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Visualization of Coherent Structures of Light Transport

Zirr, Tobias 1; Ament, Marco 1; Dachsbacher, Carsten 1
1 Karlsruher Institut für Technologie (KIT)

Abstract:

Inspired by vector field topology, an established tool for the extraction and identification of important features of flows and vector fields, we develop means for the analysis of the structure of light transport. For that, we derive an analogy to vector field topology that defines coherent structures in light transport. We also introduce Finite-Time Path Deflection (FTPD), a scalar quantity that represents the deflection characteristic of all light transport paths passing through a given point in space. For virtual scenes, the FTPD can be computed directly using path-space Monte Carlo integration. We visualize the FTPD field for several example scenes and discuss the revealed structures. Lastly, we show that the coherent regions visualized by the FTPD are closely related to the coherent regions in our new topologically-motivated analysis of light transport. FTPD visualizations are thus also visualizations of the structure of light transport.


Originalveröffentlichung
DOI: 10.1111/cgf.12661
Scopus
Zitationen: 6
Web of Science
Zitationen: 5
Dimensions
Zitationen: 6
Zugehörige Institution(en) am KIT Institut für Visualisierung und Datenanalyse (IVD)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 0167-7055
KITopen-ID: 1000049925
HGF-Programm 46.12.02 (POF III, LK 01) Data Activities
Erschienen in Computer Graphics Forum
Verlag John Wiley and Sons
Band 34
Heft 3
Seiten 491-500
Nachgewiesen in Dimensions
Scopus
Web of Science
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