save-pixels

Saves an ndarray to an image.

Example

var zeros = require("zeros")
var savePixels = require("save-pixels")

//Create an image
var x = zeros([32, 32])
x.set(16, 16, 255)

//Save to a file
savePixels(x, "png").pipe(process.stdout)

This writes the following image to stdout:

<img src=https://raw.github.com/mikolalysenko/save-pixels/master/example/example.png>

Install

npm install save-pixels

require("save-pixels")(array, type[, options])

Saves an ndarray as an image with the given format

• array is an ndarray of pixels. Assumes that shape is [width, height, channels]

• type is the type of the image to save. Currently supported formats:

  • "jpeg", "jpg" - Joint Photographic Experts Group format
  • "gif" - Graphics Interchange Format
  • "png" - Portable Network Graphics format
  • "canvas" - A canvas element

• options is an object that alters saving behavior

  • quality is the Number to use for saved image quality

    • This can only be used with a "jpeg" image
    • It range between 1 (low quality) and 100 (high quality) inclusively

Returns A stream that you can pipe to serialize the result, or a canvas element if the type is "canvas".

Credits

(c) 2013 Mikola Lysenko. MIT License