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Fig. 1.


Schematic representation of the main steps followed by the state-of-the-art post-processing methods for ADI sequences with circumstellar disks. (a) Principle of the classical approach based on the estimation and subtraction of an on-axis PSF. (b) Four main categories of algorithms designed to reduce reconstruction artifacts seen in (a): using a physics-based model of the disk, mitigating artifacts directly from the ADI sequence of interest or using an additional sequence of reference, or formalizing the reconstruction task as an inverse problem. REXPACO falls into the last category: methods based on an inverse problems approach.

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