| <div align="center"> | |
| <img width="200" height="200" | |
| src="https://s3.amazonaws.com/pix.iemoji.com/images/emoji/apple/ios-11/256/crayon.png"> | |
| <h1>@jimp/plugin-threshold</h1> | |
| <p>Lightens an image.</p> | |
| </div> | |
| This is useful as a simplified method for processing scanned drawings, signatures, etc | |
| ## Usage | |
| - @param {number} options object | |
| - max: A number auto limited between 0 - 255 | |
| - replace: (optional) A number auto limited between 0 - 255 (default 255) | |
| - autoGreyscale: (optional) A boolean whether to apply greyscale beforehand (default true) | |
| - @param {function(Error, Jimp)} cb (optional) a callback for when complete | |
| ```js | |
| import jimp from "jimp"; | |
| async function main() { | |
| const image = await jimp.read("test/image.png"); | |
| image.threshold({ max: 150 }); | |
| // or | |
| image.threshold({ max: 200, replace: 200, autoGreyscale: false }); | |
| } | |
| main(); | |
| ``` | |