luminance
=========
Converts an RGB image into a [grayscale luminance](http://en.wikipedia.org/wiki/Grayscale) image.  This is built on the [ndarray library](https://github.com/mikolalysenko/ndarray).

## Example

```javascript
//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:

<img src="https://raw.github.com/mikolalysenko/luminance/master/examples/lena.png">

## Install

    npm install luminance
    
## API

```javascript
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

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luminance

luminance

Example

Install

API

`luminance(img)`

`luminance(result, img)`

`luminance(red, green, blue)`

`luminance(result, red, green, blue)`

Credits

Keywords

Related posts

luminance

luminance

Example

Install

API

luminance(img)

luminance(result, img)

luminance(red, green, blue)

luminance(result, red, green, blue)

Credits

Keywords

Related posts

Malicious Chrome Extension Steals Meta Business Manager Exports and TOTP 2FA Seeds

AI Agent Submits PR to Matplotlib, Publishes Angry Blog Post After Rejection

`luminance(img)`

`luminance(result, img)`

`luminance(red, green, blue)`

`luminance(result, red, green, blue)`