luminance

Converts an RGB image into a grayscale luminance image. This is built on the ndarray library.

Example

//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:

Install

npm install luminance

API

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.

Credits

(c) 2013 Mikola Lysenko. MIT License