[libcamera-devel] [RFC PATCH 0/1] IPU3 AWB gains correction

Jean-Michel Hautbois jeanmichel.hautbois at ideasonboard.com
Thu Jun 16 11:11:48 CEST 2022


Hi there,

Bingbu, Sakari, I cc'ed you because this patch is not aligned with the
current documentation in the intel-ipu3.h file, could you have a look
please ?

The part which worries me is that the green gains should be 0 for the
white balance to be correct which is not stated in the documentation at
all.

In order to demonstrate it I captured two frames, [1] is the actual SGo2
image quality, and [2] with this patch applied.

[1]: https://pasteboard.co/hUcL4U6eyyAH.png
[2]: https://pasteboard.co/2XIbkkL8kitl.png

There is a very clear benefit, that's why I submit this RFC as I think
it needs to be clarified :-).

Thanks !
JM

Jean-Michel Hautbois (1):
  ipa: ipu3: awb: Correct the coefficient factor

 src/ipa/ipu3/algorithms/awb.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

-- 
2.34.1



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