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Title: Perceptually images of Conimbriga using hight dynamic range
Authors: Gonçalves, Alexandrino José Marques
Advisor: Moura, João Paulo
Chalmers, Alan
Issue Date: 2010
Abstract: It is widely recognized that new technologies can play an important role in the interpretation of our cultural heritage legacy. One of the main fields of application is, surely, virtual reconstructions of ancient historical environments, especially those that don‟t exist any more. This has become a powerful tool providing a better understanding of our past, and thereby, allowing us to attain a glimpse of the environments in which our ancestors lived. In this domain, the way we see such reconstructed environments is particularly important in order to establish an accurate interpretation of that historical setting. However, the desired visual accuracy in the representation of any archaeological scenario is strictly related to the technology used to visualize it. High Dynamic Range (HDR) technology encompasses the capacity to produce visual results similar to the visual acuity of the human eye, particularly in extreme lighting conditions, such as bright light or dim environments. In this thesis we present an ancient flame light simulation method and a perceptual visual user study with HDR images of Roman mosaics and frescoes, illuminated by luminaries of that period, located in one of the most impressive monuments in the ruins of Conimbriga, Portugal. With our work we intend to demonstrate how the use of this particular low intensity Roman light, when compared to other modern illumination, affects the subjects' perception of ancient artefacts and influences the scenario viewing pattern. To sustain this procedure, we researched the process of accurate Roman flame simulation by physically rebuilding a Roman lucerna and using real light data in the virtual reconstruction. Since all stages of this process were executed having the full HDR pipeline, from creation to visualization, as a technological support, we also intend to establish real benefits of using HDR imagery in a cultural heritage context.
Description: Tese de Doutoramento em Informática
Document Type: Doctoral Thesis
Appears in Collections:OLD - Teses de Doutoramento

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