Iterative Low-rank and rotating sparsity promotion for circumstellar disks imaging
(2019) Signal Processing with Adaptive Sparse Structured Representations (SPARS′19) Workshop — Location: Toulouse, France (1.July.2019)
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- Abstract
- Recent astronomical observations open the possibility to directly image circumstellar disks, a key feature for our understanding of extra-solar systems. However, the faint intensity of these celestial signals compared to the brightness of their hosting star make their accurate characterization a challenging processing task. While there exist several post processing techniques adapted to the extraction of (point shaped) exoplanets, this work proposes a novel iterative method for extracting the elongated structure of circumstellar signals from direct imaging datasets. This method leverages low-complexity models of both the corrupting stellar light and the disks. Our approach is assessed through numerical experiments.
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Citations
Pairet, B., Jacques, L., & Cantalloube, F. (2019). Iterative Low-rank and rotating sparsity promotion for circumstellar disks imaging. Proceedings of SPARS′19, 1(1), 1. https://hdl.handle.net/2078.5/170704 (Original work published 2019)