Re: [Motion-user] some comments on motion detection

[tosiara <to...@gm...>]

Some of your concens may be addressed as soon as MrDave is back to development:
https://github.com/Motion-Project/motion/issues/941
With motion detection moved into a library with API, you will be able
to "plug" better detector, either physical PIR or software AI

On Thu, Jun 6, 2019 at 9:16 AM Graham Toal <gt...@gt...> wrote:
>
> Hi - I've been using motion on raspberry pies for a few years now.
>
> I have some thoughts I'ld like to pass on.  Motion's detection has too many false positives for my liking, and the offered solutions haven't ever really fixed it for me.  So...
>
> 1) perhaps a tweak to the algorithm, so that changed pixels which also change hue are weighted more strongly than changes in intensity, so that increases or decreases in light level don't register as strongly as an object moving over the display (which with colour cameras usually causes a change in pixel colour as well as intensity - not so true at night or in IR mode, but then the current algorithm would work as a fallback)
>
> (I know the downside of this is that someone could walk over a green lawn in green camo, but I'm not suggesting using hue changes *only* - just giving them a heavier weighting)
>
> 2) after detecting motion, the video could then be run through an external program supplied by the user which implements a user-written algorithm that returns motion/no-motion and allows the system to cancel that detection and do nothing further with the video.  (This can be done to some extent with the existing script hooks but maybe not as cleanly)
>
> 3) Could there be a mechanism to add some external trigger to supplement the motion detection, eg a PIR sensor or radar sensor - and have motion handle the video only if it detects motion in the video *and* the external trigger also has detected motion?  (and some users might want the option of "OR" rather than "AND" depending on their tolerance of false positives)
>
> just passing thoughts to consider some day...
>
> regards
>
> Graham
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