"moving average" of last 3 images

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Hi everyone,
I have about 1000 images and I want to remove the images that changes drastically from the past 3 images in the vector. So I want to find a way to dynamically keep saving mean of last 3 images in a vectore and see how much the next image in the loop changes from these values. How do I do that?
Thanks

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Image Analyst
Image Analyst 2022-3-14
That's what I do in the attached demo, but for just the one prior frame. You'll see that it's easy to modify to average more prior frames on line 223. Adapt as needed.

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