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Today's Topics:
1. Re: Remove the effects of sunlight (Kinney Baughman)
2. Re: Remove the effects of sunlight (Saito.k)
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Message: 1
Date: Fri, 26 Jan 2018 12:33:22 -0500
From: Kinney Baughman <baughma...@gmail.com>
To: Gordon <mot...@res-g2.com>, Motion discussion list
<motion-user@lists.sourceforge.net>
Subject: Re: [Motion-user] Remove the effects of sunlight
Message-ID:
<CAKpJUz7qJNrtxDtf_cE-shAB6HXzNu_2chfXw=pD0+=stqw...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I have struggled with this for years.
Short answer, IMHO, is there is no way to ignore light intensity changes.
I've tried every lightswitch value in the book and none of them work to my
satisfaction.
The best approach is to do as Gordon says. Create a mask file and apply
it.
If you're tracking light changes in a bird house, you might get good
results from this. I monitor the road in front of my house with the great
beyond behind it. I've determined my situation is hopeless.
The problem, as I understand it, has to do with motion having to use pixel
changes to determine motion. So, out of the box, a program that depends on
pixel changes from one frame to the next is going to have difficulty
filtering out the effects of light intensity changes, like a cloud moving
over the landscape.
I would love if someone could prove me wrong! :-)
On Fri, Jan 26, 2018 at 11:50 AM, Gordon <mot...@res-g2.com> wrote:
> If I understand the picture you sent correctly, I wonder if you could mask
> detection on the right wall section, or even into part of the floor. It
> looks like you drew a box around the part of the frame affected by
> sunlight, so possibly try masking that entire boxed section. The birds
> motion when they enter, and while they are in the birdhouse, probably fill
> up quite a bit of the rest of the frame. So even with the mask you should
> still get the motion detection events you want.
>
> ------------------------------
> *From: *"Miguel ?ngel" <ssl...@gmail.com>
> *To: *"Motion discussion list" <motion-user@lists.sourceforge.net>
> *Sent: *Friday, January 26, 2018 10:22:39 AM
> *Subject: *Re: [Motion-user] Remove the effects of sunlight
>
> ?It's difficult to deal with light intensity changes.
>
> You can try to set lightswitch setting to different numbers and/or adjust
> the threshold setting to higher values.
>
>
>
> --
> *Miguel ?ngel*
>
>
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Message: 2
Date: Sat, 27 Jan 2018 09:02:54 +0900
From: "Saito.k" <sait...@ibara.ne.jp>
To: motion <motion-user@lists.sourceforge.net>
Subject: Re: [Motion-user] Remove the effects of sunlight
Message-ID: <cfe47af2-0e63-930a-ce77-779988118...@ibara.ne.jp>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi, everyone
Thank you very much for giving me a lot of advice to motion beginners.
I will try lightswitch and mask_file.
--
_/_/_/_/_/_/_/_/_/_/_/_/_/_/
Kazz Site
https://twitter.com/saitoib
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