Fix GCP handling#1107

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YanNoun wants to merge 10 commits intomapillary:mainfrom

YanNoun:fix-gcp-handling

Commits on Dec 1, 2025

Proper focal 35mm conversion
Yann N.
committed

Commits on Dec 2, 2025

Update to ceres 2.2 + use SuiteSparse+Metis
Yann N.
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Speed track manager creation while decreasing memory usage
Yann N.
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Add C++ // triangulation function
Yann N.
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Parallelize track counting
Yann N.
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Speed up VLAD by passing small copies instead of a big chunk
Yann N.
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On-the-fly resection candidates
Yann N.
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Add grid-based decimation followed by triangulation in BA
Yann N.
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Preempt redundant images and resect them at the end
Yann N.
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Commits on Dec 3, 2025

Better and unified GCP thresholds handling :
Yann N.
committed