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Tuesday, March 27 • 2:00pm - 6:15pm
5 - RTI and Graphical Visualisation

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This paper will consider the possibilities for the use of Reflectance Transformation Imaging (RTI) and specifically Polynomial Texture Mapping (PTM) in the simulation of archaeologically derived materials. PTM was designed to enable complex surface shading of simulated textures, as an enhancement to bump mapping. However, whilst PTM and RTI files cannot be included in the rendering pipeline of standard tools such as Mental Ray we discuss in this paper the opportunities for repurposing RTI data in visualisation work.RTI is unique in allowing for the capture of a high resolution, highly versatile surface record whilst utilising commonly available, highly affordable equipment and software. Consequently RTI has become increasingly ubiquitous as a method for archaeological recording and a large and growing body of data exists. This paper will present some of the techniques which have been developed at the archaeological Computing Research Group at the University of Southampton which allow RTI data to be adapted and meaningfully incorporated into conventional rendering pipelines.The presentation will describe several projects including the reconstruction of the paintwork of the Roman Statuary from Herculaneum and the virtual reconstruction of the House of the Stags from Herculaneum all of which have incorporated RTI data in different ways. The methods covered in this paper will include the re-use and adaptation of normal maps generated from RTI data, the use of RTI data as a means of conducting metric comparisons with rendered outputs.


Speakers
GB

Gareth Beale

University of Southampton
My PhD is an AHRC funded Collaborative Doctoral Award, with Herculaneum Conservation Project and the University of Southampton.
GB

Grant Bryan Jeffrey Cox

Southampton University
avatar for Graeme  Earl

Graeme Earl

Really excited about CAA2012, and really grateful to the fantastic people who have worked themselves into the ground to make it happen. I hope the conference is cool and that people get a sense of what the Archaeological Computing Research Group and sotonDH are about.
avatar for Hembo Pagi

Hembo Pagi

Archaeological Computing Research Group | University of Southampton


Tuesday March 27, 2012 2:00pm - 6:15pm
Building 65, 1177 Streamed into room 1095

Attendees (12)