I-MOVE: towards the use of a mobile 3D GeoBrowser framework for urban mobility decision making

Construction and Optimization of Three-Dimensional Disaster Scenes within Mobile Virtual Reality

“…Models of 3D disaster scenes typically include terrain models, disaster simulation models, house models, and road models [6,11,12,14,16]. Tasks similar to the 3D rendering of disaster scenes in mobile VR are the PC-based 3D visualization of disaster scenes [6,8,17,19] and the 3D visualization of terrain on mobile phones [35][36][37][38][39][40]. In PC-based 3D disaster scene visualization, because of the high performance and relatively uniform screen sizes and screen resolutions of PCs, a single scene data representation is typically adopted.…”

“…Magliocchetti et al introduced a method for the 3D visualization of terrain models on smart phones, such as the HTC Touch Magic and HTC Nexus One. This method follows certain data access standards in the geospatial domain, such as the Web Map Service (WMS), and has a relatively high scene-rendering frame rate [38]. Trujillo and Suárez implemented a method for the 3D visualization of terrain models, based on a virtual globe, on mobile devices such as the iPad 2, the Samsung Galaxy Tab, and the iPhone 4 [39,40].…”

“…The work reviewed above mainly achieved the 3D visualization of terrain models based on mobile phones. Because of the low mobile phone performance and slow network speeds at the time, some of the reported work needed to rely on specific server-and client-side programs to perform collaborative visualization, such as hybrid rendering based on C/S [35][36][37], or the real-time conversion of large-sized tiles on servers into small-sized tiles for transmission over the network [38]. These methods are not optimal for the performance and display environments of current smartphones, and they are also very tedious to implement.…”

“…However, as mentioned above, the models of 3D disaster scenes usually include large-data terrain models, disaster simulation models, etc., so it is necessary to reduce the amount of scene data in order to improve the scene-rendering frame rate, so as to satisfy the high frame-rate requirements for the stereoscopic rendering of 3D disaster scenes based in mobile VR. However, the existing methods for reducing the amount of scene data are either for high-performance PCs [6,8,17,19] or for earlier low-performance mobile phones [35][36][37][38][39][40], and are not suitable for the performance and display environments of current smartphones. Therefore, it is necessary to explore new scene data reduction methods, adapted for the performance and display environments of current smartphones, in order to achieve high scene-rendering frame rates.…”

Design and Evaluation of an "Around the SmartPhone" Technique for 3D Manipulations on Distant Display

“…3D interactive virtual environments (3DVE) tend to get out of the sole hands of 3D experts using dedicated devices [11]. Indeed 3DVE can now be found in many private activities such as on web sites to assist house furniture selection [23], in daily mobile contexts [25] and to play public 3D games [41]; in professional contexts to visualize scientific 3D data [38], to explore 3D data during meetings [16] or to create and edit 3D model [2]; and even in museums [29].…”