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ipa: raspberrypi: Estimate the colour temerature if starting with fixed colour gains

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When the AWB is started from "cold" with fixed colour gains, we try to
estimate the colour temperature this corresponds to (if a calibrated
CT curve was supplied). When fixed colour gains are set after the AWB
has been running, we leave the CT estimate alone, as the one we have
is probably sensible.

This estimated colour is passed out in the metadata for other
algorithms - notably ALSC - to use.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
David Plowman 2020-12-08 20:44:40 +00:00 • committed by Laurent Pinchart
parent 1a6a7d4a8e
commit 4cd283acd0
3 changed files with 20 additions and 1 deletions
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src/ipa/raspberrypi/controller/rpi/awb.hpp
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@ -159,6 +159,7 @@ private:
double manual_r_;
// manual b setting
double manual_b_;
bool first_switch_mode_; // is this the first call to SwitchMode?
};
static inline Awb::RGB operator+(Awb::RGB const &a, Awb::RGB const &b)