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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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Generating a CMake script file

Before we start creating our source file, we are going to generate the CMakeLists.txt file to allow us to compile our project, structure it, and execute it. The following CMake script is simple and basic but enough to compile and generate the executable:

cmake_minimum_required (VERSION 3.0)

PROJECT(Chapter4_Phototool)

set (CMAKE_CXX_STANDARD 11)

# Requires OpenCV
FIND_PACKAGE( OpenCV 4.0.0 REQUIRED )
MESSAGE("OpenCV version : ${OpenCV_VERSION}")

include_directories(${OpenCV_INCLUDE_DIRS})
link_directories(${OpenCV_LIB_DIR})

ADD_EXECUTABLE(${PROJECT_NAME} main.cpp)
TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${OpenCV_LIBS})

The first line indicates the minimum CMake version required to generate our project, the second one sets the project name that we can use as the ${PROJECT_NAME} variable, and the third one sets the required C++ version; in our case...

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