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Carl Pearson
2023-03-07 07:49:44 -07:00
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@@ -146,7 +146,7 @@ Finally, I use [Pandoc](https://github.com/jgm/pandoc) to convert that markdown
How do I decide whether a frame is "too similar" to a previous frame? How do I decide whether a frame is "too similar" to a previous frame?
I experimented with a few options and settled on the `dhash` function in `imagehash`. I experimented with a few options and settled on the `dhash` function in `imagehash`.
A description of dhash is provided [here](https://www.hackerfactor.com/blog/index.php?/archives/529-Kind-of-Like-That.html). A description of dhash is provided [here](https://web.archive.org/web/20230301000000*/https://www.hackerfactor.com/blog/index.php?/archives/529-Kind-of-Like-That.html).
In short, the difference hash works like this: In short, the difference hash works like this:
* Image is reduced to 9x8 (72 pixels) and grayscale. * Image is reduced to 9x8 (72 pixels) and grayscale.