Ubuntu 16.04 Python3.5.2 下安裝 OpenCV 3.4.1

1. 安裝工具和依賴項

首先升級系統(tǒng)包和軟件庫

sudo apt update
sudo apt upgrade

安裝一些工具

sudo apt install build-essential cmake pkg-config git wget

安裝numpy模塊

sudo apt install python3-pip
pip3 install numpy

安裝依賴項

sudo apt install libjpeg8-dev libtiff5-dev libjasper-dev libpng12-dev
sudo apt install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
sudo apt-get install --no-install-recommends libboost-all-dev
sudo apt install libxvidcore-dev libx264-dev
sudo apt install libgtk-3-dev
sudo apt install libatlas-base-dev gfortran
sudo apt install python3.5-dev

2 安裝OpenCV 3.4.3

下載解壓源碼包

wget https://github.com/opencv/opencv/archive/3.4.3.zip
unzip opencv-3.4.3.zip

用cmake配置屬性

cd opencv-3.4.3
mkdir -p build
cd build

開始配置

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D PYTHON3_EXECUTABLE=/usr/bin/python3 -D PYTHON_INCLUDE_DIR=/usr/include/python3.5 -D PYTHON_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.5m.so -D PYTHON3_NUMPY_INCLUDE_DIRS=/usr/local/lib/python3.5/dist-packages/numpy/core/include -D INSTALL_PYTHON_EXAMPLES=ON -D INSTALL_C_EXAMPLES=ON ../

該步成功艾船，之后輸入

make -j8
sudo make install

至此在python3下執(zhí)行

import cv2

不會報錯，則安裝成功

3 C++調用OpenCV接口

新建test.cpp

gedit test.cpp

#include <iostream>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;
int main() 
{
    Mat img = imread("test.jpg");  // 最好使用絕對路徑
    imshow("test",img); 
    waitKey(5000);
    return 0;
}

在控制臺下編譯，或者寫入Makefile

g++ test.cpp -o test `pkg-config opencv --libs`

使用如下代碼運行

./test

4 Qt Creator 調用OpenCV接口

新建控制臺工程test
在test.pro中加入

INCLUDEPATH += /usr/local/include \
                /usr/local/include/opencv \
                /usr/local/include/opencv2

LIBS += /usr/local/lib/libopencv_highgui.so \
        /usr/local/lib/libopencv_core.so \
        /usr/local/lib/libopencv_imgproc.so

使用的main.cpp代碼如下：

#include <QCoreApplication>
#include <iostream>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>

using namespace cv;
using namespace std;

int main(void)
{
    namedWindow( "test", WINDOW_AUTOSIZE );
    Mat img = imread("test.jpg", 1);    // 務必使用絕對路徑戚扳，否則可能報錯
    imshow("test", img);
    waitKey(5000);

    return 0;
}