canny-edge-detector

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Canny edge detector

Installation

$ npm install canny-edge-detector

Usage

$3

Find edges in an image using the Canny algorithm.
Returns a greyscale image with the edges at options.brightness value.

__arguments__

* image - a greyscale Image
* options - an optional object

__options__

* lowThreshold: Low threshold for the hysteresis procedure (default: 10).
* highThreshold: High threshold for the hysteresis procedure (default: 30).
* gaussianBlur: Sigma parameter for the gaussian filter step (default: 1.1).
* brightness: Values assigned to each edge pixel on the result image (default: image.maxValue).

Example

``js
import cannyEdgeDetector from 'canny-edge-detector';
import Image from 'image-js';

Image.load('my-image.png').then((img) => {
const grey = img.grey();
const edge = cannyEdgeDetector(grey);
return edge.save('edge.png');
})
``

License

MIT

[npm-image]: https://img.shields.io/npm/v/canny-edge-detector.svg?style=flat-square
[npm-url]: https://npmjs.org/package/canny-edge-detector
[travis-image]: https://img.shields.io/travis/image-js/canny-edge-detector/master.svg?style=flat-square
[travis-url]: https://travis-ci.org/image-js/canny-edge-detector
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[download-url]: https://npmjs.org/package/canny-edge-detector