Configure OpenCV with Visual Studio 2008 in Windows Xp

These days I'm working on my final year project 'Real Time Sign Language recognition system' .I get the input from using a normal web camera and system will identify the hand posture or gesture.So in here i have to deal with technologies like Computer Vision,Image Processing and Machine Learning.Then I found a very powerful very powerful computer vision Library called OpenCV (Open Source Computer Vision).OpenCV library written mainly in C that focuses on real time video processing.In this post is about how to Install OpenCV in windows XP machine and and how to configure Opencv with Visual studio 2008

1. Download the openCV
OpenCv is available at http://sourceforge.net/projects/opencvlibrary/. For may project im using openCV 1.0. To download OpenCV 1.0 click 'View all Files' and then u can Download openCV 1.0 for windows.





2.Install Opencv


After install the openCV make sure that to set System Properties->Environment Variable-> Path to the bin folder in OpenCV

After that restart Your machine

Then go to ..OpenCV\samples\c folder.Then you can see lot of samples their.Try to run those samples.If those samples are run without an error your openCV installation is successful.

3. Opencv Configure with Visual Studio 2008

Create new Win32 Concole application.



Go to Properties


In the Project Properties Page go to Configuration Properties -> C/C++ ->General



To set 'Additional Include Directories' copy and paste the following text:

"C:\Program Files\OpenCV\cxcore\include";"C:\Program Files\OpenCV\cv\include\";"C:\Program Files\OpenCV\cvaux\include";"C:\Program Files\OpenCV\otherlibs\highgui"
Change above according to your installation path

Next Project Properties Page go to Configuration Properties -> Linker ->Inputs


To set 'Additional Dependencies' copy and paste following text:

"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"

In here is space separation, Instead of above semicolon (;) seperation

Now your all configuration is finish.Then you can copy source code from samples folder and and run in the Visual Studio 2008 environment

Ralis 2.2 with mysql Resolved errors

When you work in Rails 2.2 , with mysql you may get following error after installing mysql driver and trying to run the project.

!!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install
the mysql gem and try again: gem install mysql.
rake aborted!
126: The specified module could not be found. - C:/Ruby/lib/ruby/gems/1.8/gems
/mysql-2.8.1-x86-mswin32/lib/1.8/mysql_api.so

The problem for above error is, MySQL 5.1 client library doesn't play well with Rails.

Solution is

• download older MySQL client library, for example one from InstantRails: http://instantrails.rubyforge.org/svn/t ... bmySQL.dll

• copy the downloaded file to C:\Ruby\bin (or wherever you installed Ruby)

• restart MySQL server

Rails Set the Index Page

Follow the steps given bellow
1. Delete public/index.html
2. Add 'map.root :controller => ""' to routes.rb
3. and then of course create the controller with the action index.