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Labsmore / pyuscope

Python machine vision platform
BSD 2-Clause "Simplified" License
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Exposure & Color Temperature control on LIP-VA1 #473

Open nubcore opened 5 months ago

nubcore commented 5 months ago

The "Imager" tab doesn't allow changing Exposure and doesn't give any options for Color Temperature. I know this isn't a bug per-say, but is there a work around that can be documented for editing this in a config or manually in some way?

nubcore commented 5 months ago

Found suitable process for overriding and configuring most settings and getting generally improved results as baseline.

List all devices: v4l2-ctl --list-devices

Set device to configure: v4l2-ctl -d /dev/video0

List all available user controls, defaults and current values: v4l2-ctl -l

Turn off automatic white balance: v4l2-ctl -c white_balance_automatic=0

Set white balance close to cold white LED illuminator: v4l2-ctl -c white_balance_temperature=6500

Set brightness: v4l2-ctl -c brightness=-42

Set exposure to manual: v4l2-ctl -c auto_exposure=1

Set esposure: v4l2-ctl -c exposure_time_absolute=1

Some tips for getting started: https://medium.com/@deepeshdeepakdd2/v4l-a-complete-practical-tutorial-c520f097b590

JohnDMcMaster commented 5 months ago

I'll answer in a bit more detail later, but these settings were intentionally disabled due to various issues. You can re-activate them using pyuscope dev mode though if you want to play with them from the GUI itself.