Max-Min filter of image implemented in JavaScript. Both in Node.js and browser.
$ npm install maxmin-filter
I made it as an ndarray module. So, the simplest usage is with get-pixels and save-pixels as below.
const fs = require('fs')
const savePixels = require('save-pixels')
const getPixels = require('get-pixels')
const maxminFilter = require('maxmin-filter')
getPixels('src.png', (err, pixels) => {
if (err) {
throw err
}
let filtered = maxminFilter(pixels)
savePixels(filtered, 'png').pipe(fs.createWriteStream('dist.png'))
})Returns a thresholded ndarray.
pixels- an ndarray whose shape is [width, height, channels].options.size- the filter size.