GDI question

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test

Suppose I have a program in C# that has the ability to save images of say a
room.

Suppose I have a series of these images taken over a period of maybe an
hour.

How do I detect (apart from using my eyes) which one of these images is
different - ie; someone has walked into the room?

Is there a generous person willing to share some code with me?


Thanks in advance

Dave.
 
Suppose I have a program in C# that has the ability to save images of say a
room.

Suppose I have a series of these images taken over a period of maybe an
hour.

How do I detect (apart from using my eyes) which one of these images is
different - ie; someone has walked into the room?

Is there a generous person willing to share some code with me?
Click to expand...

No, it's lost in the sands of time. But basically you're looking for changes
between frames, and you'll need to threshold it to avoid false positives.
For example, the project we did was for an outdoors CCTV camera, and moving
trees and stuff meant that a relatively high threshold was needed. Indoors
you can get away with greater sensitivity. Over time, you can build up a
better idea of what's background, which means that any changes will be more
apparent.

Good luck, and have fun! :-)

Steve
 
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