libjxl
ImageSharp
libjxl | ImageSharp | |
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85 | 34 | |
2,236 | 7,117 | |
28.2% | 0.9% | |
9.8 | 9.7 | |
about 12 hours ago | 1 day ago | |
C++ | C# | |
BSD 3-clause "New" or "Revised" License | GNU General Public License v3.0 or later |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
libjxl
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JPEG XL and Google's War Against It
> Regarding JPEG XL's mobile support, it makes sense it would see limited development if the company that manages one of the biggest mobile players has been the greatest restriction on their success. The lack of support also disincentivises manufacturers to prioritise support.
There was literally no involvement from any hardware vendor in the standardization of JPEG XL. It went from a Call for Proposals in Sept 2018 to Committee Draft in Aug 2019 with very little time for industry feedback. Contrast this with AV1 which had involvement from hardware vendors Intel, NVIDIA, Arm, AMD, Broadcom, Amlogic from the beginning as well as companies who ship media on hardware at scale such as Cisco, Netflix, Samsung and yes Google. These companies reviewed and provided significant feedback on the format that made it suitable for hardware implementation.
https://news.ycombinator.com/threads?id=JyrkiAlakuijala is a lead on the project and a Google employee, and active in JPEG XL development https://github.com/libjxl/libjxl/commits?author=jyrkialakuij...
- JPEG XL Reference Implementation
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JPEG XL and the Pareto Front
https://github.com/libjxl/libjxl/blob/main/doc/format_overvi... is a pretty detailed but good overview. The highlights are variable size DCT (up to 128x128), ANS entropy prediction, and chroma from luminance prediction. https://github.com/libjxl/libjxl/blob/main/doc/encode_effort... also gives a good breakdown of features by effort level.
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Compressing Text into Images
For JPEG XL, refer to its format overview [1]. In short its lossless mode uses a combination of multiple techniques: the rANS coding with an alias table, LZ77, reversible color transforms, a general vector quantization that subsumes palettes, a modified Haar transform and a learnable meta-adaptive decision tree for context modelling.
One good thing about JPEG XL is that its lossy mode also largely uses the same tool, with a major addition of specialized quantization and context modelling for low- and high-frequenty components.
[1] https://github.com/libjxl/libjxl/blob/main/doc/format_overvi...
- JPEG XL v0.9.0 Released
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Stripping Metadata
The cjxl source is here. If you spot any reason why -x strip=exif may not work, tell me.
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Www Which WASM Works
The problem is that the instructions for actually running the WASM file are not that clear... the docs the author mentions shows how to compile to WASM, which is easy enough, but then here's the instructions to make that actually work in the browser:
https://github.com/libjxl/libjxl/blob/main/tools/wasm_demo/R...
Yeah, you need some mysterious Python script, a JS service worker at runtime, choose whether you want the WASM or WASM_SIMD target, use a browser that supports Threads and SIMD if you chose that, make sure to serve everything with the appropriate custom HTTP headers... just reading that, I can see that to get this stuff working on non-browser WASM targets would likely require expertise in WASM, which is the point of the OP. WASM's UX is just not there yet.
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First automatic JPEG-XL cloud service
https://github.com/libjxl/libjxl#usage
> Specifically for JPEG files, the default cjxl behavior is to apply lossless recompression and the default djxl behavior is to reconstruct the original JPEG file (when the extension of the output file is .jpg).
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Why "sudo make install"?
I mean compiling a bleeding edge kicad, inkscape or jpeg-xl is easy. But will probably trash your system if you already have an older version installed.
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XYB JPEG: Perceptual Color Encoding Tested
But you look at your image viewer that could have the lossless indicator? (and there is an issue open to add this indicator to the jxl files)
https://github.com/libjxl/libjxl/issues/432
ImageSharp
- Is there a way to remove metadata from an image file?
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First automatic JPEG-XL cloud service
> High quality progressive decoding at reduced filesizes is a big positive for me.
This is really cool!
Honestly, I want to use regular progressive JPEGs for a current project of mine, but it seems that even that doesn't have support in all the tech stacks yet despite how long it's been around for, for example: https://github.com/SixLabors/ImageSharp/issues/449
Here's hoping that in the case of JPEG-XL this will be more commonplace!
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Unity’s New Pricing: A Wake-Up Call on the Importance of Open Source in Gaming
Here's an example:
https://github.com/SixLabors/ImageSharp/blob/main/LICENSE#L2...
https://news.ycombinator.com/item?id=33301518
Again, nothing stops someone from forking and maintaining.
Are you saying this is not legally enforceable? Because I am under the impression from my legal council it is. I can ask again to get more clarity.
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ChatGPT: Assisting you with your chords
ChatGPT is very good at being confidently incorrect. I asked it for some programming related thing and it gave me some code that used a class from a library as if it was generic, when it was not, and even made up some classes. You should also remember that things have since updated and things that might have been true back in 2020, may not be anymore. SixLabors.ImageSharp, for example has reworked some code since then and ChatGPT regularly messes up the methods that it uses, most notably Image.GetPixelSpan.
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Reasons to switch from python to dotnet ? Image processing involved
There is one in dot net too https://github.com/SixLabors/ImageSharp
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Compress/resize images
ImageSharp is another option, but could have licence implications.
- QR Code reader not dependant on System.Drawing
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GitHub - A Place to Fork
One example from the top of my head is ImageSharp.
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ImageSharp leaving the .NET Foundation due to licensing change
Library users should come together and fork the last open source version (https://github.com/SixLabors/ImageSharp/tree/v2.1.3) and maintain that together. Just having a version still available, even if it's got no new features, may be enough to make the Six Labors reconsider their approach because why pay for a library that can mostly work for free?
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TIL: mime types and static assets in Umbraco
Since .net doesn't yet support avif and neither does ImageSharp, files of this type just didn't have a MIME type available and trying to use them would result in a 404 error.
What are some alternatives?
qoi - The “Quite OK Image Format” for fast, lossless image compression
Magick.NET - The .NET library for ImageMagick
Android-Image-Filter - some android image filters
OpenCvSharp - OpenCV wrapper for .NET
DirectXMath - DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps
ImageProcessor - :camera: A fluent wrapper around System.Drawing for the processing of image files.
libavif - libavif - Library for encoding and decoding .avif files
Emgu CV - Emgu CV is a cross platform .Net wrapper to the OpenCV image processing library.
jxl-migrate - A simple Python script to migrate images to the JPEG XL (JXL) format
ImageResizer - The official repository for ImageResizer
squoosh - Make images smaller using best-in-class codecs, right in the browser.
MetadataExtractor - Extracts Exif, IPTC, XMP, ICC and other metadata from image, video and audio files