Using opencv java , you can develop web application which uses opencv image processing libraries on the server. Prerequisite: 1.) Eclipse Java J2EE version. 2.) Install opencv using configure and download opencv Now, we will define OpenCV as a user library in Eclipse, so we can reuse the configuration for any project. Launch Eclipse and select Window –> Preferences from the menu. Navigate under Java –> Build Path –> User Libraries and click New... . Enter a name, e.g. OpenCV-2.4.9 , for your new library. Now select your new user library and click Add External JARs... . Browse through /home/anish/opencv-2.4.9/build/lib and select opencv-249.jar . After adding the jar, extend the opencv-249.jar and select Native library location and press Edit... . Select External Folder... and browse to select the folder /home/anish/opencv-2.4.9 . If you have a 32-bit system you need to select the x86 folder instead of x64 . Your user library c