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Learning OpenCV 5 Computer Vision with Python

You're reading from Learning OpenCV 5 Computer Vision with Python Tackle computer vision and machine learning with the newest tools, techniques and algorithms

Product type Paperback

Published in Jul 2025

Publisher Packt

ISBN-13 9781803230221

Length

Edition 4th Edition

Concepts

Computer Vision

Authors (2):

Joe Minichino

Joseph Howse

View More author details

Table of Contents (12) Chapters

1. Learning OpenCV 5 Computer Vision with Python, Fourth Edition: Tackle tools, techniques, and algorithms for computer vision and machine learning FREE CHAPTER

2. Setting Up OpenCV

3. Handling Files, Cameras, and GUIs

4. Processing Images with OpenCV

5. Detecting and Recognizing Faces

6. Retrieving Images and Searching Using Image Descriptors

7. Building Custom Object Detectors

8. Tracking Objects

9. Camera Models and Augmented Reality

10. Introduction to Neural Networks with OpenCV

11. OpenCV Applications at Scale

Appendix A: Bending Color Space with the Curves Filter

Summary

Technical requirements

This chapter uses Python, OpenCV, and NumPy. In regards to OpenCV, we use the optional opencv_contrib modules, which include additional algorithms for keypoint detection and matching. To enable theSURF algorithm (whichis patented and not free for commercial use), we must configure the opencv_contrib modules with the OPENCV_ENABLE_NONFREE flag in CMake. Please refer to Chapter 1, Setting Up OpenCV, for installation instructions. Additionally, if you have not already installed Matplotlib, install it by running $ pip install matplotlib (or $ pip3 install matplotlib, depending on your environment).

The complete code for this chapter can be found in this book's GitHub repository, https://github.com/PacktPublishing/Learning-OpenCV-5-Computer-Vision-with-Python-Fourth-Edition, in the chapter06 folder. The sample images can be found in the images folder.

A subset of the chapter’s sample code can be edited and run interactively in Google Colab at https://colab...

The rest of the chapter is locked

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Authors (2)

Joseph Howse

Joseph Howse

Joseph Howse lives in a Canadian fishing village, where he chats with his cats, crafts his books, and nurtures an orchard of hardy fruit trees. He is President of Nummist Media Corporation, which exists to support his books and to provide mentoring and consulting services, with a specialty in computer vision. On average, in 2015-2022, Joseph has written 1.4 new books or new editions per year for Packt. He also writes fiction, including an upcoming novel about the lives of a group of young people in the last days of the Soviet Union.

See other products by Joseph Howse

Joe Minichino

Joe Minichino

Joe Minichino is an R&D labs engineer at Teamwork. He is a passionate programmer who is immensely curious about programming languages and technologies and constantly experimenting with them. Born and raised in Varese, Lombardy, Italy, and coming from a humanistic background in philosophy (at Milan's Università Statale), Joe has lived in Cork, Ireland, since 2004. There, he became a computer science graduate at the Cork Institute of Technology.

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