Long overdue post, "Stable Filtering - Part 1", which discusses a seemingly overlooked filtering concept important to motion compensation filters: https://caseymuratori.com/blog_0035 Special treat: images of the total garbage produced by the h.264 / HEVC filters when applied multiple times.
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Replying to @cmuratori
If you want to apply a filter a gazillion times you can multiply it by itself, creating a filter that is equivalent to two applications, then repeat the process to make 4x, 8x etc. filters.
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Replying to @NoHatCoder @cmuratori
So I tried this, and the resulting filter does not look like it would produce anything remotely like what the article describes, it just becomes a blur filter that grows wider for each iteration.
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Replying to @NoHatCoder
Keep in mind that clamping is very important. Operating on the image successively means that you clamp to 0/255, and that is very relevant for "stability" sometimes...
12:15 PM - 7 Mar 2019
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