OCR

Dependency

• python 3.8
• Flask

Build

Option 1. Docker docker-compose -f docker-compose.dev.yml up --build

Option 2. Manually install depedencies

apt-get update && apt-get install -y tesseract-ocr-eng
pip3 install -r requirements.txt
python3 -m flask run --host=0.0.0.0

Demo

About

The code serves the API for OCR. The program accepts two endpoints: image-sync and image.

Synchronous inference

The image-sync ednpoint receives base64 images

curl -POST "http://localhost:5000/image-sync" -d '{"image_data": "<b64 encoded image>"}'

and return a json response

{
"text": "<recognized text>"
}

Asynchronous inference

The image ednpoint receives base64 images for POST requests

curl -POST "http://localhost:5000/image" -d '{"image_data": "<b64 encoded image>"}'

and return a json response

{
"task_id": "<task id>"
}

After that, the results of the inference can be retrieved with GET request on the image ednpoint

curl -GET "http://localhost:5000/image" -d '{"task_id": "<task id>"}'

and return a json response if the inference is done

{
"task_id": "<recognized text>"
}

otherwise, return None

{
"task_id": null
}