serverless-tesseract

Serverless Tesseract plugin

A Serverless plugin to easily add Tesseract OCR engine to your deployment. Builds tesseract for you in a docker container.

Installation and Configuration

npm install --save serverless-tesseract

Add the plugin to your serverless.yml file and configure:

plugins:
  - serverless-tesseract
 
custom:
  # This section is optional, as well as all of its keys. 
  # Defaults are shown in the example. 
  tesseract:
    version: 4.0.0
    leptonica_version: 1.76.0
    tessdata: "osd eng" # Add any other languages rus, deu, ... 
    tessdata_url: https://github.com/tesseract-ocr/tessdata/raw/master/
    # Other obvious choices are: 
    #   https://github.com/tesseract-ocr/tessdata_fast/raw/master/ 
    #   https://github.com/tesseract-ocr/tessdata_best/raw/master/ 
    # The fast ones are used by Ubuntu and Debian by default 

Then run sls deploy or sls package as usual.

Usage

This plugins adds tesseract-standalone directory to your build with its executable, libs and tessdata and convenience script tesseract to the root of your project. You may call it directly or add it to path:

LAMBDA_TASK_ROOT = os.environ.get('LAMBDA_TASK_ROOT', os.path.dirname(__file__))
os.environ["PATH"] = LAMBDA_TASK_ROOT + os.pathsep + os.environ['PATH']

Extra commands

This plugin defines commands to manufacture and clean artifacts without packaging them:

sls tesseract create
sls tesseract clean