of mutual dependency and consistency. To address these challenges, we propose CDCRec, a multimodal radio interferometric data reconstruction method that explicitly models cross-domain consistency. We design a hierarchical multi-task and multi-stage framework to enhance the exploration of interplays between domains during reconstruction. Our experimental results demonstrate that CDCRec improves imaging performance through enhanced cross-domain correlation extraction. In particular, our self-supervised complementary modeling strategy is better than current methods at interferometric domain translations that rely heavily on recovering dense information from constrained source-domain data.

射电成像跨域建模多模态重建

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