本文使用的是matlab2012b、VS2010和OpenCV249

1、打开matlab

2、输入mex -setup

Welcome to mex -setup.  This utility will help you set up

a default compiler.  For a list of supported compilers, see

http://www.mathworks.com/support/compilers/R2012b/win64.html

Please choose your compiler for building MEX-files:

Would you like mex to locate installed compilers [y]/n?

输入：y

Select a compiler:

[1] Microsoft Visual C++ 2010 in d:\Microsoft Visual Studio 10.0

[0] None

Compiler:

输入：1

Please verify your choices:

Compiler: Microsoft Visual C++ 2010

Location: d:\Microsoft Visual Studio 10.0

Are these correct [y]/n?

输入：y

***************************************************************************

Warning: MEX-files generated using Microsoft Visual C++ 2010 require

that Microsoft Visual Studio 2010 run-time libraries be

available on the computer they are run on.

If you plan to redistribute your MEX-files to other MATLAB

users, be sure that they have the run-time libraries.

***************************************************************************

Trying to update options file: C:\Users\Administrator\AppData\Roaming\MathWorks\MATLAB\R2012b\mexopts.bat

From template:              D:\MATLAB\R2012b\bin\win64\mexopts\msvc100opts.bat

Done . . .

**************************************************************************

Warning: The MATLAB C and Fortran API has changed to support MATLAB

variables with more than 2^32-1 elements.  In the near future

you will be required to update your code to utilize the new

API. You can find more information about this at:

http://www.mathworks.com/help/techdoc/matlab_external/bsflnue-1.html

Building with the -largeArrayDims option enables the new API.

**************************************************************************

3、mex -v

-> Default options filename found in C:\Users\Administrator\AppData\Roaming\MathWorks\MATLAB\R2012b

----------------------------------------------------------------

->    Options file  = C:\Users\Administrator\AppData\Roaming\MathWorks\MATLAB\R2012b\mexopts.bat

MATLAB = D:\MATLAB\R2012b

->    COMPILER= cl

->    Compiler flags:

COMPFLAGS= /c /GR /W3 /EHs /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE

/D_SECURE_SCL=0 /DMATLAB_MEX_FILE /nologo /MD

OPTIMFLAGS   = /O2 /Oy- /DNDEBUG

DEBUGFLAGS   = /Z7

arguments    =

Name switch = /Fo*****

*****

*****

4、选中C:\Users\Administrator\AppData\Roaming\MathWorks\MATLAB\R2012b\mexopts.bat  右键 选择 open selection

打开mexopts.bat

修改以后红色部分

setINCLUDE=%VCINSTALLDIR%\INCLUDE;%VCINSTALLDIR%\ATLMFC\INCLUDE;%LINKERDIR%\include;%INCLUDE%;D:\software\opencv249\opencv\build\include;D:\software\opencv249\opencv\build\include\opencv;D:\software\opencv249\opencv\build\include\opencv2【添加opencv的include目录】

set LIB=%VCINSTALLDIR%\LIB\amd64;%VCINSTALLDIR%\ATLMFC\LIB\amd64;%LINKERDIR%\lib\x64;%MATLAB%\extern\lib\win64;%LIB%;D:\software\opencv249\opencv\build\x64\vc10\lib【添加opencv的lib目录】

set LINKFLAGS=/dll /export:%ENTRYPOINT% /LIBPATH:"%LIBLOC%"opencv_ml249d.lib opencv_calib3d249d.lib opencv_contrib249d.lib opencv_core249d.lib opencv_features2d249d.lib opencv_flann249d.lib opencv_gpu249d.lib opencv_highgui249d.lib opencv_imgproc249d.lib opencv_legacy249d.lib opencv_objdetect249d.lib opencv_ts249d.lib opencv_video249d.lib opencv_nonfree249d.lib opencv_ocl249d.lib opencv_photo249d.lib opencv_stitching249d.lib opencv_superres249d.lib opencv_videostab249d.lib opencv_objdetect249.lib opencv_ts249.lib opencv_video249.lib opencv_nonfree249.lib opencv_ocl249.lib opencv_photo249.lib opencv_stitching249.lib opencv_superres249.lib opencv_videostab249.lib opencv_calib3d249.lib opencv_contrib249.lib opencv_core249.lib opencv_features2d249.lib opencv_flann249.lib opencv_gpu249.lib opencv_highgui249.lib opencv_imgproc249.lib opencv_legacy249.lib opencv_ml249.liblibmx.lib libmex.lib libmat.lib /MACHINE:X64 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /manifest /incremental:NO /implib:"%LIB_NAME%.x" /MAP:"%OUTDIR%%MEX_NAME%%MEX_EXT%.map"【添加lib文件】

5、写一个demo，测试一下

test.cpp

#include "mex.h"

#include

#include

#include

#include

#include "opencv2/highgui/highgui.hpp"

#include

#include "opencv2/imgproc/imgproc.hpp"

#include "opencv2/ml/ml.hpp"

using namespace cv;

using namespace std;

void mexFunction (int nlhs, mxArray *plhs[], // 输出参数个数，及输出参数数组

int nrhs, const mxArray *prhs[]) // 输入参数个数，及输入参数数组

{

double scale = 1.3;

char name[256];

int buflens =mxGetNumberOfElements(prhs[0]);

mxGetString(prhs[0], name, buflens+1);

if(!mxIsChar(prhs[0]))

{

mexErrMsgTxt("First parameter must be string/n");

}

mexPrintf(name);

IplImage * img = cvLoadImage(name, 1);

if(img->imageData == NULL)

{

mexErrMsgTxt("Error in image/n");

}

cvNamedWindow("1",1);

//imshow("1",mat);

cvShowImage("1",img);

cvWaitKey(0);

return;

}

运行：mex test.cpp

mex('lena.jpg');