blurhash.cr alternatives and similar shards
Based on the "Algorithms and Data structures" category.
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crystalline
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s2_cells
maps latitude and longitude to S2 Cells https://s2geometry.io/
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README
blurhash.cr 
A pure Crystal implementation of Blurhash. The API is stable, however the hashing function in either direction may not be.
Blurhash is an algorithm written by Dag Ågren for Wolt (woltapp/blurhash) that encodes an image into a short (~20-30 byte) ASCII string. When you decode the string back into an image, you get a gradient of colors that represent the original image. This can be useful for scenarios where you want an image placeholder before loading, or even to censor the contents of an image à la Mastodon.
Currently supports PNG and JPEG file types.
Installation
Library
- Add the dependency to your
shard.yml:
dependencies:
blurhash:
github: Sija/blurhash.cr
- Run
shards install
CLI
- Run
shards build --release
Usage
Library
require "blurhash"
puts Blurhash.encode(
x_components: 4,
y_components: 3,
path: Path["foo.png"]
)
CLI
$ ./bin/blurhash 4 3 foo.png
Contributing
- Fork it (https://github.com/Sija/blurhash.cr/fork)
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request
Contributors
- Sijawusz Pur Rahnama - creator and maintainer
*Note that all licence references and agreements mentioned in the blurhash.cr README section above
are relevant to that project's source code only.