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Asked: 2026-05-26T15:18:47+00:00

I have a question that How to detect the change on the screen? Its

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I have a question that How to detect the change on the screen? Its position is not necessary but is possible to get its position it will be helpful. I searched it on the internet but not found any suitable answer. Now, I am making a program in C# and I have to detect a change on the screen. I tried to capture four screen shots per second and compare them. This method works but it badly effect on the performance of the PC.

I think it is easy to do in C or Assembly language (x86) because in assembly we can get access to video memory directly.

Is it possible to do in C#?

Code sample will be appreciated.

Project: Detect any change on full Screen camera monitoring software.

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1 Answer

  1. Editorial Team

    Are you really looking just for simple difference of what you see on your monitor? I doubt that would do the job.
    For motion detection from cam input you can take a look at Motion Detection Algorithms article on CodeProject.

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