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Qt 5 and OpenCV 4 Computer Vision Projects

You're reading from   Qt 5 and OpenCV 4 Computer Vision Projects Get up to speed with cross-platform computer vision app development by building seven practical projects

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Product type Paperback
Published in Jun 2019
Publisher Packt
ISBN-13 9781789532586
Length 348 pages
Edition 1st Edition
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Author (1):
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Zhuo Qingliang Zhuo Qingliang
Author Profile Icon Zhuo Qingliang
Zhuo Qingliang
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Table of Contents (11) Chapters Close

Preface 1. Building an Image Viewer FREE CHAPTER 2. Editing Images Like a Pro 3. Home Security Applications 4. Fun with Faces 5. Optical Character Recognition 6. Object Detection in Real Time 7. Real-Time Car Detection and Distance Measurement 8. Using OpenGL for the High-Speed Filtering of Images 9. Assessments 10. Other Books You May Enjoy

Optical Character Recognition

In the previous chapters, we did a lot of work with videos and cameras. We created applications (Gazer and Facetious) with which we can play video from webcams attached to our computers. We can also record videos, take photos, detect motion and faces, and apply masks to faces detected in the video feed in real time with these apps.

Now we will move our focus to the text in images. There are many situations in which we want to extract the text or characters from an image. In the area of computer vision, there is a technology called Optical Character Recognition (OCR) to do this kind of work automatically instead of transcribing the text manually. In this chapter, we will build a new application to extract text from images and scanned documents with Qt and a number of OCR libraries.

We will cover the following topics in this chapter:

  • Extracting text...
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