A simple pythonic OCR engine using opencv and numpy.
Originally inspired by http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python
In order for OCR to be performed on a image, several steps must be performed on the source image. Segmentation is the process of identifying the regions of the image that represent characters.
This project uses rectangles to model segments.
Supervised learning with a classification problem
The classification problem consists in identifying to which class a observation belongs to (i.e.: which particular character is contained in a segment).
Supervised learning is a way of "teaching" a machine. Basically, an
algorithm is trained through examples (i.e.: this particular
segment contains the character
f). After training, the machine
should be able to apply its aquired knowledge to new data.
The k-NN algorithm, used in this project, is one of the simplest
Creating a example image with already classified characters, for training purposes. See ground truth.
How to understand this project
Unfortunately, documentation is a bit sparse at the moment (I gladly accept contributions). The project is well-structured, and most classes and functions have docstrings, so that's probably a good way to start.
If you need any help, don't hesitate to contact me. You can find my email on my github profile.
How to use
example.py for basic usage with the existing pre-grounded images.
You can use your own images, by placing them on the
Grounding images interactively can be accomplished by using
For more details see Issue 2