[libcamera-devel] softISP for libcamera

[Pavel Machek]

Hi!

> > Thanks a lot, I got this all to work on pinephone.
> > 
> > I'd really like to see statistics gathering separated from
> > debayer.
> > 
> > Another thing is that soft IPA is a bit too simplistic
> > (soft_linaro.cpp):
> > 
> >         /*
> >          * Try to use the minimal possible analogue gain.
> >          * The exposure can be any value from exposure_min_ to exposure_max_,
> >          * and normally this should keep the frame rate intact.
> >          */
> > 
> > That will result in shooting at 1/15, ISO50 -- resulting in blurry
> > photos (motion) -- even with sensors that could shoot at ISO500
> > without getting grainy. RPI pipeline has support for this, with config
> > file saying "stay at ISO50 to 1/60, then move iso up to ISO200 @ 1/60,
> > then start adjusting exposure again". It would be nice to reuse it.
> 
> Let's please not refer to "ISO" in technical discussions. The ISO 12232
> standard is pretty much useless, "ISO" values are only meant for
> marketing.

Well, I believe "marketing ISO" is good enough to demonstrate my point
here :-). It is familiar "unit" to people doing photography. What
would you suggest as replacement?

Anyway "minimal possible gain" is too simple solution for many cases.

Best regards,
								Pavel
-- 
People of Russia, stop Putin before his war on Ukraine escalates.
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