OpenCV学习笔记（12）OpenCV调用Matlab函数进行保存视频的尝试

最新推荐文章于 2024-07-22 17:00:50 发布

原创

最新推荐文章于 2024-07-22 17:00:50 发布 · 1w 阅读

14 ·

CC 4.0 BY-SA版权

文章标签：

#matlab #exception #microsoft #c #thread #fun

本文记录了在OpenCV2.1中由于ffmpeg问题，尝试使用Matlab进行视频保存的过程。首先在Matlab中配置VS2008 SP1作为C编译器，然后编写并编译m文件`fun_saveVideo.m`为动态链接库。接着将生成的头文件、库文件和dll文件放入项目目录，并在Visual Studio中设置相应路径和链接库。最后在项目中引入头文件并实现函数调用。

OpenCV2.1 的 ffmpeg 似乎编译有问题，不能正常进行视频读写方面的操作，因此尝试调用 Matlab 来完成，不过也还没成功，详细记录如下：

1、在 Matlab 中通过 mex –setup 和 mbuild –setup 指定 VS2008 SP1 作为 C 编译器。

2、编写保存视频的 fun_saveVideo.m 文件如下：

function fun_saveVideo(img, fps, flag)
if flag == 0
    mov = avifile('disp.avi','compression','Indeo5','fps',fps,'quality',90);
end
if flag == 1
    mov = addframe(mov,img);
end 
if flag == 2
    mov = close(mov);
end

3、使用如下指令将 fun_saveVideo.m 编译为动态链接库供 VC 调用：

mcc -W cpplib:libSaveVideo -T link:lib fun_saveVideo.m

4、将生成的 libSaveVideo.h, libSaveVideo.lib, libSaveVideo.dll 三个文件复制到项目文件夹下，其中 lib 和 dll 文件复制到 debug 和 release 子文件夹内。

5、在 VS 界面 " /Tools / Options / Projects and Solutions / VC++ Directories" 中，在 " Include files " 和 " Library files " 中分别添加下列目录（默认安装位置）：

" D:/MATLAB_R2009a/extern/include " " D:/MATLAB_R2009a/extern/lib/win32/microsoft "

6、在项目属性" /Project / Properties / Configuration Properties / Linker / Input " 中添加 mclmcrrt.lib, libmx.lib, libmat.lib, mclmcr.lib 。

7、在项目的 Solution Explorer 的 Header Files 中添加 libSaveVideo.h ，在该文件的最下面可以看到函数的声明：

extern LIB_libSaveVideo_CPP_API void MW_CALL_CONV fun_saveVideo(const mwArray& img
                                                                , const mwArray& fps
                                                                , const mwArray& flag);

8、在 ******(项目名称).h 中加入如下代码（如果不加 ‘#pragma comment(lib,’”libSaveVideo”)’，则编译链接时会出现错误“error LNK2019: unresolved external symbol”）：

#pragma once
#pragma comment(lib,"libSaveVideo.lib")  // new add

#ifndef __AFXWIN_H__
    #error "include 'stdafx.h' before including this file for PCH"
#endif


#include "resource.h"        // main symbols
#include "cxcore.h"
#include "cv.h"
#include "highgui.h"
#include "camerads.h"

#include "mclmcr.h"        // new add
#include "matrix.h"        // new add
#include "mclcppclass.h"   // new add
#include "libSaveVideo.h"  // new add

...
...

9、函数调用的具体代码：

   // 初始化Matlab生成的saveVideo函数
    libSaveVideoInitialize();
    double fps =10, flag = 0;
    mwSize dims[3];
    dims[0] = img_size.height; dims[1] = img_size.width; dims[2] = 3;
    int len = img_size.height * img_size.width *3;
    mwArray mwfps(1, 1, mxDOUBLE_CLASS);
    mwArray mwflag(1, 1, mxDOUBLE_CLASS);
    mwArray mwdisp( 3, dims, mxUINT8_CLASS, mxREAL);
    mwfps.SetData(&fps, 1);
    mwflag.SetData(&flag, 1);
    ...
    while(...)
    {
        ...
        if (saveVideo)
        {
            IplImage* dispT = cvCreateImage(cvSize(img_size.height, img_size.width), CV_8UC3, 3);
            cvTranspose(tmp_img1, dispT);
            mwdisp.SetData((double*)tmp_img1->imageData, len);
            if (flag==0)
            {
                fun_saveVideo(mwdisp, mwfps, mwflag);
                flag = 1;
            }
            else
            {
                fun_saveVideo(mwdisp, mwfps, mwflag);
            }
            cvReleaseImage(&dispT);
        }
        ...
    }
    // 结束保存视频
    flag = 2;
    fun_saveVideo(mwdisp, mwfps, mwflag);
    libSaveVideoTerminate();
    mclTerminateApplication();

10、编译链接都通过，但实际运行时出错，可能是 m 文件编写不合理 或其它原因，有待进一步分析。

'RobotVision.exe': Loaded 'D:/OpenCV2.1/Projects/RobotVision/Debug/RobotVision.exe', Symbols loaded.
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/ntdll.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/kernel32.dll'
'RobotVision.exe': Loaded 'D:/OpenCV2.1/bin/cv210d.dll'
'RobotVision.exe': Loaded 'D:/OpenCV2.1/bin/cxcore210d.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/WinSxS/x86_Microsoft.VC90.DebugCRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_597c3456/msvcp90d.dll', Symbols loaded.
'RobotVision.exe': Loaded 'C:/WINDOWS/WinSxS/x86_Microsoft.VC90.DebugCRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_597c3456/msvcr90d.dll', Symbols loaded.
'RobotVision.exe': Loaded 'D:/OpenCV2.1/bin/highgui210d.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/user32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/gdi32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/ole32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/advapi32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/rpcrt4.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/secur32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msvcrt.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/WinSxS/x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83/comctl32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/shlwapi.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/avifil32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/winmm.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msacm32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msvfw32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/shell32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/avicap32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/version.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/olepro32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/oleaut32.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/mclmcrrt710.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/psapi.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/WinSxS/x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_e6967989/msvcp80.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/WinSxS/x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_e6967989/msvcr80.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/WinSxS/x86_Microsoft.VC90.DebugMFC_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_2a62a75b/mfc90ud.dll', Symbols loaded.
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msimg32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/imagehlp.dll'
'RobotVision.exe': Loaded 'D:/OpenCV2.1/Projects/RobotVision/Debug/libSaveVideo.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/imm32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/lpk.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/usp10.dll'
'RobotVision.exe': Loaded 'C:/Program Files/Google/Google Desktop Search/GoogleDesktopNetwork3.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/ws2_32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/ws2help.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/uxtheme.dll'
'RobotVision.exe': Loaded 'C:/Program Files/360/360safe/safemon/safemon.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/dbghelp.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msvcp60.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/wininet.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/normaliz.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/urlmon.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/iertutil.dll'
'RobotVision.exe': Loaded 'C:/Program Files/Norton Internet Security/Engine/16.8.0.41/asOEHook.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/MSCTF.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/WinSxS/x86_Microsoft.VC90.MFCLOC_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_15fc9313/mfc90chs.dll', Binary was not built with debug information.
'RobotVision.exe': Unloaded 'C:/Program Files/Google/Google Desktop Search/GoogleDesktopNetwork3.dll'
The thread 'Win32 Thread' (0x1150) has exited with code 0 (0x0).
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msctfime.ime'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/clbcatq.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/comres.dll'
'RobotVision.exe': Loaded 'E:/蟑螂机器人/双目视频处理/PC104板与系统安装/VC6EN/VC6EN/OS/SYSTEM/MSCOMM32.OCX', Cannot find or open a required DBG file.
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/sxs.dll'
Warning: initial dialog data is out of range.
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/devenum.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/setupapi.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/wintrust.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/crypt32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msasn1.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msdmo.dll'
Warning: initial dialog data is out of range.
'RobotVision.exe': Loaded 'D:/Program Files/Youdao/DeskDict2/TextExtractHelper.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/quartz.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/qedit.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/comdlg32.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/ksproxy.ax'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/ksuser.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/vidcap.ax'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/atl.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/kswdmcap.ax'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/mfc42.dll'
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/mfc42loc.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'C:/WINDOWS/system32/msyuv.dll'
Warning: initial dialog data is out of range.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/libmx.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/libut.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/libexpat.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/icuuc38.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/icudt38.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/icuio38.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/icuin38.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/libmwfl.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/boost_date_time-vc80-mt-1_36.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/boost_signals-vc80-mt-1_36.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/boost_system-vc80-mt-1_36.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/boost_thread-vc80-mt-1_36.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/zlib1.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/libmat.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/libhdf5.dll', Binary was not built with debug information.
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/mclmcr.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/mcr.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/iqm.dll'
'RobotVision.exe': Loaded 'D:/MATLAB_R2009a/bin/win32/libmws