Converts an RGB image into a grayscale luminance image. This is built on the ndarray library.
//Load up a test image
var lena = require("lena")
//Convert to grayscale
var grayscale_lena = require("luminance")(lena)
//Write the resulting png to stdout
require("save-pixels")(grayscale_lena, "png").pipe(process.stdout)
Which creates the following image:
npm install luminance
var luminance = require("luminance")
luminance(img)Returns A gray scale version of img
luminance(result, img)Returns A gray scale version of img, the result is stored in result
luminance(red, green, blue)Returns A gray scale image with red, green and blue channels in the given ndarrays
luminance(result, red, green, blue)Returns A luminance image of red/green/blue with result stored in result.
(c) 2013 Mikola Lysenko. MIT License