qoi
rawloader
qoi | rawloader | |
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1 | 3 | |
47 | 294 | |
- | - | |
7.7 | 5.4 | |
over 2 years ago | about 2 months ago | |
Rust | Rust | |
- | GNU Lesser General Public License v3.0 only |
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qoi
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QOI: Lossless Image Compression in O(n) Time
I really like the format, good job. I've been working on a rust implementation: https://github.com/steven-joruk/qoi
rawloader
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Announcing: ImageSieve, a tool to assist in sorting and archiving images and videos
I absolutely loved all the crates available that made my life very simple in many cases. I used (among others) the slint ui framework, kamadak-exif, img_hash, fast_image_resize and rawloader.
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QOI: Lossless Image Compression in O(n) Time
The simplest form is just to pack 10 or 12 bit values. There's all kinds of variations of that:
https://github.com/pedrocr/rawloader/blob/a59bb78d156277781a...
There are a few formats that use a curve and less bits. They do become lossy and doing dithering on decompress is useful to avoid banding.
The Nikon one you mention was only used very early and is decoded by decode_8bit_wtable() in that file. It's just looking up the 8 bit value in the table and then adding some randomness to prevent the banding.
What are some alternatives?
qoi - The “Quite OK Image Format” for fast, lossless image compression
dnglab - Camera RAW to DNG file format converter
qoi - Pure Go encoder/decoder of the QOI image format
fast_image_resize - Rust library for fast image resizing with using of SIMD instructions.
Zpng - Better lossless compression than PNG with a simpler algorithm
rawspeed - fast raw decoding library
slint - Slint is a declarative GUI toolkit to build native user interfaces for Rust, C++, or JavaScript apps.
image-sieve - GUI based tool to sort and categorize images written in Rust
msgpack-rust - MessagePack implementation for Rust / msgpack.org[Rust]
img-hash - A Rust library for calculating perceptual hash values of images
exif-rs - Exif parsing library written in pure Rust