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Author Topic: Detect change in marked area  (Read 13325 times)

kgp43

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Detect change in marked area
« on: March 03, 2016, 11:03 AM »
Hi,

I just found this brilliant forum and hope some of you guys will be able to help me out :)

A windows program that will detect a change in a "marked/selected" area of the screen, and play a sound if it changes.

Example:
  • Start program
  • Select what area of the screen to monitor
  • Select sound file to play
  • click start button

The software will then "monitor" the selected area of the screen and play the sound file it it changes.

This will be used to monitor a game interface (window mode) and alert me if something changes (in a defined area of the window).


I hope one of you find this exciting and decide to give it a try :)

Ath

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Re: Detect change in marked area
« Reply #1 on: March 03, 2016, 03:05 PM »
Exactly the same request has been posted on this forum some time ago, but I don't recall if it was answered... :-[

4wd

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Re: Detect change in marked area
« Reply #2 on: March 03, 2016, 08:05 PM »
Exactly the same request has been posted on this forum some time ago, but I don't recall if it was answered... :-[

If it was this you were thinking of it wasn't ... but there is: Skrommel's PixelNotifier
« Last Edit: March 03, 2016, 08:19 PM by 4wd »

lhatch

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Re: Detect change in marked area
« Reply #3 on: December 10, 2021, 10:04 AM »
Sorry to revive an old post, but I too need this. 

I did pulled Pixelnotifier program and do not understand it.  I want to monitor an area of the screen (not a pixel) and if a % different change happened make a sound and launch a program maybe.  I would use it to monitor a video camera windows for change.  Sure other will use it for stock symbol changes and more.

I did have a program from years ago in autohotkey from Skrommel, but it never worked and I did not follow up with him.  Hoping someone has written something like that.  Or better documentation for pixel notifier.

I can upload the Skrommel code I have if needed.

Thanks.

user45454

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Re: Detect change in marked area
« Reply #4 on: March 24, 2022, 04:37 PM »
Yes, Lets revive this yet post again, I would realy like a program like this!

Usage: I would use a webcam pointed to my heater (see picture)
The program could watch the stream or I can snap picutures at intervalls that the program could look at.
If the ALARM lamp turns red = run a program.
Alarm is the lamp marked with an "!" in a rectangle and it can turn red or stay off.
Vatten.jpgDetect change in marked area

Alarm is the most important, but if possible I would like to look at the other lights to.


publicdomain

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Re: Detect change in marked area
« Reply #5 on: March 24, 2022, 07:39 PM »
If the ALARM lamp turns red = run a program.

Hi! I have code for this (GetWindowRect + percentage difference between images).

If you're having the webcam feed visible via webcam viewer program, this is a small app which can be put together quickly :)

Please confirm.
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« Last Edit: April 05, 2022, 11:26 PM by publicdomain »

publicdomain

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Re: Detect change in marked area
« Reply #6 on: April 05, 2022, 06:50 PM »
My name's Victor but do feel free to call me Vic!

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