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authorJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2021-09-15 20:00:48 +0200
committerJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2021-10-06 15:59:40 +0200
commit3a240e56a8d266846548f9d9b3c70da3ee9533c9 (patch)
treeb98e34e532e656966e53543d910a37045fa27484 /test/v4l2_subdevice
parent195e6d09685be76a53f2890a224796c15a9f7e26 (diff)
ipa: ipu3: awb: Correct the relevant zones proportion
The algorithm uses the statistics of a cell only if there is not too much saturated pixels in it. The grey world algorithm works fine when there are a limited number of outliers. Consider a valid zone to be at least 80% of unsaturated cells in it. This value could very well be configurable, and make the algorithm more or less tolerant. While at it, implement it in a configure() call as it will not change during execution, and cache the cellsPerZone values estimated with std::round as we are using cmath. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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