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A low-rank approach to image defringing

Abstract : In this work, we revisit the problem of interference fringe patterns in CCD chips occurring in near-infrared bands due to multiple light reflections within the chip. We briefly discuss the traditional approaches that were developed to remove these patterns from science images, and mention their limitations. We then introduce a new method to globally estimate the fringe patterns in a collection of science images without additional external data, allowing for some variation of the patterns between images. We demonstrate this new method on near-infrared images taken by the CFHT wide-field imager Megacam.
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Submitted on : Thursday, November 18, 2021 - 10:21:37 AM
Last modification on : Tuesday, January 4, 2022 - 5:53:50 AM


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  • HAL Id : hal-03434130, version 1


Simon Prunet. A low-rank approach to image defringing. Publications of the Astronomical Society of the Pacific, Astronomical Society of the Pacific, 2021. ⟨hal-03434130⟩



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