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The Taub Faculty of Computer Science Events and Talks

Pixel-Club: Using Zodiacal Light For Spaceborne Calibration Of Polarimetric Imagers
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Or Avitan (Graduate Seminar)
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Tuesday, 12.03.2024, 11:30
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Room 1061, EE Meyer Building
We propose that spaceborne polarimetric imagers can be calibrated, or self-calibrated using zodiacal light (ZL). ZL is created by a cloud of interplanetary dust particles. It has a significant degree of polarization in a wide field of view. From space, ZL is unaffected by terrestrial disturbances. ZL is insensitive to the camera location, so it is suited for simultaneous cross-calibration of satellite constellations. ZL changes on a scale of months, thus being a quasi-constant target in realistic calibration sessions. We derive a forward model for polarimetric image formation. Based on it, we formulate an inverse problem for polarimetric calibration and self-calibration, as well as an algorithm for the solution. The methods here are demonstrated in simulations. Towards these simulations, we render polarized images of the sky, including ZL from space, polarimetric disturbances, and imaging noise. M.Sc. student under the supervision of Prof. Yoav Schechner.