How to let user upload image in dash canvas at runtime

The below tutorial provides a way to dynamically upload (through the user system at runtime) an image inside dash- canvas, on which the user can perform various functionality provided by the canvas.

Firstly, we will build an upload functionality using dcc.upload as below:

As mentioned in the official documentation,

We can use image-content property of canvas as below:

To read more about these functions visit the below GitHub repo :

Find the final entire code below:

We can further provide a download functionality using the callback function to let the user download the annotations made on the image in JSON format.

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