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Today's Topics:
1. Re: some comments on motion detection (tosiara)
2. jerky motion (somebody)
3. Re: jerky motion (tosiara)
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Message: 1
Date: Fri, 7 Jun 2019 18:02:24 +0300
From: tosiara <[email protected]>
To: Motion discussion list <[email protected]>
Subject: Re: [Motion-user] some comments on motion detection
Message-ID:
<CACHTdwQCT9Y1BY0wimfcY95M=vCaqeoiZ5t80FSQtU0QE=i...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
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 <[email protected]> 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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------------------------------
Message: 2
Date: Fri, 7 Jun 2019 09:40:26 -0600
From: somebody <[email protected]>
To: Motion discussion list <[email protected]>
Subject: [Motion-user] jerky motion
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8
I'm using motion (Version 4.2) with a Logitech HD Pro Webcam C920. I
have not been able to get rid of the jerky and distorted motion. The
video is smooth when using the webcam with Skype. Any suggestions?
Ubuntu 18.04.2
------------------------------
Message: 3
Date: Fri, 7 Jun 2019 23:17:31 +0300
From: tosiara <[email protected]>
To: Motion discussion list <[email protected]>
Subject: Re: [Motion-user] jerky motion
Message-ID:
<CACHTdwSxbm=iz5kMW3W7rtf7wEU7SdhzN7JtPGqSWqkqGj8V=a...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Can you record sample motion video and save motion log with -d 7?
On Fri, Jun 7, 2019, 18:57 somebody <[email protected]> wrote:
> I'm using motion (Version 4.2) with a Logitech HD Pro Webcam C920. I
> have not been able to get rid of the jerky and distorted motion. The
> video is smooth when using the webcam with Skype. Any suggestions?
>
> Ubuntu 18.04.2
>
>
>
>
> _______________________________________________
> Motion-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/motion-user
> https://motion-project.github.io/
>
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