Longhurst, Peter, Debattista, Kurt and Chalmers, Alan (2005) Snapshot : a rapid technique for driving a selective global illumination renderer. In: WSCG 2005 The 13th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2005, Plzen - Bory, Czech Republic, 31 Jan-4 Feb 2005. Published in: WSCG '2005 : the 13-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2005 in co-operation with Eurographics ISSN 9788090310070 .

Research output not available from this repository.

Request-a-Copy directly from author or use local Library Get it For Me service.

Request Changes to record.

Abstract

Even with modern graphics hardware, it is still not possible to achieve high fidelity global illumination renderings of complex scenes in real time. However, as these images are produced for human observers, we may exploit the fact that not everything is perceived when viewing the scene with our eyes. We are drawn to certain salient areas of an image. Taking this into account, it is possible to selectively render parts of an image at high quality and the rest of the scene at lower quality without the user being aware of this difference.

Methods exist for calculating which parts of an image are perceptually important, but generally they rely on having a fully rendered image to process. It is thus only possible to prioritise pixels to speed up the rendering of a frame once that frame has been rendered: an obvious catch. In pre-scripted animated sequences it is indeed possible to use rendered key frames to extract the necessary information, however, the cost of rendering such key frames could be significant and this is not appropriate for any interactive application. This paper presents a high speed OpenGL generated "Snapshot" of a frame to generate a saliency map to efficiently drive the selective global illumination rendering of an animated sequence.

Item Type:	Conference Item (Paper)
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title:	WSCG '2005 : the 13-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2005 in co-operation with Eurographics
Publisher:	University of West Bohemia
ISSN:	9788090310070
Official Date:	2005
Dates:	Date Event 2005 Published
Status:	Peer Reviewed
Publication Status:	Published
Conference Paper Type:	Paper
Title of Event:	WSCG 2005 The 13th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2005
Type of Event:	Conference
Location of Event:	Plzen - Bory, Czech Republic
Date(s) of Event:	31 Jan-4 Feb 2005

Request changes or add full text files to a record

Repository staff actions (login required)

View Item