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20 lines
504 B
20 lines
504 B
3 years ago
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# dhash
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A simple DHash calculator in Rust.
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## What's a "DHash"?
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A DHash is a image [perceptual
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hashing](https://en.wikipedia.org/wiki/Perceptual_hashing) in which the image
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is reduced to 9x8 pixels and have it converted to grayscale. Each pixel is
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compared to the next: if it is whiter, the hash produces a 0 bit; if if is
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darker, it produces a 1. The final result is a 64-bit hash for the image.
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## Running
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Simply call `dhash <filename>`.
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## License
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GNU AFFERO GENERAL PUBLIC LICENSE, Version 3.
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