img2braille
Version:
Dynamically converts an image to braille (ASCII) art
112 lines (92 loc) • 6.95 kB
Markdown


JavaScript utility to generate braille (unicode) text from an image.
## Installation
You may install this package with npm using:
```
npm install img2braille
```
## Usage
After importing the package into your project, a `braillefy` method will be accessible to you. This function accepts 3 arguments, as described below:
- `imageURL` (string) - The source URL of the target image. This can be represented as either a local or remote path.
- `asciiWidth` (integer) - The desired width of the generated ASCII.
- `options` - An object with following (all optional):
- `dither` (boolean) - If truthy, a dithering effect will be applied to the output which will produce an overall cleaner/smoother result.
- `invert` (boolean) - If truthy, the background colors will be inverted (light -> dark). This is especially useful in cases where you'd like to match a certain background color scheme.
- `lineSeparator` (string) - Character of which to succeed each end-of-line. Default: `\n` (newline).
- `colors` - An object representing RGB threshold levels to be applied during generation. Minimum: 0.01 - Maximum: 10. Default: `{ red: 1, green: 1, blue: 1 }`.
```
const { braillefy } = require('img2braille');
(async () => {
const asciiOpts = {
dither: false,
invert: false,
};
const result = await braillefy('https://i.nuuls.com/LAOzc.png', 30, asciiOpts);
console.log(result);
/*
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣯⣿⣿⣿⣿⣷⡿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣫⣵⣿⣿⣿⣿⣿⣿⣿⣷⡻⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⡿⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⡿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣽⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣳⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣷⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣯⢿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣟⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⣿⣿⣿⣿
⣿⣿⣿⣿⣿⠍⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠉⠄⠄⠄⠄⠄⠄⠙⢿⣿
⣿⣿⡿⠉⠄⠄⠄⠄⢤⣶⣾⣿⣿⠿⠷⠲⢶⣦⡄⠄⠄⠄⢀⣀⣀⣤⣤⣤⣤⣹
⣿⡿⠁⠄⠄⠄⠄⠄⠄⠉⠛⠻⠇⠈⠁⠄⠄⡿⣿⣿⣿⣿⣿⣿⠋⠄⠄⡀⢿⢿
⣿⡇⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠈⠉⠛⠛⠃⠄⠄⠄⠄⣴⣾
⣿⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠠⠄⠄⠄⣀⣹⣿
⣿⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⢀⣴⣶⣿⣿⣿⣿
⣿⣆⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⢀⣴⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣶⣤⣀⡀⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⢀⣀⣴⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣷⣶⣶⣤⣤⣤⣤⣤⣤⣤⣤⣴⣶⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
*/
/* Dithering (dither: true):
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢯⣫⢯⢾⢽⢵⡻⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⣯⡳⡯⣞⡽⡽⡽⡵⣯⣳⢽⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⡿⣫⣞⡽⣝⡮⡯⣯⣫⢯⣞⢮⢷⡹⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⡿⡽⡵⣳⢽⡳⡽⣽⡺⡮⡷⡽⡽⡽⣝⣞⢿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣫⢯⢯⣳⢯⢯⣻⣺⡺⡽⡽⣝⡽⣺⢵⣫⢞⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣳⣳⣫⢗⣯⡳⡯⣞⡮⡯⡯⣯⣺⢽⣺⢽⣺⣝⡮⢿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣗⣗⣗⡽⣝⡮⡯⣻⢮⢯⣫⢯⢞⡮⡷⣝⣗⣗⣗⡽⣝⢿⣿⣿⣿
⣿⣿⣿⣿⣿⢕⢕⢕⢝⢕⢝⢍⢇⢏⢝⢬⢭⠱⡍⡎⡎⡦⡱⡔⣜⢔⡕⡭⣻⣿
⣿⣿⡿⡹⡢⡣⣣⢣⢳⣵⣿⣿⡿⠟⠞⠞⢾⣮⡎⡇⢏⢎⢎⣎⣎⡦⡧⣧⣲⣹
⣿⡿⡱⡱⡕⣝⢜⡜⣕⢭⢛⡻⢅⠈⡁⠠⠄⡿⢯⣿⣿⣿⣿⡿⠋⠐⠄⡀⢿⢯
⣿⢇⢗⢕⡝⣜⢜⢼⢸⢜⢜⢜⢕⢕⢪⢪⠪⡪⡪⣪⢪⢫⢫⢣⢤⢰⢰⢰⣱⣿
⣿⢱⢕⢇⢧⢣⢳⡱⡣⡳⡱⡕⡕⡕⡕⡕⡕⡕⡝⡸⡨⢕⠕⠕⢅⢇⢕⢥⣹⣿
⣿⢸⢜⢎⢎⢧⢣⢇⢏⢮⢪⠸⡨⢌⢌⢌⢈⢄⢡⠠⢄⡢⡢⡱⣵⣶⣿⣿⣿⣿
⣿⡮⡪⢎⢧⢳⢱⢣⢳⢱⢣⢫⢪⢪⢢⢣⢣⢣⢣⢫⢕⢪⣺⣾⣿⣿⣿⣿⣿⣿
⢯⡻⡮⣮⣪⢪⢪⢕⢭⢪⢣⢫⢪⢕⢭⢪⢕⢕⢕⣕⡵⣻⣺⣺⣻⣿⣿⣿⣿⣿
⡯⣯⣻⣺⣺⣳⣳⢵⢵⢵⣹⣜⢵⢵⢵⢵⢵⡳⣯⣺⢽⢵⣳⣳⣳⣻⣿⣿⣿⣿
⡯⣞⣞⣞⣞⣞⢾⢽⢽⢽⣺⣺⢽⢽⢽⢽⢽⢽⣺⣺⢽⢽⣺⣺⣺⣺⣿⣿⣿⣿
*/
/* Inverted with dithering (invert: true):
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⡐⠔⡐⡁⡂⡊⢄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⢀⠐⢌⢐⠡⢂⢂⢂⢊⠐⠌⡂⠄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⢀⠔⠡⢂⠢⢑⢐⠐⠔⡐⠡⡑⡈⢆⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⢀⢂⢊⠌⡂⢌⢂⠂⢅⢑⢈⢂⢂⢂⠢⠡⡀⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠔⡐⡐⠌⡐⡐⠄⠅⢅⢂⢂⠢⢂⠅⡊⠔⡡⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠌⠌⠔⡨⠐⢌⢐⠡⢑⢐⢐⠐⠅⡂⠅⡂⠅⠢⢑⡀⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠨⠨⠨⢂⠢⢑⢐⠄⡑⡐⠔⡐⡡⢑⢈⠢⠨⠨⠨⢂⠢⡀⠄⠄⠄
⠄⠄⠄⠄⠄⡪⡪⡪⡢⡪⡢⡲⡸⡰⡢⡓⡒⣎⢲⢱⢱⢙⢎⢫⠣⡫⢪⢒⠄⠄
⠄⠄⢀⢆⢝⢜⠜⡜⡌⠊⠄⠄⢀⣠⣡⣡⡁⠑⢱⢸⡰⡱⡱⠱⠱⢙⢘⠘⠍⠆
⠄⢀⢎⢎⢪⠢⡣⢣⠪⡒⡤⢄⡺⣷⢾⣟⣿⢀⡐⠄⠄⠄⠄⢀⣴⣯⣿⢿⡀⡐
⠄⡸⡨⡪⢢⠣⡣⡃⡇⡣⡣⡣⡪⡪⡕⡕⣕⢕⢕⠕⡕⡔⡔⡜⡛⡏⡏⡏⠎⠄
⠄⡎⡪⡸⡘⡜⡌⢎⢜⢌⢎⢪⢪⢪⢪⢪⢪⢪⢢⢇⢗⡪⣪⣪⡺⡸⡪⡚⠆⠄
⠄⡇⡣⡱⡱⡘⡜⡸⡰⡑⡕⣇⢗⡳⡳⡳⡷⡻⡞⣟⡻⢝⢝⢎⠊⠉⠄⠄⠄⠄
⠄⢑⢕⡱⡘⡌⡎⡜⡌⡎⡜⡔⡕⡕⡝⡜⡜⡜⡜⡔⡪⡕⠅⠁⠄⠄⠄⠄⠄⠄
⡐⢄⢑⠑⠕⡕⡕⡪⡒⡕⡜⡔⡕⡪⡒⡕⡪⡪⡪⠪⢊⠄⠅⠅⠄⠄⠄⠄⠄⠄
⢐⠐⠄⠅⠅⠌⠌⡊⡊⡊⠆⠣⡊⡊⡊⡊⡊⢌⠐⠅⡂⡊⠌⠌⠌⠄⠄⠄⠄⠄
⢐⠡⠡⠡⠡⠡⡁⡂⡂⡂⠅⠅⡂⡂⡂⡂⡂⡂⠅⠅⡂⡂⠅⠅⠅⠅⠄⠄⠄⠄
*/
})();
```
See the examples folder provided in the repo for more information.
<br>
<hr>
<br>
<i>Originally masterminded by the creator of https://505e06b2.github.io/Image-to-Braille, this utility has been refactored and converted into a node.js package.</i>