简单的opencv实现bmp,jpeg格式转化的代码,该怎么处理

简单的opencv实现bmp,jpeg格式转化的代码
想实现jpeg转换为bmp文件的结果出现错误了
>change.obj : error LNK2019: unresolved external symbol _cvReleaseImage referenced in function _main
1>change.obj : error LNK2019: unresolved external symbol _cvSaveImage referenced in function _main
1>change.obj : error LNK2019: unresolved external symbol _cvLoadImage referenced in function _main
1>G:\调试专业用\opencv专用\change\Debug\change.exe : fatal error LNK1120: 3 unresolved externals
1>Build log was saved at "file://g:\调试专业用\opencv专用\change\change\Debug\BuildLog.htm"
1>change - 4 error(s), 1 warning(s)
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========
请问这是出现什么问题啦
[code=C/C++][/code]
#include "stdafx.h"
#include <cstdlib>
#include <iostream>
#include <vector>
#include <string>
#include <fstream>
using namespace std;
#include <cv.h>
#include <cxcore.h>
#include <highgui.h>

int main(int argc, char *argv[])
{
IplImage *src=cvLoadImage("searchbk.jpg");
if(!src)
{
cout<<"can not load the image : "<<endl;
}
cout<<"processing "<<endl;
cvSaveImage("searchbk.bmp",src);
cvReleaseImage(&src);
src = NULL;
src=cvLoadImage("searchbk.bmp");
if(!src)
{
cout<<"can not load the image : "<<endl;
}
cout<<"processing "<<endl;
cvSaveImage("aaa.jpg",src);
cvReleaseImage(&src);
src=NULL;
return 1;
}

------解决方案--------------------
没有连接你的opencv库，检查你的连接方式或者系统变量
------解决方案--------------------
http://blog.csdn.net/fengbingchun/article/details/7288079