添加opencv Android 编译

2022-01-22 16:24:04 +08:00 · 2022-01-22 16:24:04 +08:00 · ed504d0edb
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 ![image-20211009155336059](https://yewuyadeimagewall.oss-cn-hangzhou.aliyuncs.com/image-20211009155336059.png)

+## 获取避障信息
+
+![image-20211102160558403](https://yewuyadeimagewall.oss-cn-hangzhou.aliyuncs.com/image-20211102160558403.png)
+
--- a/android版本.md
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+# 手动编译OpenCV 和OpenCV_contrib android版本
+## 安装编译工具
+### 基础工具安装
+```sh
+sudo apt install build-essential python wget git python-pip
+pip install ninja
+sudo apt install ant libcurl4-gnutls-dev zlib1g-dev
+```
+### cmake 安装
+```sh
+wget --no-check-certificate https://github.com/Kitware/CMake/releases/download/v3.22.1/cmake-3.22.1.tar.gz
+tar -zxvf cmake-3.22.1.tar.gz
+cd cmake-3.22.1
+./bootstrap --system-curl
+make -j8   # 8为CPU核心数
+sudo make install
+cmake --version  #查看是否正常安装cmake
+
+```
+
+### [Ccache ](https://ccache.dev/)安装
+
+```sh
+wget --no-check-certificate https://github.com/ccache/ccache/releases/download/v3.7.12/ccache-3.7.12.tar.gz
+tar -zxvf ccache-3.7.12.tar.gz
+cd ccache-3.7.12
+./configure
+make -j8 # 8为CPU核心数
+sudo make install
+```
+
+### Android sdk ndk Java jdk安装 
+* 下载SDK    wget http://dl.google.com/android/android-sdk_r24.4.1-linux.tgz
+*  [NDK](https://github.com/android/ndk/wiki/Unsupported-Downloads) [JDK](https://www.oracle.com/java/technologies/downloads/)文件并解压文件,修改.bashrc文件，添加如下内容
+
+```sh
+export ANDROID_SDK=/home/ehigh/android_sdk   #sdk路径
+export PATH=$ANDROID_SDK/tools:$PATH
+export ANDROID_NDK=/home/ehigh/android_ndk   #ndk路径
+export PATH=${PATH}:$ANDROID_NDK
+export JAVA_HOME=/home/ehigh/java8        # jdk路径
+export JRE_HOME=${JAVA_HOME}/jre
+export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
+export PATH=${JAVA_HOME}/bin:$PATH
+# 保存后执行 source .bashrc 使修改生效
+android -h # 验证Android sdk 版本
+```
+
+* 安装需要的组件版本
+
+```sh
+android update sdk -u --all --filter  29,62
+```
+
+## opencv 代码下载&& 配置
+* 代码下载
+```sh
+mkdir android_opencv
+cd android_opencv
+git clone https://github.com/opencv/opencv_contrib.git
+git clone https://github.com/opencv/opencv.git
+```
+* NDK配置修改
+修改文件 /opencv/platforms/android/ndk-22.config.py ,修改GRADLE版本为Android项目的版本
+```sh
+ABIs = [
+    ABI("1", "arm64-v8a",   None, cmake_vars=dict(ANDROID_GRADLE_PLUGIN_VERSION='4.2.0', GRADLE_VERSION='6.7.1', KOTLIN_PLUGIN_VERSION='1.5.0')),
+]
+```
+
+* 编译配置修改
+
+  修改文件/opencv/platforms/android/build_sdk.py,修改cmake_var 为如下内容
+
+  ```python
+      def build_library(self, abi, do_install):
+          cmd = [self.cmake_path, "-GNinja"]
+          cmake_vars = dict(
+              CMAKE_TOOLCHAIN_FILE=self.get_toolchain_file(),
+              INSTALL_CREATE_DISTRIB="ON",
+              WITH_OPENCL="OFF",
+              BUILD_KOTLIN_EXTENSIONS="ON",
+              WITH_IPP=("ON" if abi.haveIPP() else "OFF"),
+              WITH_TBB="ON",
+              OPENCV_ENABLE_NONFREE="ON",  # 添加这一行,添加编译opencv_contrib
+              BUILD_EXAMPLES="OFF",
+              BUILD_TESTS="OFF",
+              BUILD_PERF_TESTS="OFF",
+              BUILD_DOCS="OFF",
+              BUILD_ANDROID_EXAMPLES="ON",
+              INSTALL_ANDROID_EXAMPLES="OFF",
+          )
+  ```
+## 编译代码
+
+```sh
+cd android_opencv
+mkdir opencv_build
+cd opencv_build
+python ../opencv/platforms/android/build_sdk.py  --extra_modules_path=../opencv_contrib/modules/  --config /home/yewuya/opencv/platforms/android/ndk-22.config.py       # ndk-17要与下载的ndk版本对应
+```
+* 编译完成后opencv_build 文件夹下的OpenCV-android-sdk 即为编译出来的结果
+
+## Android 项目导入opencv sdk
+
+
+
+
+