Developed by Anugrah Mishra

Assignment for the position - Frontend Engineer

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Libraries used:

• Konva
• react-konva
• material-ui
• uuid

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Features

• by default, 5 images are loaded
• User can:
  • navigate through the images
  • view the current image number and total number of images
  • draw annotations on images
  • save annotations (associating annotations with images in the browser) by clicking on the Save button
  • download the annotations in a JSON file by clicking on the Submit button in the below format

          {
              "<IMAGE_ID>": [
                  // array of all bounding boxes of the image
                  {
                      "x1": "<number>", // left coordinate of the box
                      "y1": "<number>", // top coordinate of the box
                      "x2": "<number>", // right coordinate of the box
                      "y2": "<number>" // bottom coordinate of the box
                  }
              ]
          }

  • Add new images to the application by -- Pasting URL of the image OR uploading image from the system
• Files uploaded to the system will be validated for types
• saved annotations will be retained while navigating through the images

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Getting Started with Create React App

This project was bootstrapped with Create React App.

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.

The page will reload when you make changes.
You may also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

npm run eject

Note: this is a one-way operation. Once you eject, you can't go back!

If you aren't satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.

You don't have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.