lwip - Light Weight Image Processor for NodeJS

•    C

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This module provides comprehensive, fast, and simple image processing and manipulation capabilities.There are no external runtime dependencies, which means you don't have to install anything else on your system.

image buffer manipulate process resize scale rotate jpeg jpg png gif crop blur sharpen batch flip mirror border padding hue saturation lightness alpha transparency fade opacity contain cover

context-blender - Photoshop-style blend modes for HTML Canvas Contexts

•    Javascript

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Adobe® Photoshop® has a variety of helpful blend modes for compositing images from multiple RGBA layers. This small library provides the same functionality for HTML Canvas Contexts, with the goal of producing the same results as Photoshop. This will also install node-canvas, which requires a working Cairo install. See https://github.com/Automattic/node-canvas#installation for more details.

html5 canvas photoshop layer context src-over screen multiply difference src-in overlay hardlight colordodge dodge colorburn burn darken darker lighten lighter exclusion softlight luminosity color hue saturation lightercolor darkercolor

glsl-hsl2rgb - HSL to RGB color conversion in GLSL

•    GLSL

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HSL to RGB color conversion in GLSL.Implementation from flixel-gdx. PRs for optimizations welcome.

glsl blend mode rgb hsl hue saturation sat light lightness stackgl ecosystem:stackgl glslify

glsl-hsv2rgb - Fast GLSL conversion from HSV color to RGB

•    C

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Fast conversion from HSV color to RGB – published to npm for use with glslify, originally sourced from this post written by Sam Hocevar.All of the values should range between 0 and 1. Returns the calculated RGB value as a vec3.

fast hsv hue saturation value rgb color convert glsl shader webgl glslify

glsl-lut - lookup table color transforms for glslify

•    Javascript

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Use a texture as a lookup table to apply color transforms in a shader. Original implementation from GPUImage, see here. For more details on the concept, see here.This is geared towards OpenGL ES, so no 3D textures are used, and the lookup table is 512x512 (using every 4th color).

glslify glsl webgl shader color transform lookup table lut instagram filter curves brightness contrast saturation hue levels grayscale

postcss-color-mod-function - Modify colors using the color-mod() function in CSS

•    Javascript

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PostCSS color-mod() Function lets you modify colors using the color-mod() function in CSS, following the CSS Color Module Level 4 specification. The color-mod() function accepts rgb(), legacy comma-separated rgb(), rgba(), hsl(), legacy comma-separated hsl(), hsla(), hwb(), and color-mod() colors, as well as 3, 4, 6, and 8 digit hex colors, and named colors without the need for additional plugins.

postcss css postcss-plugin colors colours modifications mods adjusters adjustments csswg rgba hsla white black red green blue alpha hue saturation lightness whiteness blackness tint shade blenda contrast

Chameleon - Javascript Library to handle Color calculations

•    Javascript

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You are very welcome to contribute. Just fork the git repository and create a new issue, send a pull request or contact me personally.

color colors hue saturation triadic analogous color-manipulation color-palette legibility

zipperposition - An automatic theorem prover in OCaml for typed logic with equality, datatypes and arithmetic, based on superposition+rewriting; supporting libraries for manipulating terms, formulas, clauses, etc

•    OCaml

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Automated theorem prover for first-order logic with equality and theories. Logic toolkit (logtk), designed primarily for first-order automated reasoning. It aims at providing basic types and algorithms (terms, unification, orderings, indexing, etc.) that can be factored out of several applications.

prover superposition ocaml experimental logic computer-science-algorithms prototype induction polymorphism rewriting cnf symbolic-computation saturation