Information-Theoretic Refinement Criteria for Image Synthesis: An Intersection between Computer Graphics, Information Theory, and Complexity - Softcover

Rigau Vilalta, Jaume

 
9783836477314: Information-Theoretic Refinement Criteria for Image Synthesis: An Intersection between Computer Graphics, Information Theory, and Complexity
Softcover
ISBN 10: 3836477319 ISBN 13: 9783836477314
Verlag: VDM Verlag Dr. Müller, 2008

Inhaltsangabe

This work is framed within the context of computer graphics starting out from the intersection of three fields: rendering, information theory, and complexity.Initially, the concept of scene complexity is analysed from a geometric visibility point of view. Then, the main focus of this dissertation, the development of new refinement criteria for the global illumination problem is presented.Firstly, based on Shannon entropy, a set of pixel measures are defined. They are applied to supersampling in ray-tracing as refinement criteria, obtaining a new entropy-based adaptive sampling algorithm with a high rate quality versus cost. Secondly, based on Harvda-Charvát-Tsallis generalised entropy, new refinement criteria are defined for hierarchical radiosity. Oracles based on transported information, information smoothness, and mutual information are presented, with very significant results for the latter. And finally, three f-divergences are analysed as refinement criteria.These measures give us a rich variety of efficient and highly discriminative measures which are applicable to rendering in its pixel-driven (ray-tracing) and object-space (hierarchical radiosity) approaches.

Die Inhaltsangabe kann sich auf eine andere Ausgabe dieses Titels beziehen.

Reseña del editor

This work is framed within the context of computer graphics starting out from the intersection of three fields: rendering, information theory, and complexity. Initially, the concept of scene complexity is analysed from a geometric visibility point of view. Then, the main focus of this dissertation, the development of new refinement criteria for the global illumination problem is presented. Firstly, based on Shannon entropy, a set of pixel measures are defined. They are applied to supersampling in ray-tracing as refinement criteria, obtaining a new entropy-based adaptive sampling algorithm with a high rate quality versus cost. Secondly, based on Harvda-Charvát-Tsallis generalised entropy, new refinement criteria are defined for hierarchical radiosity. Oracles based on transported information, information smoothness, and mutual information are presented, with very significant results for the latter. And finally, three f-divergences are analysed as refinement criteria. These measures give us a rich variety of efficient and highly discriminative measures which are applicable to rendering in its pixel-driven (ray-tracing) and object-space (hierarchical radiosity) approaches.

Biografía del autor

Jaume Rigau is associate professor in Computer Science and member of the Graphics and Imaging Laboratory at the University of Girona, Spain. His research is based on the application of information theory to computer graphics and image processing. Rigau received the MS and PhD in Computer Science from the Technical University of Catalonia, Barcelona, Spain.

„Über diesen Titel“ kann sich auf eine andere Ausgabe dieses Titels beziehen.

Verlag
VDM Verlag Dr. Müller
Erscheinungsdatum
2008
Sprache
Englisch
ISBN 10 
3836477319
ISBN 13 
9783836477314
Einband
Tapa blanda
Anzahl der Seiten
208
Kontakt zum Hersteller
Nicht verfügbar
Verantwortliche Person
Nicht verfügbar