new webcam automatic light adjustment, bad for motion detection
wanwan
is there a way through programming to turn off the annoying automatic
lighting? I tried to turn it off from the driver software, but it
still didn't take away the feature.
Old webcams didn't have this feature, so were much better for
programmers to use.
wanwan
I found the problem. The new Logitech webcam has a feature called Anti-
Flicker, which is really a light adjustment feature. It's the very
same feature that causes light flickering.
I have had the webcam for a few weeks and trusted the feature to be
what the name stands for. Bad for the Logitech engineers!
Jeremy Noring
Adjustments in brightness and contrast shouldn't set off a proper
motion detection algorithm (think about it: brightness and contrast do
not constitute motion). The nefarious Logitech engineers are probably
attempting to provide the best image quality based on current lighting
conditions, which is a pretty common thing to do in web cams, security
cams, etc.
It sounds like you've implemented a motion detection algorithm that
merely looks to see if there's a pixel difference between frames. For
the general case ("general" meaning: the entire world has cameras that
adjust to brightness conditions), your algorithm should be able to
recognize and ignore brightness and contrast changes.