An approach of 3D model simplification for mobile phone based navigation application

Nowadays 3D concepts are tightly related to our lives. However one of the challenges for 3D applications is the huge amount of datasets. Therefore data reduction is critical for the increasing applications, especially for limited memory and storage space devices, e.g. mobile phone. In this paper, we propose an approach of 3D model simplification for mobile phone based navigation application. This method is developed based on the data from 3D models of Finnish pavilion. Our objectives are to reduce the model to the reasonable size and keep original appearance and realize the localization of data storage for the display, rendering and navigating on mobile phone. We use 2D projections of 3D data and line sweeping methods to extract the key points of models and data reduce to almost 4 percent of the original data. As a result, the indoor models of Finnish pavilion are successfully shown and apply for indoor navigation.