clahe-rs
Reimplementation of opencv's CLAHE in pure rust. This includes implementing u16 -> u8 conversion which was missing in the other crates I tried.
Unlike the opencv version this:
- does not use threads (see future work, rayon could do this)
- does not do manual loop unrolls
- iterates over regions rather than lines during interpolation
Its unlikely this reaches the single-core throughput of the heavily optimized opencv version (though I tried to maintain the structure that makes it possible), if you are interested in making it faster let me know.
Examples
| Before | After |
|---|---|
 |
 |
| :----------------: | :--------------------: |
 |
 |
| :----------------: | :--------------------: |
 |
 |
Future work
- More performance testing
- Rayon threading
- Integrate into [imageproc crate](https://github.com/image-rs/imageproc]