Making OpenCV analysing a website and detecting if an attention mark appears

1

Hi Everybody,

I have quite some experience in programming with Pascal / Delphi and C++ and a little bit with python.

My question here is:
Can OpenCV “watch” a normal computer-screen directly without the use of a camera that looks onto a real screen.

What I want to do is watching a website that shows my photovoltaik-modules.
If one of the modules has a fault a red attention-mark is shown on the module.
See picture below

image
image709×837 94.4 KB

So can OpenCV be configured to use a browser-window as the source of the picture and take action = send an email if on one of the modules a red attention-mark appears?

At the moment a simple “no” would be sufficient.
or in case of yes a short estimation hw much work is it to set up such a recognition.

I am completely new to openCV.
So what do you estimate how much time will it take to set up this

5 to 20 hours of work?
20 to 80 hours?
more than 80 hours.?

best regards Stefan

2

you want web scraping, not computer vision.

3

Hi crackwitz thank you for answering.

So can you suggest a better suited software specialised on web-scraping?

Will such a web-scraping software be able to detect the attention-mark if
the resolution changes?
the position on the screen where the modules are shown changes?

I doubt that such a software is able to do this. But I haven’t searched with this term web-scaping.

4

not scaping. scraping. web scraping.

that means taking the web page apart, either calling the same web resources that it does, or using web sockets if it uses web sockets for the updates.

5

Maybe your website is already offering an API or a RSS to notify you? Web scraping is last resort when no structured data are offered by means of an API.