Make text in image thinner for OCR

Question

I'm making an automated text recognition script with Python on Ubuntu.

I'm using Gocr and the recognition render is too low.

Exemple:

Output: _O4_4E34E_4_O4_

I suppose that the type in the image is too bold, so I'm asking if there is a way to make it thinner using an python library or a linux command.

Answer 1

You probably will need to apply a morphological operation like "erosion" on your image, e.g by using OpenCV. This will make structures thinner. To the cost of the quality, though.

Look here: https://opencv-python-tutroals.readthedocs.org/en/latest/py_tutorials/py_imgproc/py_morphological_ops/py_morphological_ops.html