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