The most mature tool in this suite, Reflectance Transformation Imaging (RTI), has proven to be of tremendous value for creating digital surrogates of cultural heritage objects of remarkable quality. Used alone or in combination with stereo photogrammetry, RTI is extremely effective in the documentation and analysis of rock art.This project brought key experts in these field domains together to produce a self-contained program that puts these techniques in the hands of archaeology and conservation professionals, non-technical Native American audiences, and the interested public.
This project developed a comprehensive program in onsite and online training of cost-effective, easy-to-use tools to digitally capture empirical data from rock art and petroglyph sites nationally. This raw data is designed to yield ‘born-archival,’ 3-dimensional (3D), digital representations that disclose, through transparent and precise mathematical enhancement, features unseen for thousands of years, without the need of specialists or specialized equipment.
The hands-on workshop was held at the Presidio of San Francisco from July 23-24, 2009, and provided training materials, including do-it-yourself (DIY) guides and videos.
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This workshop was made possible through Grant MT-2210-09-NC-01 from the National Center for Preservation Technology and Training (NCPTT).