diff image utils

Diff image to check whether objects have changed.

Depends on SSIM and opencv.

Install

install opencv 3.x

For linux

git clone https://github.com/opencv/opencv
mkdir opencv/build
cd opencv/build
cmake ..
sudo make install

For mac

brew tap homebrew/science
brew install opencv@3
brew link --force opencv@3

install npm package

npm install @sigodenjs/imagediff

Usage

const { diffFactor, diffImage } = require('..');

const img1 = fs.readFileSync("img1.jpg");
const img2 = fs.readFileSync("img2.jpg");
const factor = diffFactor(img1, img2);
const img = diffImage(img1, img2);
fs.writeFileSync("/tmp/imgdiff.jpg", img);

| img1 | img2 | diff | score | | --------------------------- | --------------------------- | -------------------------- | ----- | | | | | 0.047 | | | | | 0 |

License

Copyright (c) 2018 sigoden

Licensed under the MIT license.