2gyffg
Posts: 3
Joined: Sat Mar 19, 2016 9:41 pm

picamera drc and manual white balance problem

Sat Mar 19, 2016 9:48 pm

I am using python and picamera to take controlled images. I am using manual white balance. Problem is that when I set drc_strength to anything other than 'off', the manual white balance settings seem to have no effect. The values in awb_gains are correct, and I have awb_mode='off', but the picture looks as if awb_mode='auto'. If drc_strength='off', then picture appears consistent with the values in awb_gains.

Is there a problem with using both drc and manual white balance? Is this a bug or am I doing something wrong?

2gyffg
Posts: 3
Joined: Sat Mar 19, 2016 9:41 pm

Re: picamera drc and manual white balance problem

Mon Mar 28, 2016 12:02 am

Any ideas here?

6by9
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
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Re: picamera drc and manual white balance problem

Mon Mar 28, 2016 7:47 am

Drc requires a stats pass. Stats pass recomputes the white balance gains. Sorry, no way around that one.
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