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Implement Gaussian Grid algorithm for centroiding #86

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zeddie888 opened this issue Mar 1, 2023 · 3 comments
Open

Implement Gaussian Grid algorithm for centroiding #86

zeddie888 opened this issue Mar 1, 2023 · 3 comments
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zeddie888 commented Mar 1, 2023 •
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More accurate than Center of Gravity

Uses Levenberg-Marquardt algorithm, see eigen for existing implementation
@zeddie888 zeddie888 added the enhancement New feature or request label Mar 1, 2023
@zeddie888 zeddie888 self-assigned this Mar 1, 2023
@zeddie888 zeddie888 changed the title Implement Levenberg-Marquardt algorithm for centroiding Implement Gaussian Grid algorithm for centroiding Mar 2, 2023
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According to the paper (and experimental results), Gaussian Grid performs best with a 5x5 window

TODO: implement the case (easy tweak) when shot noise is the predominant source of noise

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zeddie888 commented Mar 26, 2023 •
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Note: I haven't compared the different centroiding algorithms on a variety of scenarios, but Gaussian Grid actually doesn't do better than COG all the time, at least in the simulated ideal case (no noise at all)

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TODO: formula is slightly different when shot noise is/isn't the predominant source of noise

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