Opencv环境配置一览

OpenCV环境配置一览

专业相关，平时经常会使用到opencv的一些函数，目前主要包括Ubuntu系统，Android系统，本篇文章介绍在两个系统下对应的环境配置策略。

Ubuntu环境

附上一个很好用的脚本，一键安装

#####################################
# INSTALL OPENCV ON UBUNTU OR DEBIAN #
######################################

# -------------------------------------------------------------------- |
#                       SCRIPT OPTIONS                                 |
# ---------------------------------------------------------------------|
OPENCV_VERSION='4.5.4'       # Version to be installed
OPENCV_CONTRIB='YES'          # Install OpenCV's extra modules (YES/NO)
# -------------------------------------------------------------------- |

# |          THIS SCRIPT IS TESTED CORRECTLY ON          |
# |------------------------------------------------------|
# | OS               | OpenCV       | Test | Last test   |
# |------------------|--------------|------|-------------|
# | Ubuntu 20.04 LTS | OpenCV 4.5.4 | OK   | 9 Dec 2021  |
# | Ubuntu 16.04 LTS | OpenCV 4.5.4 | OK   | 9 Dec 2021  |
# |----------------------------------------------------- |
# |------------------|--------------|------|-------------|
# | Ubuntu 20.04 LTS | OpenCV 4.2.0 | OK   | 25 Apr 2020 |
# |----------------------------------------------------- |
# | Debian 10.2      | OpenCV 4.2.0 | OK   | 26 Dec 2019 |
# |----------------------------------------------------- |
# | Debian 10.1      | OpenCV 4.1.1 | OK   | 28 Sep 2019 |
# |----------------------------------------------------- |
# | Ubuntu 18.04 LTS | OpenCV 4.1.0 | OK   | 22 Jun 2019 |
# | Debian 9.9       | OpenCV 4.1.0 | OK   | 22 Jun 2019 |
# |----------------------------------------------------- |
# | Ubuntu 18.04 LTS | OpenCV 3.4.2 | OK   | 18 Jul 2018 |
# | Debian 9.5       | OpenCV 3.4.2 | OK   | 18 Jul 2018 |



# 1. KEEP UBUNTU OR DEBIAN UP TO DATE

sudo apt-get -y update
# sudo apt-get -y upgrade       # Uncomment to install new versions of packages currently installed
# sudo apt-get -y dist-upgrade  # Uncomment to handle changing dependencies with new vers. of pack.
# sudo apt-get -y autoremove    # Uncomment to remove packages that are now no longer needed


# 2. INSTALL THE DEPENDENCIES

# Build tools:
sudo apt-get install -y build-essential cmake

# GUI (if you want GTK, change 'qt5-default' to 'libgtkglext1-dev' and remove '-DWITH_QT=ON'):
sudo apt-get install -y qt5-default libvtk6-dev

# Media I/O:
sudo apt-get install -y zlib1g-dev libjpeg-dev libwebp-dev libpng-dev libtiff5-dev libjasper-dev \
                        libopenexr-dev libgdal-dev

# Video I/O:
sudo apt-get install -y libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev \
                        libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev yasm \
                        libopencore-amrnb-dev libopencore-amrwb-dev libv4l-dev libxine2-dev

# Parallelism and linear algebra libraries:
sudo apt-get install -y libtbb-dev libeigen3-dev

# Documentation and other:
sudo apt-get install -y doxygen unzip wget


# 3. INSTALL THE LIBRARY

wget https://github.com/opencv/opencv/archive/${OPENCV_VERSION}.zip
unzip ${OPENCV_VERSION}.zip && rm ${OPENCV_VERSION}.zip
mv opencv-${OPENCV_VERSION} OpenCV

if [ $OPENCV_CONTRIB = 'YES' ]; then
  wget https://github.com/opencv/opencv_contrib/archive/${OPENCV_VERSION}.zip
  unzip ${OPENCV_VERSION}.zip && rm ${OPENCV_VERSION}.zip
  mv opencv_contrib-${OPENCV_VERSION} opencv_contrib
  mv opencv_contrib OpenCV
fi

cd OpenCV && mkdir build && cd build

if [ $OPENCV_CONTRIB = 'NO' ]; then
cmake -DWITH_QT=ON -DWITH_OPENGL=ON -DFORCE_VTK=ON -DWITH_TBB=ON -DWITH_GDAL=ON \
      -DWITH_XINE=ON -DENABLE_PRECOMPILED_HEADERS=OFF ..
fi

if [ $OPENCV_CONTRIB = 'YES' ]; then
cmake -DWITH_QT=ON -DWITH_OPENGL=ON -DFORCE_VTK=ON -DWITH_TBB=ON -DWITH_GDAL=ON \
      -DWITH_XINE=ON -DENABLE_PRECOMPILED_HEADERS=OFF \
      -DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib/modules ..
fi

make -j16
sudo make install
sudo ldconfig

sudo ldconfig
# 4. EXECUTE SOME OPENCV EXAMPLES AND COMPILE A DEMONSTRATION

# To complete this step, please visit 'http://milq.github.io/install-opencv-ubuntu-debian'.

Android studio

1. 在opencv官网下载相对应的Android SDK

   

2. 解压缩之后，目录会有这样一个文件夹

3. 在android项目中引入sdk

引入之后，需要加载一会

4. 添加Dependency

添加opencv。

5. 非常重要，也是容易被疏忽的一步。在app创建时加载opencv。

   引用库添加：

   import org.opencv.android.OpenCVLoader
   

   MainActivity 添加：

   OpenCVLoader.initDebug();
   

​ 之后便可以在对应的文件中使用opencv了！

Unity

有时候使用Unity开发，可能会使用到OpenCV的一些功能，OpenCV for Unity存在一个安装包

可以把这个安装包导入的自己的项目里，然后需要修改几个文件，主要是为了解决命名冲突的问题。
会有几个文件报这个错：

在对应文件库引用部分添加：

using Range = OpenCVForUnity.CoreModule.Range;