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Learn OpenCV 4 by Building Projects

Learn OpenCV 4 by Building Projects

By : Millán Escrivá, Vinícius G. Mendonça, Joshi
2.5 (2)
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Learn OpenCV 4 by Building Projects

Learn OpenCV 4 by Building Projects

2.5 (2)
By: Millán Escrivá, Vinícius G. Mendonça, Joshi

Overview of this book

OpenCV is one of the best open source libraries available, and can help you focus on constructing complete projects on image processing, motion detection, and image segmentation. Whether you’re completely new to computer vision, or have a basic understanding of its concepts, Learn OpenCV 4 by Building Projects – Second edition will be your guide to understanding OpenCV concepts and algorithms through real-world examples and projects. You’ll begin with the installation of OpenCV and the basics of image processing. Then, you’ll cover user interfaces and get deeper into image processing. As you progress through the book, you'll learn complex computer vision algorithms and explore machine learning and face detection. The book then guides you in creating optical flow video analysis and background subtraction in complex scenes. In the concluding chapters, you'll also learn about text segmentation and recognition and understand the basics of the new and improved deep learning module. By the end of this book, you'll be familiar with the basics of Open CV, such as matrix operations, filters, and histograms, and you'll have mastered commonly used computer vision techniques to build OpenCV projects from scratch.
Table of Contents (14 chapters)
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Basic CMake configuration file

To configure and check all the requisite dependencies for our project, we are going to use CMake, but it is not the only way that this can be done; we can configure our project in any other tool or IDE, such as Makefiles or Visual Studio, but CMake is a more portable way to configure multiplatform C++ projects.

CMake uses configuration files called CMakeLists.txt, where the compilation and dependencies process is defined. For a basic project based on an executable built from a single source code file, a CMakeLists.txt file comprising three lines is all that is required. The file looks as follows:

cmake_minimum_required (VERSION 3.0) 
project (CMakeTest) 
add_executable(${PROJECT_NAME} main.cpp) 

The first line defines the minimum version of CMake required. This line is mandatory in our CMakeLists.txt file and allows us to use the functionality of...

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