## OpenCV 项目



### 如何编译该项目
**必须安装的环境**
1. 配置 `JAVA_HOME`
2. 安装 opencv

```shell
git clone https://git.yishihui.com/VideoProcessing/PQCVMedia.git

cd PQCVMedia

./build.sh

echo "安装成功，在当前 output/lib 下"

```

#### Linux：

**配置 JAVA_HOME 环境变量**
```shell
export JAVA_HOME=xxx
```

**命令安装 必须 4.5.5 版本**
```shell
sudo yum install opencv opencv-devel

#检查版本
pkg-config --modversion opencv
```

**源码安装 4.5.5**
```shell
#opencv 环境 4.5.5
#安装依赖包
sudo yum install freeglut-devel mesa-libGL mesa-libGL-devel  boost boost-thread boost-devel libv4l-devel libjpeg-turbo-devel libtiff-devel  libdc1394-devel tbb-devel eigen3-devel gstreamer-plugins-base-devel python-devel numpy python34-numpy gtk2-devel libpng-devel jasper-devel openexr-devel libwebp-devel python3 python3-devel python3-pip  python3-devel python3-numpy
#下载 OpenCV 源码 

wget -O opencv-4.5.5.zip         https://github.com/opencv/opencv/archive/refs/tags/4.5.5.zip
wget -O opencv_contrib-4.5.5.zip https://github.com/opencv/opencv_contrib/archive/refs/tags/4.5.5.zip
unzip opencv-4.5.5.zip
unzip opencv_contrib-4.5.5.zip

cd opencv-4.5.5
mkdir build && cd build

OPENCV_CONTRIB_DIR=/root/opencv/opencv_contrib-4.5.5/modules

cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/usr/local \
    -D INSTALL_C_EXAMPLES=ON \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D OPENCV_GENERATE_PKGCONFIG=ON \
    -D OPENCV_EXTRA_MODULES_PATH="${OPENCV_CONTRIB_DIR}" \
    -D BUILD_EXAMPLES=ON ..

#使用 8cpu 编译并安装    
make -j8 && make install    
 

```

#### MAC：
**命令安装**
```shell
brew install opencv
```
如果安装慢可以换一个源:
```shell
cd "$(brew --repo)"  
git remote set-url origin https://mirrors.aliyun.com/homebrew/brew.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://mirrors.aliyun.com/homebrew/homebrew-core.git
echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.aliyun.com/homebrew/homebrew-bottles' >> ~/.bash_profile
source ~/.bash_profile
```

### 如何使用?
#### java

**将 jar copy 至你的项目**
```shell
 cp PQCVMedia/output/jar/libpq-cv-media.jar 你的目录
```

**1、初始化 SDK**
```java
PQCVMediaProcessor.initSDK("/root/libpiaoquan_java_opencv.so");
```

**2、以 bytes 流形式传递**
```java
PQCVMediaProcessor.blurDetectionFromImageBytes(byte[] data)

```


**2、以 path 流形式传递**
```java
PQCVMediaProcessor.blurDetectionFromImagePath(String path);

```