opencv的编译

下面我们写一个shell命名为build.sh放在opencv的根目录下面，代码如下：

mkdir $1cd $1cmake -DWITH_QT=ON -DWITH_OPENGL=ON -DFORCE_VTK=ON -DWITH_TBB=ON -DWITH_GDAL=ON -DWITH_XINE=ON -DBUILD_EXAMPLES=ON -DBUILD_opencv_java=ON BUILD_opencv_test_java=OFF ..make -j8

其他编译参数请

在Windows下的编译可以直接使用CMake GUI进行设置配置

如图

选择自己需要的类型的配置参数(如编译器类型，编译参数)

接下来我们运行一下

sh ./build.sh build

即可在bin目录下找到生成的opencv build

java版本的安装

1.Ant的安装(非Java可略过此处)

生成opencv的Java包一直是一个会困扰Java党萌新的问题

按照官方给出的安装教程并不会生成OpenCV的jar包 首先我们要安装ant 输入指令sudo apt-get install ant 在windows下ant 在安装ant需要去apache 的ant包并设置好系统环境变量ANT_HOME为类似D:\apache-ant-1.10.1安装目录

注:要安装oracle jdk不然有时候会出玄学问题

在上面c++安装编译的时候参数-DBUILD_opencv_java=ON就已经帮我们生成了jar的包在bin目录下

注：opencv生成的包分为静态包和动态包，推荐生成静态包，静态调用会省去许多不必要或者是不知道的动态链接库的加载。 接下来我们把包导入到idea中。 下面给出一个基于Config的opencv启动器 project/src/org/uestc/config

package org.uestc.config;import java.io.*;import java.util.*;public class mainConfig{    BufferedInputStream user_in=null;    BufferedInputStream sys_in=null;    FileOutputStream user_file=null;    FileOutputStream sys_file=null;    private String sysPath="./config/sys.properties";    private String userPath="./config/config.properties";    public mainConfig(){        try {            try {                user_in = new BufferedInputStream(new FileInputStream(this.userPath));                sys_in = new BufferedInputStream(new FileInputStream(sysPath));            } catch (IOException e) {                try {                    user_file = new FileOutputStream(userPath, true);                    sys_file = new FileOutputStream(sysPath, true);                    user_in = new BufferedInputStream(new FileInputStream(userPath));                    sys_in = new BufferedInputStream(new FileInputStream(sysPath));                    user_file.close();                    sys_file.close();                } catch (FileNotFoundException e1) {                    e1.printStackTrace();                }                System.out.println("No Config file , System will auto Created");            }        }catch (Exception e){            System.out.println("I/O Error");        }    }    private void setDefaultConfig(Map
    
      info) throws IOException {        Properties pps = new Properties();        Iterator
     
       it=info.keySet().iterator();        while (it.hasNext()){            String key=it.next();            pps.setProperty(key,info.get(key));        }        pps.store(user_file, "The New properties user_file");    }    public  Map
      
        getUserConfig(){        Properties pps = new Properties();        Map
       
         info=new HashMap
        
         ();        try {            pps.load(user_in);            Iterator
         
           it=pps.stringPropertyNames().iterator(); while(it.hasNext()){ String key=it.next(); info.put(key,pps.getProperty(key)); } return info; } catch (IOException e1) { e1.printStackTrace(); } return info; }}
         
        
       
      
     
    

配置文件

project/config/config.properties

max_camera=100

入口文件

/** * Created by Summer-V on 17-4-12. */import org.opencv.videoio.VideoCapture;import org.opencv.core.*;import java.util.HashMap;import java.util.Iterator;import java.util.Map;public class Main {    public void video_start(Map
    
      camera){        Iterator
     
       cap=camera.keySet().iterator();        while (cap.hasNext()){            int index=cap.next();            new Thread(new Runnable() {                @Override                public void run() {            videoViewer video=new videoViewer();            video.openWindow(index,camera.get(index),100);                }            }).start();        }    public static void main(String[] args){        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);//加载opencv库        mainConfig Config=new mainConfig();        Map
      
        info=Config.getUserConfig();        Iterator
       
         it=info.keySet().iterator();        while (it.hasNext()){            String key =it.next();        }        VideoCapture cae=new VideoCapture();        for(int i=0;i
        
          cap=new HashMap
         
          (); if (cae.open(i)){ cap.put(i,"Camera"+i); video_start(cap); }else { break; } } }}
         
        
       
      
     
    

注：如果不存在引用关系的话，每一次都要加载opencv库