Natural feature tracking for augmented reality -Setup clone this repositiora into you opencv for android folder. -Project Build if you are importing this project into eclipse, it may be necessary to add the NDKROOT variable to the project environment. Afterwards issue a full rebuild with ndk-build -B from withi the path_to_project/src folder -Application usage Run the application on your android handset. first press the menu button and select 'capture'. The application is now ready to capture the inital image of a planar target, you can do so by tapping onto the screen once. The application will now start tracking this initial view. In order to track another image unfortunately you have to restart the apllication.