无法使用pyTesseract读取文字

Question

I am trying to extract logo from the PDFs.

I am applying GaussianBlur, finding the contours and extracting only image. But Tesseract cannot read the text from that Image?

Answer 1

Removing the frame around the letters often helps tesseract recognize texts better. So, if you try your script with the following image, you'll have a better chance of reading the logo.

With that said, you might ask how you could achieve this for this logo and other logos in a similar fashion. I could think of a few ways off the top of my head but I think the most generic solution is likely to be a pipeline where text detection algorithms and OCR are combined.

1. Thus, you might want to check out this repository that provides a text detection algorithm based on R-CNN .

2. You can also step up your tesseract game by applying a few different image pre-processing techniques. I've recently written a pretty simple guide to Tesseract and some image pre-processing techniques. In case you'd like to check them out, here I'm sharing the links with you:

   • Getting started with Tesseract - Part I: Introduction

   • Getting started with Tesseract - Part II: Image Pre-processing

3. However, you're also interested in this particular logo, or font, you can also try training tesseract with this font by following the instructions given here .