Ubuntu 20.04.2 LTS 安装 opencv环境

学习GAME101课程，需要安装opencv环境，记录如下

安装cmake

sudo apt-get install cmake

安装依赖环境

sudo apt-get install build-essential libgtk2.0-dev libavcodec-dev libavformat-dev libjpeg-dev libswscale-dev libtiff5-dev
sudo apt-get install libgtk2.0-dev
sudo apt-get install pkg-config

下载安装opencv，也可先下载下来再安装https://opencv.org/releases/

# Install minimal prerequisites (Ubuntu 18.04 as reference)
sudo apt update && sudo apt install -y cmake g++ wget unzip
# Download and unpack sources
wget -O opencv.zip https://github.com/opencv/opencv/archive/master.zip
unzip opencv.zip
# Create build directory
mkdir -p build && cd build
# Configure
cmake  ../opencv-master
# Build
cmake --build .

编译完成后,安装

sudo make install

编译工程报错

OpenCV Error: Unspecified Error(The Function is not implemented)
Can't initialize GTK backend in function 'cvInitSystem'

这是安装opencv时，没有安装依赖，执行步骤 安装依赖环境再重新编译安装就好了

参考文章
opencv安装https://docs.opencv.org/master/d7/d9f/tutorial_linux_install.html
https://blog.csdn.net/public669/article/details/99050101