###########################################
Optical Character Recognition on Shunya OS
###########################################

Instructions on How to use OCR on Shunya OS
===========================================

OCR demo application allows user to recognize English characters in a
image/video by selecting a particular region of that interest.

Hardware required: Any board which is supported by Shunya OS, USB Video Camera, PC

Pre-requisites for running the OCR Demo
=======================================

.. code-block:: shell
   :linenos:

   sudo apt-get update
   sudo apt install python3-dev python3-pip tesseract git
   pip3 install pytesseract

OpenCV on python3

Steps to perform the OCR Demo:
===============================

Step 0:
-------

Clone this repository using git clone

.. code-block:: shell
   :linenos: 

   $ git clone https://github.com/shunyaos/ocr_demo.git
   $ cd ocr_demo

Step 1:
-------

**Run the test_roi.py**

.. code-block:: shell
   :linenos:

   $ python3 test_roi.py

Step 2:
-------

**Press ‘s’ and this will open a Roi selector window. Click, press and drag to select a region in which you want to detect text.**

.. note:: The text in the selected region should be clear and the background noise in the image should be less to get more accuracy.

Step 3:
-------

**You can retry the process by pressing ‘s’ or quit by pressing ‘q’ on the window**