USB-Web-Cam becomes slower as darker the image becomes
Hello,
I'm new to v4l-development. I was able to get the raw image into my application successfully. But the current problem is not only in limited to my self-developed application.
All of my USB-webcams will get less FPS as darker the image becomes. In optimal cases I get around 30 frames per second. But if it's really dark I only get around 2-3 FPS.
I think that it might be the software gamma-correction. On v4l2ucp I didn't find a way to disable it.
What do you think is the way to fasten up the video-recording? How can I disable software gamma-correction if this is the reason?
Thanks in advance
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Hi!
Quoted 5 lines · [email protected] wrote:
Hello,
I'm new to v4l-development. I was able to get the raw image into my application successfully. But the current problem is not only in limited to my self-developed application.
All of my USB-webcams will get less FPS as darker the image becomes. In optimal cases I get around 30 frames per second. But if it's really dark I only get around 2-3 FPS.
I suppose the camera (or the driver) is increasing the exposure time to compensate for the lack of light and/or reduce noise.
Quoted 1 line
I think that it might be the software gamma-correction. On v4l2ucp I didn't find a way to disable it.
I don't think that will help. But you may try to turn off auto-exposure.
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Michael "Tired" Riepe <[email protected]> X-Tired: Each morning I get up I die a little