artlimes / imagecolors-stream

A node module that pulls useful color information out of an image through a combination of ImageMagick color quantization algorithms and human fiddling.

imagecolors-stream

This is a fork of https://github.com/tobius/imagecolors, which is a node module that pulls useful color information out of an image through a combination of ImageMagick color quantization algorithms and human fiddling. This fork adds support for streams as input (additional to HTTP URLs and local file path).

Install

You can install via NPM.

[~] npm install https://github.com/erkstruwe/imagecolors-stream.git

Usage

Using this module is pretty straight forward.

// load module
var imagecolors = require('imagecolors');

/**
 * extract predominant colors from image
 * note: maximum is currently capped at 96, need to do load testing before raising
 * usage: extract(imagePath, numColors, callback)
 */
imagecolors.extract('./photo.jpg', 6, function(err, colors){
    if (!err){
        console.log('EXTRACTED');
        console.log(colors);
        console.log();
    }

    /**
     * convert colors to a custom palete
     * usage: convert(color_object, palette_json, callback)
     */
    imagecolors.convert(colors, './palette.json', function(err, colors){
        if (!err){
            console.log('CONVERTED');
            console.log(colors);
        }
    });
});

Note: There are also example assets in the examples folder to help get you started.

Return Format

This is what returned color objects look like.

[{
    pixels      : 208781,
    hex         : '#F0F0DC',
    labelHex    : '#444444',
    rgb         : { r: 240, g: 240, b: 220 },
    hsv         : { h: 60, s: 8, v: 94 },
    hsl         : { h: 60, s: 40, l: 90 },
    luminance   : '0.94',
    cmyk        : { c: 0, m: 0, y: 8, k: 6 },
    percent     : 10.07,
    family      : 'yellow'
}]