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change resolution for motion detect vs capture
Posted: Wed Jul 07, 2004 7:45 pm
by bzo
How about being able to change capture resolutions for detecting motion vs capturing images? For example you could use 320x240 for motion detection and when an event is triggered, switch to 640x480. It seems like this would minimize cpu utilization while allowing you to get the highest quality snapshots available from the camera.
Posted: Fri Jul 23, 2004 6:59 pm
by bzo
ok, now that I'm more familiar with how zm works, I now see that this may not practical. Given that zm uses a buffer of previous images, to provide images immediately prior to the alarm, this would make things kind of messy.
I suppose the lower resolution images could be upscaled to make things consistent, but I don't think this has any clear advantage over using the existing functionality to limit frame rate during capture, and letting zm use the full frame rate to record events.