Visual Studio 控制台应用程序同时使用OpenCV和matlab mat文件操作

matalb具有灵活的图像处理，代码编写起来简洁而高效。而OpenCV具有很多成熟的计算机视觉算法，能够处理很多实时的识别处理等问题，而且代码运行起来效率很高。所以如何结合两者之间的优点，是让很多学术人员、及工程开发者趋之若鹜的事情。本例子，就是为了测试将opencv处理的结果存储入matlab能够处理的.mat文件，方便matalb能后期对数据进行更为灵活的操作而进行的。例子比较简单，但是本人也花费了大量时间测试成功。

测试程序下载地址为：Visual Studio 中同时使用OpenCV和matlab mat文件操作 2016-1-24（早上）（需要你进入下载目录后自己找到这个文件夹）

另外一种将openCV和matlab结合起来的方式是使用cmex方式，用的是mexFunction，然后用matlab编译器mex name.cpp方式编译然后以函数形式调用。这方面的内容请参考本人博客中的另外三篇文章matlab调用opencv函数的配置，[转] Matlab与C++混合编程，添加OpenCV库，[转] Matlab与C++混合编程（依赖OpenCV）。

。

1. 平台

Visual Studio 2012,

Matlab2015a,

OpenCV 2.4.10

2. 项目配置

（1）如下图所示，配置为活动X64, 也就是64位下的debug模式，这样就可以出问题时能调试。

包含目录

E:\Program Files\MATLAB\R2015a\extern\include

E:\Program Files\MATLAB\R2015a\extern\include\win64

D:\Program Files\opencv\build\include

D:\Program Files\opencv\build\include\opencv

D:\Program Files\opencv\build\include\opencv2

库目录

E:\Program Files\MATLAB\R2015a\extern\lib\win64\microsoft

D:\Program Files\opencv\build\x64\vc11\lib

备注，请事先配置好64位openCV的环境变量，如将D:\Program Files\opencv\build\x64\vc11\bin加入系统环境变量。否则编译通过，但是运行时提示出错。

（3）链接器--输入中的设置

libmx.lib
libmat.lib
libmex.lib
opencv_calib3d2410d.lib
opencv_contrib2410d.lib
opencv_core2410d.lib
opencv_features2d2410d.lib
opencv_flann2410d.lib
opencv_gpu2410d.lib
opencv_highgui2410d.lib
opencv_imgproc2410d.lib
opencv_legacy2410d.lib
opencv_ml2410d.lib
opencv_objdetect2410d.lib
opencv_ts2410d.lib
opencv_video2410d.lib

3. 代码的编写

#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <math.h>
#include "highgui.h"
#include "cv.h"
#include "drawai.h"

// mex
#include "mat.h"
#include <string.h> /* For strcmp() */
#include <stdlib.h> /* For EXIT_FAILURE, EXIT_SUCCESS */
#define BUFSIZE 256


typedef  unsigned char byte;

using namespace std;
using namespace cv;



Mat ChangeImg(Mat &img, const uchar* table);
Mat& ScanImageAndReduceIterator(Mat& I, const uchar* const table);


void main()
{

    // Example 2
    // 内存方面的测试
    //int * mem_int;
    //int b;
    //mem_int=(int*)calloc(10*10,sizeof(*mem_int));
    //memset(mem_int,0,10*10*sizeof(int));

    //printf("%d %d\nHellow c test\nWelcome back!\n",mem_int[0],mem_int[10]);
    //scanf("%d",&b);
    //printf("you inputed the number %d\n",b);


    ///*Sample2 OpenCV进行灰度操作与绘图*/

    //const char *picName="Jellyfish.jpg";
    //Mat img=imread(picName,CV_LOAD_IMAGE_GRAYSCALE);
    //uchar table[256];//映射表，规定了变换前后灰度值的对应关
    //for (int i=0;i<256;i++)
    //    table[i]=i/100*100;//这里利用了C++的语言特性i/100只会留下整数部分
    //imshow("变换前",img);
    //Mat img_th=ChangeImg(img,table);
    //namedWindow("变换后", CV_WINDOW_AUTOSIZE); 
    //imshow("变换后",img_th);


    //// Example 2
    ///* Draw lines */
    ////圆心  
    //Point center = Point(255,255);  
    ////半径  
    //int r = 100;  
    ////承载图像  
    //Mat draw_board(500,500,CV_8UC3,Scalar(255,255,255));  
    ////参数为：承载的图像、圆心、半径、颜色、粗细、线型  
    //circle(draw_board,center,r,Scalar(0,0,0));
    //line(draw_board,Point(100,50),Point(200,100),Scalar(100,0,255),2,8,0);
    //line(draw_board,Point(100,70),Point(200,120),Scalar(100,0,255),10,8,0);
    //line(draw_board,Point(100,90),Point(200,140),Scalar(100,0,255),5,8,0);
    //line(draw_board,Point(100,90),Point(200,140),Scalar(100,0,0),1,8,0);
    //rectangle(draw_board,Point(300,200),Point(400,260),Scalar(100,80,0));
    ///* Draw picture */
    //string words="Merry chrismas, good luck!";
    //putText(draw_board,words,Point(100,400),CV_FONT_HERSHEY_COMPLEX,0.5,Scalar(100,200,0));
    //
    //imshow("底板",draw_board);  
    //cvMoveWindow("底板",300,500);


    //cvWaitKey(0);


    // Example 3
    /* byte dst;
    float src;
    dst=10;

    src=1.56;
    dst=(byte)src;
    char str[50];

    sprintf(str,"This is sprintf test %d",dst);
    printf("The result is: %d\n",dst);
    printf("\n Out is %s\n",str);*/


    // Example 4
    drawai::drawExample1();


    // Example 5
    /*printf("\n\nDouble Size %d, \nDouble Pointer size %d,\nDouble Pointer Pointer size %d\n",
    sizeof(double),sizeof(double*),sizeof(double**));
    printf("\n\nunsigned long Size %d, \nunsigned int size %d\n",
    sizeof(unsigned long),sizeof(unsigned int));

    int b=0,a=0;
    b=a=5;
    printf("\nb=a=5, result is b=%d. a=%d\n",b,a);*/


    // Example 6

    MATFile *pmat;
    mxArray *pa1, *pa2, *pa3;
    double data[9] = { 1.0, 4.0, 7.0, 2.0, 5.0, 8.0, 3.0, 6.0, 9.0 };
    const char *file = "mattest.mat";
    char str[BUFSIZE];
    int status; 

    printf("Creating file %s...\n\n", file);
    pmat = matOpen(file, "w");
    if (pmat == NULL) {
        printf("Error creating file %s\n", file);
        printf("(Do you have write permission in this directory?)\n");
        return;
    }

    /* pa1 */
    pa1 = mxCreateDoubleMatrix(3,3,mxREAL);
    if (pa1 == NULL) {
        printf("%s : Out of memory on line %d\n", __FILE__, __LINE__); 
        printf("Unable to create mxArray.\n");
        return;
    }
    status = matPutVariable(pmat, "LocalDouble", pa1);
    if (status != 0) {
        printf("%s :  Error using matPutVariable on line %d\n", __FILE__, __LINE__);
        return;
    }  

    /* pa2 */
    pa2 = mxCreateDoubleMatrix(3,3,mxREAL);
    if (pa2 == NULL) {
        printf("%s : Out of memory on line %d\n", __FILE__, __LINE__);
        printf("Unable to create mxArray.\n");
        return;
    }
    memcpy((void *)(mxGetPr(pa2)), (void *)data, sizeof(data));
    status = matPutVariableAsGlobal(pmat, "GlobalDouble", pa2);
    if (status != 0) {
        printf("Error using matPutVariableAsGlobal\n");
        return;
    } 

    /* pa3 */
    pa3 = mxCreateString("MATLAB: the language of technical computing");
    if (pa3 == NULL) {
        printf("%s :  Out of memory on line %d\n", __FILE__, __LINE__);
        printf("Unable to create string mxArray.\n");
        return;
    }
    status = matPutVariable(pmat, "LocalString", pa3);
    if (status != 0) {
        printf("%s :  Error using matPutVariable on line %d\n", __FILE__, __LINE__);
        return;
    } 

    /*
    * Ooops! we need to copy data before writing the array.  (Well,
    * ok, this was really intentional.) This demonstrates that
    * matPutVariable will overwrite an existing array in a MAT-file.
    */
    memcpy((void *)(mxGetPr(pa1)), (void *)data, sizeof(data));
    status = matPutVariable(pmat, "LocalDouble", pa1);
    if (status != 0) {
        printf("%s :  Error using matPutVariable on line %d\n", __FILE__, __LINE__);
        return;
    } 

    /* clean up */
    mxDestroyArray(pa1);
    mxDestroyArray(pa2);
    mxDestroyArray(pa3);

    if (matClose(pmat) != 0) {
        printf("Error closing file %s\n",file);
        return;
    }

    /*
    * Re-open file and verify its contents with matGetVariable
    */
    pmat = matOpen(file, "r");
    if (pmat == NULL) {
        printf("Error reopening file %s\n", file);
        return;
    }

    /*
    * Read in each array we just wrote
    */
    pa1 = matGetVariable(pmat, "LocalDouble");
    if (pa1 == NULL) {
        printf("Error reading existing matrix LocalDouble\n");
        return;
    }
    if (mxGetNumberOfDimensions(pa1) != 2) {
        printf("Error saving matrix: result does not have two dimensions\n");
        return;
    }

    pa2 = matGetVariable(pmat, "GlobalDouble");
    if (pa2 == NULL) {
        printf("Error reading existing matrix GlobalDouble\n");
        return;
    }
    if (!(mxIsFromGlobalWS(pa2))) {
        printf("Error saving global matrix: result is not global\n");
        return;
    }

    pa3 = matGetVariable(pmat, "LocalString");
    if (pa3 == NULL) {
        printf("Error reading existing matrix LocalString\n");
        return;
    }

    status = mxGetString(pa3, str, sizeof(str));
    if(status != 0) {
        printf("Not enough space. String is truncated.");
        return;
    }
    if (strcmp(str, "MATLAB: the language of technical computing")) {
        printf("Error saving string: result has incorrect contents\n");
        return;
    }

    /* clean up before exit */
    mxDestroyArray(pa1);
    mxDestroyArray(pa2);
    mxDestroyArray(pa3);

    if (matClose(pmat) != 0) {
        printf("Error closing file %s\n",file);
        return;
    }
    printf("Done\n");
    return;


}

这是以一个绘图的程序OpenCV、在控制台应用程序下生成.mat文件（可以作为matlab后续处理的数据输入）为例进行的测试。

运行的结果，会在项目根目录下生成下面的mattest.mat文件

posted @ 2016-01-24 10:41 wenglabs 阅读(962) 评论(0) 编辑收藏举报

刷新页面返回顶部

WENG'S LABS

Growing up with the help of the world's genius!

Visual Studio 控制台应用程序同时使用OpenCV和matlab mat文件操作

1. 平台

2. 项目配置

3. 代码的编写

公告

WENG'S LABS

Growing up with the help of the world's genius!

Visual Studio 控制台应用程序 同时使用OpenCV和matlab mat文件操作

1. 平台

2. 项目配置

3. 代码的编写

公告

Visual Studio 控制台应用程序同时使用OpenCV和matlab mat文件操作