Re: [Motion-user] Light changes due to clouds triggering detection ?

[Henry B. T. Jr. <Henry@Linux-Meister.com>]

On Fri, July 10, 2009 05:02, Adam Bentley wrote:
> I have motion set with a mask to look at my pavement - my issue is
> that when its cloudy and the sun keeps shining through breaks in the
> clouds I'm getting motion detected due to the apparent colour shift on
> the paving stones.
>
> Does anyone have any suggestions on the best approach for tweaking the
> detection settings  to address this ?
>
> Cheers,
>
> Adam.
>

I've noticed the same issues ...  I've found that decreasing the contrast
a bit (say, 112 vice the default 128), setting minimum_motion_frames to 3,
and fiddling with the noise_level (mine is set at 48) helps significantly.
 I use "noise_tune off"; that seems to make things worse much of the time
due to the randomness of the "cloud effect", I'm supposing.  I still have
some false positives, but I'd rather have 2-3 of those a day than be
missing real events....