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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2021-11-16 16:29:23 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2021-11-23 10:29:31 +0200 |
| commit | b0e31c902084b9f4dfa2bafa07a1d62c83eb6292 (patch) | |
| tree | 2704bf2dfc50e919de33efd7ff8c49ba90125d2b /Documentation/theme/static | |
| parent | a2b4975a1ca0ec122227d5c8c2ef6a6aa28803e5 (diff) | |
ipa: ipu3: agc: Saturate the averages when computing relative luminance
The relative luminance is calculated using an iterative process to
account for saturation in the sensor, as multiplying pixels by a gain
doesn't increase the relative luminance by the same factor if some
regions are saturated. Relative luminance estimation doesn't apply a
saturation, which produces a value that doesn't match what the sensor
will output, and defeats the point of the iterative process. Fix it.
Fixes: f8f07f9468c6 ("ipa: ipu3: agc: Improve gain calculation")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'Documentation/theme/static')
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