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macOS下使用CLion配置OpenCV环境

Mac 迷途小书童 0评论

环境

  • macOS 11.6.5
  • CLion 2022.1
  • OpenCV 4.5

视频看这里

Youtube

Bilibili

安装brew

HomebrewmacOS 上的一个包管理器,类似于 ubuntu 系统中的 apt-get,通过它可以很方便的安装软件,官方网址是 https://brew.sh

首先,终端中输入 xcode-select --install,通过它来安装 CLT for Xcode

然后,使用官方的脚本进行安装,在终端中执行命令

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

如果出现在终端中无法解析域名的错误,可以直接在浏览器中打开 https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh,将文件内容拷贝下来,存储在脚本文件中,然后执行它

改用国内的清华源

# 可以将环境变量写入~/.bash_profile文件中
export HOMEBREW_CORE_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git"
brew tap --custom-remote --force-auto-update homebrew/core https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git
brew tap --custom-remote --force-auto-update homebrew/cask https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask.git
brew tap --custom-remote --force-auto-update homebrew/cask-fonts https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask-fonts.git
brew tap --custom-remote --force-auto-update homebrew/cask-drivers https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask-drivers.git
brew tap --custom-remote --force-auto-update homebrew/cask-versions https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-cask-versions.git
brew tap --custom-remote --force-auto-update homebrew/command-not-found https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-command-not-found.git
brew update

安装opencv

使用 homebrew 来安装 opencv

brew install opencv

默认安装的是最新的版本,如果想要安装 opencv3,可以这样

brew install opencv@3

如果是更古老的 opencv2 版本

brew install opencv@2

如果在安装过程出现类似下面的错误提示

==> Searching for similarly named formulae... 
Error: No similarly named formula found. 
Error: No available formula or cask with the name "opencv". 
==> Searching for a previously deleted formula (in the last month)... 
Error: No previously deleted formula found. 
==> Searching taps on GitHub... 
Error: No formula found in taps.

Error:No available formula with the name "opencv"

是因为之前的 homebrew-core 代码下载出现了问题,解决方法是

rm -rf /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core
brew update

这里再列举一些常见的 brew 命令

# 卸载
brew uninstall opencv

# 查找软件包
brew search opencv

# 更新版本
brew upgrade opencv

# 更新homebrew
brew update

# 查看安装列表
brew list

验证安装

这里使用 CLion 集成开发环境来验证,新建一个项目

编译器这里都选择默认

项目创建后,修改 CMakeLists.txt 文件

cmake_minimum_required(VERSION 3.22)
project(HelloOpenCV)

set(CMAKE_CXX_STANDARD 11)

find_package(OpenCV)

include_directories(${OpenCV_INCLUDE_DIRS})

add_executable(HelloOpenCV main.cpp)

target_link_libraries(HelloOpenCV ${OpenCV_LIBS})

然后,修改源码文件 main.cpp,以显示一张图片为例

#include <iostream>
#include <opencv2/opencv.hpp>

using namespace std;
using namespace cv;

int main() {
    Mat srcImage = imread("Lenna.png");
    if (!srcImage.data) {
        std::cout << "Image not loaded";
        return -1;
    }
    imshow("image", srcImage);
    waitKey(0);
    return 0;
}

最后,将测试图片拷贝到目录 cmake-build-debug,再运行项目

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