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OpenCV 3.x with Python By Example - Second Edition

You're reading from OpenCV 3.x with Python By Example - Second Edition

Product type Book

Published in Jan 2018

Publisher Packt

ISBN-13 9781788396905

Pages 268 pages

Edition 2nd Edition

Languages

Concepts

Computer Vision

Authors (2):

Gabriel Garrido Calvo

Prateek Joshi

View More author details

Table of Contents (17) Chapters

Title Page

Copyright and Credits

Contributors

Packt Upsell

Preface

1. Applying Geometric Transformations to Images

2. Detecting Edges and Applying Image Filters

3. Cartoonizing an Image

4. Detecting and Tracking Different Body Parts

5. Extracting Features from an Image

6. Seam Carving

7. Detecting Shapes and Segmenting an Image

8. Object Tracking

9. Object Recognition

10. Augmented Reality

11. Machine Learning by an Artificial Neural Network

1. Other Books You May Enjoy

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Geometric transformations for augmented reality

The result of augmented reality is amazing, but there are a lot of mathematical things going on underneath. Augmented reality utilizes a lot of geometric transformations and associated mathematical functions to make sure everything looks smooth. When talking about a live video for augmented reality, we need to precisely register the virtual objects on top of the real world. To understand this better, let's think of it as an alignment of two cameras: the real one through which we see the world, and the virtual one that projects the computer-generated graphical objects.

In order to build an augmented reality system, the following geometric transformations need to be established:

Object-to-scene: This transformation refers to transforming the 3D coordinates of a virtual object and expressing them in the coordinate frame of our real-world scene. This ensures that we are placing the virtual object in the right location.
Scene-to-camera: This transformation...

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Authors (2)

Gabriel Garrido Calvo

Gabriel Garrido is a multifaceted and versatile software engineer with more than 7 years of experience in developing web applications for companies such as Telefonica, Trivago, and Base7Booking. He has a degree in computer science from the University of Granada, Spain. He is passionate about coding, focusing on its quality and spending hours working on personal projects based on technologies such as computer vision, artificial intelligence, and augmented reality. Taking part in hackathons is one of his hobbies. He has won a couple of prizes for implementing beta software for a Google Cardboard hackathon and another for a travel assistant at a TNOOZ hackathon.

See other products by Gabriel Garrido Calvo

Prateek Joshi

Prateek Joshi is the founder of Plutoshift and a published author of 9 books on Artificial Intelligence. He has been featured on Forbes 30 Under 30, NBC, Bloomberg, CNBC, TechCrunch, and The Business Journals. He has been an invited speaker at conferences such as TEDx, Global Big Data Conference, Machine Learning Developers Conference, and Silicon Valley Deep Learning. Apart from Artificial Intelligence, some of the topics that excite him are number theory, cryptography, and quantum computing. His greater goal is to make Artificial Intelligence accessible to everyone so that it can impact billions of people around the world.

See other products by Prateek Joshi

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