A Client-Server Approach to Image-Based Rendering on Mobile Terminals

Kadi Bouatouch (1) , Gérald Point (2, 3) , Gwenola Thomas (2, 3)

1 SIAMES - Computer generated images, animation, modeling and simulation
2 IPARLA - Visualization and manipulation of complex data on wireless mobile devices
3 LaBRI - Laboratoire Bordelais de Recherche en Informatique

This report shows how to use IBR methods to make possible the rendering of complex scenes on a mobile terminal, such as a PDA, while using a client/ server architecture. The PDA represents the client of a server which computes a very small set of key images (to avoid latency time that would affect interactivity) of a complex 3D scene and transmits them on demand to the client across a low bandwidth network. The client utilizes these images to use a warping technique to compute new images as seen by intermediate cameras (using an IBR technique) whose positions and directions are chosen interactively by the user by moving the stylus of a PDA. The most difficult problem is how to place the cameras (capturing the key images) which allow an efficient warping avoiding artifacts, such as holes, due to occlusions and exposures. Providing a general solution to the problem of camera placement is a hard task. In this report we address only the case of urban scenes.

Mots clés: CLIENT/SERVER; 3D SCENES RENDERING; WARPING; IMAGE BASED RENDERING; LOW-BANDWIDTH NETWORK; PDA; CAMERA PLACEMENT

Domaines: Synthèse d'image et réalité virtuelle [cs.GR]; Génie logiciel [cs.SE]

Kadi Bouatouch, Gérald Point, Gwenola Thomas. A Client-Server Approach to Image-Based Rendering on Mobile Terminals. [Research Report] RR-5447, INRIA. 2005, pp.29. ⟨inria-00000127⟩