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75 lines
2.3 KiB
Markdown
75 lines
2.3 KiB
Markdown
# Rust ICC Management
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Fast and safe conversion between ICC profiles; in pure Rust.
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Supports CMYK⬌RGBX, RGBX⬌RGBX, RGBX⬌GRAY, LAB⬌RGBX and CMYK⬌LAB, GRAY⬌RGB, any 3/4 color profiles to RGB and vice versa. Also supports almost any to any Display Class ICC profiles up to 16 inks.
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## Example
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```rust
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let f_str = "./assets/dci_p3_profile.jpeg";
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let file = File::open(f_str).expect("Failed to open file");
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let img = image::ImageReader::open(f_str).unwrap().decode().unwrap();
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let rgb = img.to_rgb8();
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let mut decoder = JpegDecoder::new(BufReader::new(file)).unwrap();
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let icc = decoder.icc_profile().unwrap().unwrap();
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let color_profile = ColorProfile::new_from_slice(&icc).unwrap();
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let dest_profile = ColorProfile::new_srgb();
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let transform = color_profile
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.create_transform_8bit(&dest_profile, Layout::Rgb8, TransformOptions::default())
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.unwrap();
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let mut dst = vec![0u8; rgb.len()];
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for (src, dst) in rgb
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.chunks_exact(img.width() as usize * 3)
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.zip(dst.chunks_exact_mut(img.dimensions().0 as usize * 3))
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{
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transform
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.transform(
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&src[..img.dimensions().0 as usize * 3],
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&mut dst[..img.dimensions().0 as usize * 3],
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)
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.unwrap();
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}
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image::save_buffer(
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"v1.jpg",
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&dst,
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img.dimensions().0,
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img.dimensions().1,
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image::ExtendedColorType::Rgb8,
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)
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.unwrap();
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```
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## Benchmarks
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### ICC Transform 8-Bit
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Tests were ran with a 1997×1331 resolution image.
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| Conversion | time(NEON) | Time(AVX2) |
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|--------------------|:----------:|:----------:|
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| moxcms RGB⮕RGB | 2.68ms | 4.52ms |
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| moxcms LUT RGB⮕RGB | 7.18ms | 17.50ms |
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| moxcms RGBA⮕RGBA | 2.96ms | 4.83ms |
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| moxcms CMYK⮕RGBA | 11.86ms | 27.98ms |
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| lcms2 RGB⮕RGB | 13.1ms | 27.73ms |
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| lcms2 LUT RGB⮕RGB | 27.60ms | 58.26ms |
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| lcms2 RGBA⮕RGBA | 21.97ms | 35.70ms |
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| lcms2 CMYK⮕RGBA | 39.71ms | 79.40ms |
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| qcms RGB⮕RGB | 6.47ms | 4.59ms |
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| qcms LUT RGB⮕RGB | 26.72ms | 60.80ms |
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| qcms RGBA⮕RGBA | 6.83ms | 4.99ms |
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| qcms CMYK⮕RGBA | 25.97ms | 61.54ms |
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## License
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This project is licensed under either of
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- BSD-3-Clause License (see [LICENSE](LICENSE.md))
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- Apache License, Version 2.0 (see [LICENSE](LICENSE-APACHE.md))
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at your option.
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