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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

Real-Time Car Detection and Distance Measurement

In the previous chapter, we learned how to detect objects using the OpenCV library, both via the cascade classifiers approach and the deep learning approach. In this chapter, we will discuss how to measure the distance between the detected objects or between the object of interest and our camera. We will detect cars in a new application and measure the distance between cars and the distance between a car and the camera.

The following topics will be covered in this chapter:

  • Detecting cars using the YOLOv3 model with OpenCV
  • Methods to measure distance in different view angles
  • Measuring the distance between cars in the bird's eye view
  • Measuring the distance between a car and the camera in the eye-level view
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