Please use this identifier to cite or link to this item: https://repositorio-aberto.up.pt/handle/10216/93153
Author(s): Maximino Bessa
António Coelho
Alan Chalmers
Title: Selective rendering quality for an efficient navigational aid in virtual urban environments on mobile platforms
Issue Date: 2005
Abstract: The perception that we have of our world depends on the task we are currently performing in the environment, so if we are driving a car we will pay attention to the objects that are visually important to the task we are performing such as, the road, road signs, other vehicles, etc. The same is true when we explore virtual environments. The creation of high-fidelity 3D maps on mobile devices to aid navigation in urban environments is computationally very expensive, precluding achieving this quality at interactive rates. In this paper we present a case study to show how the human visual system may be exploited, when viewers are undertaking a task, to reduce the overall quality of the displayed image, without the users being aware of this reduction in quality. The displayed images are selectively rendered with the key features used to identify location and orientation in a 3D urban environment produced in high quality and the remainder of the image in low quality.
Subject: Computação gráfica, Engenharia electrotécnica, electrónica e informática
Computer graphics, Electrical engineering, Electronic engineering, Information engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia electrotécnica, electrónica e informática
Engineering and technology::Electrical engineering, Electronic engineering, Information engineering
URI: http://hdl.handle.net/10216/93153
Source: Proceedings of the 4th International Conference on Mobile and Ubiquitous Multimedia, MUM '05
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

Files in This Item:
File Description SizeFormat 
52380.pdf
  Restricted Access
342.75 kBAdobe PDF    Request a copy from the Author(s)


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.