Pixel Annotation Tool in React

Introduction

It's a React version of PixelAnnotationTool. The implementation borrows ideas from different repos, including:

The tool also uses many excellent packages, such as:

npm install

npm start

I supervised a few engineers in Deltron Intelligence to extend this app for production use. See the figure below:

Key technical challenges have been addressed in another of my repo: emscripten-vision-react-example

Solve anti-aliasing issue by using findContours and drawContours to handle pixels at edge.