Research and implementation of the SIFT-based improved algorithm on azimuth recognition

The implementation of azimuth recognition technology for current mobile phone platform is mainly based on hardware (such as gyroscopes) and software (such as compass). Those related methods have shortcomings or limitations. This article proposes an improved algorithm based on SIFT to implement azimuth recognition. This method uses the camera to obtain image data, matching with the data in the information base. Meanwhile, this method combines with GPS and image processing technology. The experimental results show that the method is feasible. It also shows good performance in both accuracy and real-time.