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Draft: LENA planetary alignment algorithm

Frédéric Trouche requested to merge xfred81/siril:xfred-lena-planetary into master

Description

This is a new proposition for a planetary alignment algorithm named LENA: "Lean Estimation 'n' Alignment". This version is intended to testing and evaluation purposes.

It has formerly been discussed https://discuss.pixls.us/t/support-for-a-new-planetary-alignment-algorithm/42726/ .

Changes Made

LENA can be used from the Alignment algorithms' drop-down list. Algorithm requires the usage of the "cut" slider, to let user see brightest zones. Then, user has to place the selection box over a part of the image containing (bright) and noticeable patterns that will be considered for alignment.

Related Issues & Limitations

  • Only supports translations (no rotation is handled),
  • Max translation is hard-coded (100px), and will be made configurable (if algorithm is kept),
  • As of now, I did not find a reliable mean to detect if alignment is sufficient. For first phase, I'd thus suggest testers to consider only images containing the selected patterns.

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