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Learn OpenCV 4 by Building Projects

You're reading from   Learn OpenCV 4 by Building Projects Build real-world computer vision and image processing applications with OpenCV and C++

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Product type Paperback
Published in Nov 2018
Publisher Packt
ISBN-13 9781789341225
Length 310 pages
Edition 2nd Edition
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Authors (3):
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David Millán Escrivá David Millán Escrivá
Author Profile Icon David Millán Escrivá
David Millán Escrivá
Prateek Joshi Prateek Joshi
Author Profile Icon Prateek Joshi
Prateek Joshi
Vinícius G. Mendonça Vinícius G. Mendonça
Author Profile Icon Vinícius G. Mendonça
Vinícius G. Mendonça
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Table of Contents (14) Chapters Close

Preface 1. Getting Started with OpenCV 2. An Introduction to the Basics of OpenCV FREE CHAPTER 3. Learning Graphical User Interfaces 4. Delving into Histogram and Filters 5. Automated Optical Inspection, Object Segmentation, and Detection 6. Learning Object Classification 7. Detecting Face Parts and Overlaying Masks 8. Video Surveillance, Background Modeling, and Morphological Operations 9. Learning Object Tracking 10. Developing Segmentation Algorithms for Text Recognition 11. Text Recognition with Tesseract 12. Deep Learning with OpenCV 13. Other Books You May Enjoy

Detecting Face Parts and Overlaying Masks

In Chapter 6, Learning Object Classification, we learned about object classification and how machine learning can be used to achieve it. In this chapter, we are going to learn how to detect and track different face parts. We will start the discussion by understanding the face detection pipeline and how it's built. We will then use this framework to detect face parts, such as the eyes, ears, mouth, and nose. Finally, we will learn how to overlay funny masks on these face parts in a live video.

By the end of this chapter, we should be familiar with the following topics:

  • Understanding Haar cascades
  • Integral images and why we need them
  • Building a generic face detection pipeline
  • Detecting and tracking faces, eyes, ears, noses, and mouths in a live video stream from the webcam
  • Automatically overlaying a face mask, sunglasses, and a funny...
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