[libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.

[tetsuya.nomura at soho-enterprise.com]

Dir Sirs and Madams

 

It might be already discussed in the other thread but It would be great if
you help us to develop the vision processing application with libcamera on
RaspberryPi4.

I'm evaluating libcamera and qcam by IMX219 image sensor on RaspberryPi4.

I can see the image of qcam and gstreamer, I can switch the image size from
full to VGA listed in imx219.c.

I can see AGC and AWB are working correctly, however, I am guessing AGC does
not work.

I neither cannot set the ANALOG GAIN nor DIGITAL GAIN by v4l2 control
commands.

 

I'd like to know how to activate the AGC function to handle the darker
condition.

Also it would be nice to know how to disable the AEC/AGC and set the desired
value by v4l2 commands from the application SW.

 

I am an expert to handle IMX219 image sensor, then I can provide wide
variety of FoV, high-speed binning mode enabling x2 speed than normal
binning mode, etc.

After knowing the information above, I can provide more versatile image
streaming application for vision processing with wide angle camera modules
up to 187 degree.

 

I really appreciate the valuable advice in advance.

 

Best Regards,

 

NOMURA

================================

Tetsuya NOMURA

================================

Soho Enterprise Ltd.

4-11-26 Gent BLDG 2F, Asahi-cho, Atsugi-shi, Kanagawa,

Japan  243-0014

URL: https://soho-enterprise.com

Mail:  <mailto:tetsuya.nomura at soho-enterprise.com>
tetsuya.nomura at soho-enterprise.com

Phone: +81-90-1839-1135

================================

 

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