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path: root/src/ipa/libipa/lux.h
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2025-02-21libipa: lux: Normalize referenceY to 1Stefan Klug
By normalizing the referenceY value to 1 (which is the usual range for Y) in the tuning file, the bins_ value is no longer needed. Remove it. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
2024-12-23ipa: libipa: Add Lux helperPaul Elder
Add a Lux helper to libipa that does the estimation of the lux level given gain, exposure, and luminance histogram. The helper also handles reading the reference values from the tuning file. These are expected to be common operations of lux algorithm modules in IPAs, and is modeled/copied from Raspberry Pi. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Isaac Scott <isaac.scott@ideasonboard.com>