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Computer Vision with OpenCV 3 and Qt5

You're reading from   Computer Vision with OpenCV 3 and Qt5 Build visually appealing, multithreaded, cross-platform computer vision applications

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788472395
Length 486 pages
Edition 1st Edition
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Author (1):
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Amin Ahmadi Tazehkandi Amin Ahmadi Tazehkandi
Author Profile Icon Amin Ahmadi Tazehkandi
Amin Ahmadi Tazehkandi
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Table of Contents (14) Chapters Close

Preface 1. Introduction to OpenCV and Qt 2. Creating Our First Qt and OpenCV Project FREE CHAPTER 3. Creating a Comprehensive Qt+OpenCV Project 4. Mat and QImage 5. The Graphics View Framework 6. Image Processing in OpenCV 7. Features and Descriptors 8. Multithreading 9. Video Analysis 10. Debugging and Testing 11. Linking and Deployment 12. Qt Quick Applications 13. Other Books You May Enjoy

Multithreading in Qt

The Qt framework offers many different technologies to deal with multithreading in applications. The QThread class is used to handle all sorts of multithreading functionality and, as we'll see in this chapter, using it is also the most powerful and flexible way of handling threads in Qt framework. In addition to QThread, the Qt framework offers a number of other namespaces, classes, and functions that help with various multithreading requirements. Here's a list of them, before we see examples of how they are used:

  • QThread: This class is the base of all threads in the Qt framework. It can be subclassed to create new threads, in which case, you need to override the run method, or you can create new instances of it and move any Qt object (the QObject subclass) into a new thread by calling the moveToThread function.
  • QThreadPool:...
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