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Choose min-pix-per-spot adaptively per image for serial-stills indexing

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For stills indexing the minimum-pixels-per-spot filter is now chosen per image
instead of being fixed: the frame is indexed at min-pix 3/2/1 and the setting that
maximises indexed-spot count weighted by indexed fraction (n_indexed^2 / n_total)
is kept, then integrated once at that min-pix. The fraction factor keeps a smaller
min-pix's extra spots only when the lattice actually explains them, so strong frames
retain their real weak spots (extending resolution) while noise-flooded frames stay
strict.

The mode is selected by the presence of --min-pix-per-spot, now optional
(SpotFindingSettings::min_pix_per_spot is std::optional<int64_t>): omit it for the
adaptive per-image path, give a value to force a fixed min-pix. It applies only to
the stills indexing path -- rotation indexing builds one global lattice and keeps a
fixed min-pix, and the online receiver and the FPGA host path always carry a concrete
value, so neither changes. IndexAndRefine::ProcessImage now returns whether the frame
indexed, to drive the per-image selection.

Exposed in the jfjoch_viewer spot-finding settings (adaptive-threshold and
adaptive-min-pix checkboxes, each greying out the control it overrides); the broker
uses neither.

Validated on the full rotation regression battery (no regression) and the whole
serial-stills target battery at full image count.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
leonarski_f
2026-07-26 18:31:35 +02:00
co-authored by Claude Opus 4.8
parent b65691f312
commit 427f4b3fff
13 changed files with 115 additions and 31 deletions
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common/DiffractionExperiment.cpp
+2 -2
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@@ -608,8 +608,8 @@ void DiffractionExperiment::CheckDataProcessingSettings(const SpotFindingSetting
check_finite("Signal to noise threshold", settings.signal_to_noise_threshold);
check_min("Signal to noise threshold", settings.signal_to_noise_threshold, 1);
check_min("Photon count threshold", settings.photon_count_threshold, 0);
check_min("Minimum pixels per spot", settings.min_pix_per_spot, 1);
check_min("Maximum pixels per spot", settings.max_pix_per_spot, settings.min_pix_per_spot + 1);
check_min("Minimum pixels per spot", settings.min_pix_per_spot.value_or(2), 1);
check_min("Maximum pixels per spot", settings.max_pix_per_spot, settings.min_pix_per_spot.value_or(2) + 1);
check_finite("Spot finding high resolution limit", settings.high_resolution_limit);
check_finite("Spot finding low resolution limit", settings.low_resolution_limit);