Difference between Simple & Gaussian?

oldrolla

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Hi all....

Can someone pls explain the diff between Simple and Gaussian algorithims if its not too hard?
 

Del Boy

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To put it really simply: Simple will be linear, whereas Gaussian will use the bell curve.

Depends what you are talking about? I can probably explain the exact situation in a more real-world analogy which might be technically wrong but actually surprisingly similar.

Ah... just realised this is Blue Iris... which function? Anything that requires sampling than Gaussian will end up with a smoother image vs Simple, but Simple will use less CPU power.
 

oldrolla

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To put it really simply: Simple will be linear, whereas Gaussian will use the bell curve.

Depends what you are talking about? I can probably explain the exact situation in a more real-world analogy which might be technically wrong but actually surprisingly similar.

Ah... just realised this is Blue Iris... which function? Anything that requires sampling than Gaussian will end up with a smoother image vs Simple, but Simple will use less CPU power.
Yes..... its the type of algorithim used under the trigger function.

Thanks.
 

jmburton2001

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The Simple method uses the least CPU time by doing a basic comparison between the current frame and a reference frame (the background).

The Gaussian method is much more complex, and therefore uses a bit more CPU. This method uses a set of "mixtures" allowing it to be more flexible with pixels which are often changing, such as with leaves on a tree in a breeze. It also allows for longer persistence--it takes longer for a change to be adopted as the new background.

The Gaussian algorithm tends to work best in conjunction with the Cancel shadows feature and may still struggle with scenes where sun and clouds quickly change the lighting.
 
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