Book Image

OpenCV By Example

By : Prateek Joshi, David Millán Escrivá, Vinícius G. Mendonça
Book Image

OpenCV By Example

By: Prateek Joshi, David Millán Escrivá, Vinícius G. Mendonça

Overview of this book

Open CV is a cross-platform, free-for-use library that is primarily used for real-time Computer Vision and image processing. It is considered to be one of the best open source libraries that helps developers focus on constructing complete projects on image processing, motion detection, and image segmentation. Whether you are completely new to the concept of Computer Vision or have a basic understanding of it, this book will be your guide to understanding the basic OpenCV concepts and algorithms through amazing real-world examples and projects. Starting from the installation of OpenCV on your system and understanding the basics of image processing, we swiftly move on to creating optical flow video analysis or text recognition in complex scenes, and will take you through the commonly used Computer Vision techniques to build your own Open CV projects from scratch. By the end of this book, you will be familiar with the basics of Open CV such as matrix operations, filters, and histograms, as well as more advanced concepts such as segmentation, machine learning, complex video analysis, and text recognition.
Table of Contents (18 chapters)
OpenCV By Example
About the Authors
About the Reviewers

Basic CMake configuration files

To configure and check all the required dependencies of our project, we are going to use CMake; but it is not mandatory, so we can configure our project in any other tool or IDE such as Makefiles or Visual Studio. However, CMake is the most portable way to configure multiplatform C++ projects.

CMake uses configuration files called CMakeLists.txt, where the compilation and dependency processes are defined. For a basic project, based on an executable build from one source code file, a two-line CMakeLists.txt file is all that is needed. The file looks like this:

cmake_minimum_required (VERSION 2.6)
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 you to use the cmake functionality defined from a given version defined in the second line; it defines the project name. This name is saved in a variable called PROJECT_NAME.

The last line...