Happa, Jassim (2011) High-fidelity rendering and display of cultural heritage. PhD thesis, University of Warwick.

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Abstract

Many Cultural Heritage (CH) reconstructions today use black box rendering solutions with little regard to appropriate addition of lighting, material light reflectance properties or light transport algorithms. This may be in favour of faster computational performance or is simply not a priority (as long as the end result is visually convincing). This can lead to misrepresenting CH environments, both in their present and past forms. The handful of publications that do pay special attention to lighting, emphasise on case specific problems rather than attempting to generalise a rendering pipeline tailored to the needs of CH scenes. The dissertation presents a research framework to render CH scenes appropriately and novel approaches to document, estimate and accelerate global illumination for virtual archaeology purposes. First, three reconstruction case studies with an unbiased rendering pipeline in mind are presented. Second, a research framework to reverse-engineer the past (through high-fidelity rendering) is overviewed. Through this proposed framework, it is possible to create historically and physically accurate models based on input available today. The approach is an extension to the established Predictive Rendering pipeline by introducing a historical comparison component. Third, a novel method to preview appropriately lit virtual environments is presented. The method is particularly useful for CH rendition, extending Image-based Lighting to employ empirically captured illumination to relight interior CH scenes. It is intended as a fast high-quality preview method for CH models before a high-quality render is initiated, therefore also making it useful in a Predictive Rendering context. Finally, a study on uses of High Dynamic Range (HDR) Imaging specifically for CH documentation and display purposes is also presented. This includes the use of a novel prototype camera to illustrate a proof-of-concept on how to document vast dynamic ranges of light based on the needs of CH research using HDR video.

Item Type:	Thesis or Dissertation (PhD)
Subjects:	C Auxiliary Sciences of History > CC Archaeology Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software
Library of Congress Subject Headings (LCSH):	Cultural property -- Computer simulation, Virtual reality in archaeology, Virtual reality -- Lighting
Date:	2011
Institution:	University of Warwick
Theses Department:	School of Engineering
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Chalmers, Alan
Sponsors:	Lånekassen (Norway) ; Lise og Arnfinn Hejes fond
Extent:	vii, 237 leaves : ill.
Language:	eng
URI:	http://wrap.warwick.ac.uk/id/eprint/49417

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