ubuntu安装opencv

1 安装OpenCV 3.3.1

tutorial_linux_install

1.1 安装依赖包

# [compiler] 
sudo apt-get install build-essential

# [required] 
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

# [optional] 
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

1.2 编译

cmake

cd ~/opencv
mkdir build
cd build


# configuring
cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local ..
# without cuda 用CUDA可能会出现错误，并且编译时间较长。如果不是特别需要，关掉CUDA。
cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_CUDA=OFF ..
# specify install directory
cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/home/zhangxin/tools/opencv-3.3.1/release -D WITH_CUDA=OFF ..

很多时候我们用不多个不同版本的OpenCV，所以最好指定安装目录，与其他版本OpenCV避免混淆。

build

make -j8

install

make install

2 测试代码

2.1 C++代码

#include 
#include "opencv2/core/version.hpp"

int main(int argc, char ** argv)
{
  std::cout << "OpenCV version: "
            << CV_MAJOR_VERSION << "." 
            << CV_MINOR_VERSION << "."
            << CV_SUBMINOR_VERSION
            << std::endl;
  return 0;
}

2.2 Makefile

CPP = g++

# OpenCV trunk
CPPFLAGS = -L/home/zhangxin/tools/opencv-3.3.1/release/libs \
	   -I/home/zhangxin/tools/opencv-3.3.1/release/include \
	   -Wl,-rpath=/home/zhangxin/tools/opencv-3.3.1/release/libs

# Opencv 2.4.8
#CPPFLAGS = -L/home/krystof/libs/opencv-2.4.8/release/installed/libs \
#            -I/home/krystof/libs/opencv-2.4.8/release/installed/include \
#	    -Wl,-rpath=/home/krystof/libs/opencv-2.4.8/release/installed/libs

all: test

# 注意Makefile里要用制表符
test: main.cpp
	$(CPP) $(CPPFLAGS) $^ -o $@

2.3 运行

make test
./test