OpenCV在ubuntu下的編譯

opencv的編譯

下面咱們寫一個shell命名爲build.sh放在opencv的根目錄下面，代碼以下：

mkdir $1
cd $1
cmake -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

其餘編譯參數請參考博客

在Windows下的編譯能夠直接使用CMake GUI進行設置配置
如圖

選擇本身須要的類型的配置參數(如編譯器類型，編譯參數)

接下來咱們運行一下
sh ./build.sh build

便可在bin目錄下找到生成的opencv build

java版本的安裝

1.Ant的安裝(非Java可略過此處)

生成opencv的Java包一直是一個會困擾Java黨萌新的問題
按照官方給出的安裝教程並不會生成OpenCV的jar包
首先咱們要安裝ant
輸入指令sudo apt-get install ant
在windows下ant 在安裝ant須要去下載 apache 的ant包並設置好系統環境變量ANT_HOME爲相似 D:\apache-ant-1.10.1安裝目錄

注:要安裝oracle jdk否則有時候會出玄學問題

在上面c++安裝編譯的時候參數-DBUILD_opencv_java=ON 就已經幫咱們生成了jar的包在bin目錄下
注：opencv生成的包分爲靜態包和動態包，推薦生成靜態包，靜態調用會省去許多沒必要要或者是不知道的動態連接庫的加載。 接下來咱們把包導入到idea中。 下面給出一個基於Config的opencv啓動器
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<String,String> info) throws IOException {
        Properties pps = new Properties();
        Iterator<String> 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<String,String> getUserConfig(){
        Properties pps = new Properties();
        Map<String,String> info=new HashMap<String,String>();
        try {
            pps.load(user_in);
            Iterator<String> 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<Integer,String> camera){
        Iterator<Integer> 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);//加載opencv庫
        mainConfig Config=new mainConfig();
        Map<String,String> info=Config.getUserConfig();
        Iterator<String> it=info.keySet().iterator();
        while (it.hasNext()){
            String key =it.next();
        }
        VideoCapture cae=new VideoCapture();
        for(int i=0;i<Integer.parseInt(info.get("max_camera"));i+=1){
            Map<Integer,String> cap=new HashMap<Integer,String>();
            if (cae.open(i)){
                cap.put(i,"Camera"+i);
                video_start(cap);
            }else {
                break;
            }
        }
    }
}

注：若是不存在引用關係的話，每一次都要加載opencv庫