fast_image_resize
rust-blog
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fast_image_resize | rust-blog | |
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3 | 63 | |
228 | 6,608 | |
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7.7 | 5.0 | |
6 days ago | about 1 month ago | |
Rust | Rust | |
Apache License 2.0 | Apache License 2.0 |
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fast_image_resize
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Rust/WebAssembly image processing library
Unfortunately mostly useless for professional applications.
It fails the most simple test from [0] in the online demo[1]. ImageMagic also has a page about this[2]. I.e. also try the 'city lights' test with the online demo to see it fail for the same reason.
The issue is that if you write code that deals with color you must understand color spaces and gamma. A non-linearly encoded color can't be plugged into any of the math you use to manipulate images and get meaningful results.
Almost all code I come across in the Rust ecosystem (or elsewhere no less) treats color as linear. But color incoming from image files that are not RAW, EXR or some TIF variant is almost /never/ linear.
The reason is that it is written by people who are (often very skilled) software developers but lack any basic understanding of color science.
And then it often takes convicing the maintainers first and the yonx before it is fixed. I'm speaking from multiple experiences here.
For example, the fast image resize crate[3] addressed the resp. issue I filed last Dec.[4] less than a week ago. From the crate being released in the wild to it adding an option to treat color correct almost 1.5 years passed.
This is not the same as forcing crate users to treat color correct btw. The crate added a function that calls a closure but a user who do not understand color science may not grok why this is needed and not use it.
I guess I'm saying there is also often an 'UX' issue that perpetuates the problem to the user side of the API after the crate itself addressed it somehow.
That said, there are some very good crates that abstract the resp. parts away to address the issue. E.g. [5].
[0] http://www.ericbrasseur.org/gamma.html?i=1#explanation
[1] https://silvia-odwyer.github.io/photon/demo.html
[2] https://legacy.imagemagick.org/Usage/resize/#resize_colorspa...
[3] https://docs.rs/fast_image_resize
[4] https://github.com/Cykooz/fast_image_resize/issues/3
[5] https://docs.rs/colstodian
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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.
- fast_image_resize - crate for fast image resizing with support of SIMD instructions.
rust-blog
- Common Rust Lifetime Misconceptions
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What are some good resources for experienced programmers new to Rust to learn about lifetimes?
Hands down the best resource (after you've had sufficient experience with Rust, especially so) - https://github.com/pretzelhammer/rust-blog/blob/master/posts/common-rust-lifetime-misconceptions.md
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How can a parameter type `T` be not long living enough?
I really really recommend reading this to understand lifetimes and generics in Rust better.
- What learning resource has had the greatest impact in elevating your understanding and knowledge of Rust?
- I do not understand why Sized bound prevents a trait from being used as a trait object.
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Lifetime annotations: why doesn't Rust?
It's already now that the elided lifetimes are not always correct, as pointed out in Common Rust Lifetime Misconceptions (No 5) by pretzelhammer.
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Anything C can do Rust can do Better
Common Rust Lifetime Misconceptions - kirill
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Resources on Lifetimes
Probably a bit more advanced than what you asked about, but still possibly useful: Common Rust Lifetime Misconceptions by /u/pretzelhammer.
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Borrow checker puzzles
This helped me a lot understanding Rust ownership rules and lifetimes: https://github.com/pretzelhammer/rust-blog/blob/master/posts/common-rust-lifetime-misconceptions.md
What are some alternatives?
async-graphql - A GraphQL server library implemented in Rust
zero-to-production - Code for "Zero To Production In Rust", a book on API development using Rust.
portable-simd - The testing ground for the future of portable SIMD in Rust
fluvio - Lean and mean distributed stream processing system written in rust and web assembly.
rawloader - rust library to extract the raw data and some metadata from digital camera images
static-analysis - ⚙️ A curated list of static analysis (SAST) tools and linters for all programming languages, config files, build tools, and more. The focus is on tools which improve code quality.
image-sieve - GUI based tool to sort and categorize images written in Rust
Rustlings - :crab: Small exercises to get you used to reading and writing Rust code!
exif-rs - Exif parsing library written in pure Rust
mini-redis - Incomplete Redis client and server implementation using Tokio - for learning purposes only
watchout - Automatically run scripts and reload images
polonius - Defines the Rust borrow checker.