#image-processing — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #image-processing, aggregated by home.social.
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Apply a shifting transformation to images in Python
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Apply a twisting transformation to images in Python
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Apply a fisheye transformation to images in Python
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If you want a modern ImageOptim replacement that does WebP (including conversion to WebP), I’m just playing with the open source Alic macOS app and it’s working great.
https://github.com/blopker/alic
The screenshot shows my settings for having it convert whatever is dropped on it into lossless WebP and save it with the same file name but with a .webp extension.
#web #design #dev #images #imageProcessing #WebP #compression #Alic #ImageOptim #openSource #macOS
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Hide an image inside another using secure steganography in Python
(This is the last in my series about steganography.)
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Decode images hidden inside other images by steganography in Python
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Use steganography to hide an image inside another image in Python
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Use steganography to hide encrypted messages in an image in Python
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Stop making visitors download pixels they cannot see. Five practical ways to optimize website images.
https://hackernoon.com/5-image-optimization-mistakes-that-can-slow-down-your-website #imageprocessing -
In 2003, Paul Eilers published a paper titled “A Perfect Smoother” [1], re-implementing and extending early ideas published by Whittaker in the 1920s [2].
The method is based on a penalised least square approach, also called Tikhonov regularization (also called ridge regression!) and is a very general approach to deal with smoothing noisy data, overcoming some of the limitations of the Savitzky-Golay method.
Read more on my recent blog post 👇
https://nirpyresearch.com/whittaker-smoothing/
[1] Paul H. C. Eilers (2003). A Perfect Smoother, Anal. Chem. 75 (14): 3631–3636.
[2] E. T. Whittaker (1922). On a New Method of Graduation, Proceedings of the Edinburgh Mathematical Society, 41: 63 – 75.#spectroscopy #smoothing #DataProcessing #ImageProcessing #Python #MachineLearning #Regression
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JPEG XL converter and .jxl viewer
Comments: https://news.ycombinator.com/item?id=49346404
#HackerNews #JPEGXL #JPEGConverter #imageProcessing #techNews
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Use steganography to hide messages in an image in Python
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Pipeline release! nf-core/lsmquant v1.0.3 - 1.0.3 - Excited Squid!
A pipeline for processing and analysis of light-sheet microscopy images.
Please see the changelog: https://github.com/nf-core/lsmquant/releases/tag/1.0.3#3dunet #imageanalysis #imageprocessing #lightsheetmicrocopy #segmentation #stitching #nfcore #openscience #nextflow #bioinformatics
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Pipeline release! nf-core/spatialaxe v1.0.1 - 1.0.1!
A bioinformatics best-practice processing and quality control pipeline for Xenium and Artera data
Please see the changelog: https://github.com/nf-core/spatialaxe/releases/tag/1.0.1#10xgenomics #atera #imageprocessing #spatial #spatialdataanalysis #spatialtranscriptomics #transcriptomics #xenium #nfcore #openscience #nextflow #bioinformatics
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Welcome to Qwen 3.0 Image Pro, the "ultimate" AI tool that promises to turn your dense, token-filled nightmares into high-definition, multilingual newspaper menus with microexpression-level detail 🙄📸! Because who doesn't want to put their existential dread into a 4.5k token layout that reads like the War and Peace of exam papers? 🤦♂️💡
https://www.qwencloud.com/models/qwen-image-3.0-pro #AItools #MultilingualTech #ImageProcessing #DigitalInnovation #ExistentialDread #HackerNews #ngated -
New episode of G'MIC Adventure (#7) ! 🐉
This time: building a variable-density Hilbert curve that reproduces an image using a single winding line, with local subdivision depth driven by luminance.
Follow the whole exploration step by step — iterative curve construction, quantized levels, and the bugs that got fixed along the way 😅
▶️ https://discuss.pixls.us/t/gmic-adventure-7-variable-density-hilbert-curve
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G'mic 4.0: Squaring the Pixel, Easier
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Crop an area to a certain aspect ratio in Python and tkinter
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John Tukey the Fast Fourier Transform (FFT) inventor, who coined both "bit" and "software" died exactly 26 years ago today.
The Fast Fourier Transform (FFT), one of the most important algorithms in signal processing and data analysis, was introduced by Tukey & Cooley in 1965.
In 1805, Gauss - studying the orbits of asteroids Pallas and Juno - came up with a method to interpolate their trajectories from discrete samples. What he came up with was mathematically very close to the modern FFT but Gauss never published that work, and didn’t analyze its computational complexity. It predated even Fourier’s 1822 work on heat diffusion - but without the framing or generalization that Cooley & Tukey would bring 160 years later.
In 1965, Cooley & Tukey published their now-famous algorithm that reduced the cost of computing a Discrete Fourier Transform from 𝑂(𝑛²) to 𝑂(𝑛 log𝑛). This leap made real-time signal processing and digital media compression feasible.
From radio telescopes to JPEGs, from audio codecs to quantum mechanics - the FFT is everywhere. It’s one of the most important (and elegant) algorithms of the 20th century - rooted in the genius of Gauss, but brought to life in the computer age.
#JohnTukey #FastFourierTransform #FFT #SignalProcessing #ComputerScience #Mathematics #Algorithm #DataScience #DigitalSignalProcessing #FourierTransform #ComputationalScience #ScientificComputing #HistoryOfScience #Innovation #CarlFriedrichGauss #JosephFourier #JamesCooley #STEM #Engineering #ArtificialIntelligence #MachineLearning #QuantumComputing #ImageProcessing #AudioProcessing #Statistics #TechHistory #Computing #Science #InnovationLegacy #OnThisDay
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Oh great, another 1000-word rant about image dithering from someone who "doesn't know much about it" but still wants to wax poetic about their pink pictures. 🤯 'Cool as f***' might as well be code for 'I just discovered a #Photoshop filter.' 🙄 #GroundbreakingTechInsight
https://dead.garden/blog/how-my-images-are-dithered.html #imageprocessing #digitalart #techrants #critique #creativity #HackerNews #ngated -
Did some more tweaking this afternoon. Now have a _really_ clean trace from inkscape. The SVG is still rough around t eh edges (literally), but here's the PNG!
I intend to render the vector down to normal paths instead of the. . .whatever it is inkscape does to do the tracing. Looking forward to figuring that out. Here's to not having to draw it all by hand!
#BladesInTheDark #TTRPG #BitD #DigitalArt #VectorArt #ImageProcessing
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Use drag handles to select an area for cropping in Python and tkinter
This method is a bit more precise than the previous click-and-drag method.
