opencv-wasm

OpenCV-WASM

Precompiled OpenCV 4.3.0 to JavaScript + WebAssembly for node.js environment.

In this WASM compiled OpenCV, there's no need to have OpenCV installed in the machine or using node-gyp. The entire OpenCV is already inside this package (opencv.js and opencv.wasm).

Examples

Code	Input	Output
dilation.js
templateMatching.js	source: template:

Installation

npm install opencv-wasm

Usage

Because this module is using (almost) the same code as the official OpenCV.js for the web, you can use the same documentation at the web: https://docs.opencv.org/3.4/d5/d10/tutorial_js_root.html

There are some minor initialization changes, because this module will be loaded synchronously instead of the OpenCV's default (asynchronously).

You can check the files inside examples folder as reference on how to initialize, loading images, and saving images.

Error Handling

By default, mistakes in code will produce error code. You can use the following snippet to translate the error code into meaningful statement from OpenCV.

const { cv, cvTranslateError } = require('opencv-wasm');

try {
    // Your OpenCV code
} catch (err) {
    console.log(cvTranslateError(cv, err));
}

Versioning

This npm module uses the following versioning number:

<opencv version>-<this module version>

For Example

4.3.0-1.0.0
OpenCV version 4.3.0
OpenCV-WASM Module version 1.0.0

Authors

• Ezzat Chamudi - ezhmd

See also the list of contributors who participated in this project.

License

Code and documentation copyright 2019 the OpenCV-WASM Project Authors.

OpenCV-WASM code is licensed under BSD-3-Clause. Images, logos, docs, and articles in this OpenCV-WASM project are released under CC-BY-SA-4.0.

Libraries, dependencies, and tools used in this project are tied with their own licenses respectively.