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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

The Scene, QGraphicsScene

This class provides almost all methods required for manipulating multiple graphics items (QGraphicsItem), even though we only used it with a single QGraphicxPixmapItem in the previous example. In this section, we will review some of the most important functions in this class. As it was mentioned before, we'll mainly focus on the properties and methods required for our use case, since covering all methods, although they are all important, would be fruitless for the purpose of our book. We will skip the constructor functions of QGraphicsScene since they are simply used to take the dimensions of the scene and create a scene accordingly. As for the rest of the methods and properties, here they are, and for some of them that may not be too obvious, you can find a simple example code that you can try out with the Graphics_Viewer project we created...

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