[media] ov2640: add information about DSP register 0xc7

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According to ov2640 software application notes, there are two Automatic
White Balance (AWB) modes, which are selected by DSP register 0xc7:

1) Simple AWB: assumes the average color is gray
   + independent from lens
   - doesn't work well if captured area contains unbalanced colors
     (e.g. large blue background)

2) Advanced AWB: uses color temperature information
   + more accurate, works with all image contents
   - lens specific, requires calibration

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

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Frank Schaefer 2017-04-16 14:35:42 -03:00 • committed by Mauro Carvalho Chehab

parent d81638eadd

commit 06dd8f7791

1 changed files with 5 additions and 1 deletions

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6

drivers/media/i2c/ov2640.c

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