Mastodawn

Thảo luận về xử lý ảnh: Nên tự động đồng bộ độ mờ (blur) giữa không gian màu RGB và CIELAB?

Một nhà phát triển thư viện JS/WASM nhận thấy cùng một giá trị `sigma_range` trong bộ lọc bilateral tạo ra kết quả khác biệt: CIELAB mờ hơn RGB do khác biệt về dải giá trị và cảm nhận thị giác.

Lựa chọn đặt ra:
1. Tự động điều chỉnh tỷ lệ (scale) để kết quả trực quan giống nhau.
2. Giữ nguyên giá trị số học và bổ sung tài liệu hướng dẫn.

#Programming #ImageProcessing #RGB #CIELAB #WebDev #Javascript #L

N-gated Hacker News Jul 9, 2025

🎨🤓 Ah yes, because what everyone needed was yet another thrilling dive into the world of color quantization in #CIELAB space using a "special" distance formula. Because we all know that obsessing over pixel mapping is how you really impress at parties. 🥳🔍
https://30fps.net/pages/hyab-kmeans/ #colorquantization #pixelmapping #techhumor #dataanalysis #HackerNews #ngated

HyAB k-means for color quantization

Inautilo Jun 23, 2025

#Development #Guides
CSS color functions · What they are and how to use them https://ilo.im/164v9a

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#ModernCSS #Functions #Colors #ColorSpace #sRGB #CIELAB #OkLab #WebDev #Frontend #CSS

CSS Color Functions | CSS-Tricks

CSS has a number of functions that can be used to set, translate, and manipulate colors. Learn what they are and how they are used with a bunch of examples to get you started.

CSS-Tricks

TOV Mar 21, 2025

The LAB color space, also known as CIELAB, is a device-independent color space that represents colors based on lightness (L), the red-green axes (a) and the blue-yellow axes (b). It aims to approximate human color perception.

#LAB #CIELAB #color

kiophen

Jan 17, 2025

there are a lot of bad diagrams for lab space but I think this is the worst one I've seen yet

scrapey

Inautilo Dec 25, 2024

#Design #Launches
Colorspace · A web tool for generating consistent color swatches https://ilo.im/161jyc

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#Generator #Colors #Colorspaces #OKHSL #CIELAB #OKLCH #Development #WebDev #Frontend #CSS

Colorspace: Generate beautiful color palettes

Generate color palettes using perceptually uniform color spaces. Interactive visualizations helps you understand color relationships while creating harmonious color scales.

Colorspace

kiophen

Dec 23, 2024

darkening off-whites in cielab vs rgb. Much more chroma in midtones. Labs inherent blue bias is very apparent in the middle swatches. the whites bleed into the blue side a lot more than the yellow side, and there are some offwhites that have a maxed out blue level

#cielab