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moritzmhmk / homebridge-camera-rpi

raspberry pi camera plugin for homebridge
MIT License
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White balance adjustment? #34

Open Squuiid opened 6 years ago

Squuiid commented 6 years ago

Does anyone know of a way of adjusting the white balance on the camera? I have a white wall in the background and it uses that to set the white balance meaning that anything in front of it comes up as extremely dark.

Squuiid commented 6 years ago

Options for raspivid and raspistill are as follows. Not sure if Homebridge-camera-rpi uses any of these in the background? Rotate, verticalFlip and horizontalFlip are there so perhaps some of these could also be added? Guessing here of course as I am no developer :)

--sharpness,    -sh     Set image sharpness (-100 - 100)

Sets the sharpness of the image. 0 is the default.

--contrast, -co     Set image contrast (-100 - 100)

Sets the contrast of the image. 0 is the default.

--brightness,   -br     Set image brightness (0 - 100)

Sets the brightness of the image. 50 is the default. 0 is black, 100 is white.

--saturation,   -sa     Set image saturation (-100 - 100)

Sets the colour saturation of the image. 0 is the default.

--ISO,  -ISO        Set capture ISO (100 - 800)

Sets the ISO to be used for captures.

--vstab,    -vs     Turn on video stabilisation

In video mode only, turns on video stabilisation.

--ev,   -ev     Set EV compensation (-10 - 10)

Sets the EV compensation of the image. Default is 0.

--exposure, -ex     Set exposure mode

Possible options are:

auto: use automatic exposure mode night: select setting for night shooting nightpreview: backlight: select setting for backlit subject spotlight: sports: select setting for sports (fast shutter etc.) snow: select setting optimised for snowy scenery beach: select setting optimised for beach verylong: select setting for long exposures fixedfps: constrain fps to a fixed value antishake: antishake mode fireworks: select setting optimised for fireworks Note that not all of these settings may be implemented, depending on camera tuning.

--awb,  -awb        Set Automatic White Balance (AWB) mode

Modes for which colour temperature ranges (K) are available have these settings in brackets.

off: turn off white balance calculation auto: automatic mode (default) sun: sunny mode (between 5000K and 6500K) cloud: cloudy mode (between 6500K and 12000K) shade: shade mode tungsten: tungsten lighting mode (between 2500K and 3500K) fluorescent: fluorescent lighting mode (between 2500K and 4500K) incandescent: incandescent lighting mode flash: flash mode horizon: horizon mode Note that not all of these settings may be implemented, depending on camera type.

https://www.raspberrypi.org/documentation/raspbian/applications/camera.md