CDN Opencv.js - Javascript

Opencv.js is a JavaScript library that brings OpenCV functionality to the web. It allows developers to use powerful image processing algorithms on the client-side with minimal effort.

Getting started

To use Opencv.js in your project, simply include the following script tag in your HTML file:

<script src="https://docs.opencv.org/3.4/opencv.js"></script>

This will load the Opencv.js library from the OpenCV website's CDN.

Usage

Once the library is included, you can access the OpenCV functionality through the global cv object. For example, here's how to read an image from a URL and display it in a canvas:

const canvas = document.getElementById('myCanvas');
const ctx = canvas.getContext('2d');

cv.imreadAsync('https://example.com/image.jpg', (img) => {
  ctx.drawImage(cv.matFromImageData(img), 0, 0);
});

This code downloads an image from a URL, creates an OpenCV matrix from the image data, and then draws it onto a canvas.

Resources

Opencv.js comes with extensive documentation and examples on their website. You can also find many tutorials and sample projects online.

For more information on how to use Opencv.js, please refer to the official documentation: https://docs.opencv.org/3.4/d5/d10/tutorial_js_root.html