chimper
rawloader
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chimper | rawloader | |
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1 | 3 | |
76 | 289 | |
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0.0 | 0.0 | |
over 1 year ago | 7 months ago | |
Rust | Rust | |
GNU General Public License v3.0 only | GNU Lesser General Public License v3.0 only |
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chimper
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Tracking mentions began in Dec 2020.
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
These kinds of formats have been somewhat explored by camera makers for their raw formats. Since the computing resources can be quite limited there are a few formats that try to occupy this space of simplicity with still some tricks for compression. Samsung's various SRW encodings remind me most of this:
https://github.com/pedrocr/rawloader/blob/a59bb78d156277781a...
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?
dnglab - Camera RAW to DNG file format converter
fast_image_resize - Rust library for fast image resizing with using of SIMD instructions.
rawspeed - fast raw decoding library
slint - Slint is a declarative GUI toolkit to build native user interfaces for Rust, C++, or JavaScript apps.
qoi - A rust implementation of the “Quite OK Image” format for fast, lossless image compression
qoi - The “Quite OK Image Format” for fast, lossless image compression
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
Zpng - Better lossless compression than PNG with a simpler algorithm
qoi - Pure Go encoder/decoder of the QOI image format