Sandarenu's Blog

Finally our final year project is finished. As I've promised in my previous post I'm going to do few posts on OpenCV. In this post I'm going to tell you how to configure MS Visual Studio 2005 to work with OpenCV library. 

Step 1: Installiny OpenCV

First you have to download the OpenCV library from Sourceforge and run the installer. It will install OpenCV library on your computer. By default it will be installed to "C:\Program Files\OpenCV". Installer will add "C:\Program Files\OpenCV\bin" to system's PATH variable. But sometimes this do not happen properly. In such cases you'll have to add OpenCV bin directory manually to the system's PATH.

Download OpenCV: http://sourceforge.net/projects/opencvlibrary/

Step 2: Configuring VS 2005

In order to use OpenCv from VS you have to add libraries and header files to projects path. Create Win32 Console Application in VS 2005. Then right click the project form the Solution Explorer and select Properties.

Under "Configuration Properties -> C/C++ -> General" put following folders to "Additional Include Directories".

C:\Program Files\OpenCV\cxcore\include
C:\Program Files\OpenCV\cv\include\
C:\Program Files\OpenCV\cvaux\include
C:\Program Files\OpenCV\otherlibs\highgui

Then under "Configuration Properties -> Linker -> Input" put following folders to "Additional Dependencies". Add them line by line with double quotes.

"C:\Program Files\OpenCV\lib\cv.lib"
"C:\Program Files\OpenCV\lib\cvaux.lib"
"C:\Program Files\OpenCV\lib\cxcore.lib"
"C:\Program Files\OpenCV\lib\highgui.lib"

Sometimes it is possible that you don't have above lib files in "C:\Program Files\OpenCV\lib" folder. In such situations you just have to compile the OpenCV solution.

It is also possible for you to get complains regarding corex100.dll (it can be corexXXX.dll) when running your OpenCV application. If you get such error build the OpenCV solution and check whether the "C:\Program Files\OpenCV\bin" folder is in your system PATH, if not you either have to add that to the path or copy all the DLLs in bin folder to C:\WINDOWS\SYSTEM32 folder.

So that basically what you have to do to configure VS2005. You can check whether you have configured the VS correctly by compiling and running some sample applications in the "C:\Program Files\OpenCV\samples\c" folder. So have fun with OpenCV.

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It's being nearly a month or so I've started using Firefox 3 browser. Yes it has lot of cool new features such as new address bar. But I'm having a big problem with new FF3. It is giving me "Network Timeout Error" all the time.

I have to do multiple refreshes to view the page, and if the page is having lost of images than those are also not loaded.  But when I checked the same site with IE, it loads the page correctly and without any issues.

When I searched the Google for this issue I found that FF3 is having some issue related to this Timeout problem. http://wiki.mozilla.org/Firefox3_Timeout_Problem

So until a fix is available I'm going back to good old FF2.

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If you are using Gmail this may the security feature that you were looking for ages... Now Google let you monitor your account activities and Sign out remotely. This is very good news for people like me because I access gmail from multiple computers, including from the computers at university labs.  Read more about this from

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 FormatFactory is a free application that can convert video, audio and images in to different file formats. It also supports batch file conversion as well. As reported by DownloadSquad is seems to be really good application.

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