https://github.com/mguludag/qtextrecognizer

A gui for tesseractOCR with some preprocessing image options (OpenCV) for improve character recognition
https://github.com/mguludag/qtextrecognizer

cpp dnn image-processing lstm opencv qt qt5 qt5-gui tesseract-ocr

Last synced: 11 months ago
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A gui for tesseractOCR with some preprocessing image options (OpenCV) for improve character recognition

• Host: GitHub
• URL: https://github.com/mguludag/qtextrecognizer
• Owner: mguludag
• License: mit
• Created: 2020-05-01T00:34:32.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2021-03-01T22:56:08.000Z (about 5 years ago)
• Last Synced: 2025-04-19T10:28:06.871Z (11 months ago)
• Topics: cpp, dnn, image-processing, lstm, opencv, qt, qt5, qt5-gui, tesseract-ocr
• Language: C
• Homepage:
• Size: 1.51 MB
• Stars: 28
• Watchers: 2
• Forks: 6
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Security: SECURITY.md

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README

          
# QTextRecognizer

A gui for tesseractOCR with some preprocessing image options with OpenCV for better recognize text from images

![GitHub top language](https://img.shields.io/github/languages/top/mguludag/QTextRecognizer) ![GitHub All Releases](https://img.shields.io/github/downloads/mguludag/QTextRecognizer/total) ![GitHub Releases](https://img.shields.io/github/downloads/mguludag/QTextRecognizer/latest/total) ![GitHub release (latest by date)](https://img.shields.io/github/v/release/mguludag/QTextRecognizer) ![GitHub Release Date](https://img.shields.io/github/release-date/mguludag/QTextRecognizer)



#### Additional downloads

* You have to download languages from tesseract-ocr tessdata github page.

## How to use?

* Open the app, drag and drop picture or use open button.

* Apply the preprocess options you want:

  * Rotate

  * Remove warp

  * Threshold

  * Brightness, contrast

* Select the text blocks by mouse also press **SHIFT** key for select multiple text blocks.

* Press Recognize text button and adjust the options you want:

  * Select language(s)

  * Select Page segmentation mode

  * Insert black/white list for characters you want

  * Select adaptive threshold before recognition you want

  * Press Start OCR and wait for the result

## Screenshots

![Main screen](img/1.png)

![Rotate image screen](img/2.png)

![Deskew image screen](img/3.png)

![Image adjustments screen](img/4.png)

![Autodetect text layout](img/5.png)

![Recognize text screen](img/6.png)

![Settings screen and dark skin](img/7.png)

## Building

#### Dependencies

* Qt 5.x and Qt Creator

* OpenCV 4.x

* Tesseract 4.1

* Leptonica