# gocv-demo

**Repository Path**: finsiot-dev/gocv-demo

## Basic Information

- **Project Name**: gocv-demo
- **Description**: gocv-demo
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-05-30
- **Last Updated**: 2025-05-30

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# ubuntu 20.04安装 opencv

安装依赖
```shell
sudo apt update
sudo apt upgrade -y
sudo apt install -y build-essential cmake git pkg-config libgtk-3-dev \
    libavcodec-dev libavformat-dev libswscale-dev libv4l-dev \
    libxvidcore-dev libx264-dev libjpeg-dev libpng-dev libtiff-dev \
    gfortran openexr libatlas-base-dev python3-dev python3-pip python3-numpy \
    libtbb2 libtbb-dev libdc1394-22-dev libopenexr-dev \
    libgstreamer-plugins-base1.0-dev libgstreamer1.0-dev \
    liblapack-dev liblapacke-dev libhdf5-dev
```

OpenCV 4.11.0 源码下载
```shell
git clone https://github.com/opencv/opencv.git
cd opencv
git checkout 4.x.0  # 切换到 4.x.0 版本
```shell

（可选）安装额外模块（opencv_contrib）
```shell
git clone https://github.com/opencv/opencv_contrib.git
cd opencv_contrib
git checkout 4.x.0  # 与主仓库版本一致
cd ../opencv
```

编译 OpenCV
```shell
cmake -D CMAKE_BUILD_TYPE=RELEASE \
      -D CMAKE_INSTALL_PREFIX=/usr/local \
      -D OPENCV_GENERATE_PKGCONFIG=ON \
      -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
      -D WITH_TBB=ON \
      -D WITH_OPENMP=ON \
      -D WITH_FFMPEG=ON \
      -D WITH_CUDA=OFF \
      -D BUILD_opencv_python3=ON \
      -D BUILD_EXAMPLES=OFF \
      -D BUILD_TESTS=OFF \
      -D BUILD_PERF_TESTS=OFF \
      -D PYTHON3_EXECUTABLE=$(which python3) \
      -D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
      -D PYTHON3_LIBRARY=$(python3 -c "from distutils.sysconfig import get_config_var; import os; print(os.path.join(get_config_var('LIBDIR'), get_config_var('LDLIBRARY')))") \
      -D PYTHON3_NUMPY_INCLUDE_DIRS=$(python3 -c "import numpy; print(numpy.get_include())") ..
```

开始编译
```shell

make -j$(nproc)  # 使用所有 CPU 核心加速编译
sudo make install
sudo ldconfig  # 更新动态链接库
```

检查 C++ 版本
```shell
pkg-config --modversion opencv4

```

检查 Python 绑定
```shell
python3 -c "import cv2; print(cv2.__version__)"
```
检查 golang绑定
```shell
go get -u gocv.io/x/gocv
```

卸载旧版本
```shell
sudo apt purge libopencv* python3-opencv
sudo apt autoremove
```