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    Multi-resolution Modeling of Complex and Detailed Cultural Heritage
    (The Eurographics Association, 2008) Remondino, Fabio; Girardi, Stefano; Gonzo, Lorenzo; Rizzi, Alessandro; Michael Ashley and Sorin Hermon and Alberto Proenca and Karina Rodriguez-Echavarria
    The article reports the interdisciplinary project of the virtualization of the Great Inscription of Gortyna (Crete) for 3D documentation, structural studies and physical replica purposes. The digitization of the longest epigraphic text of the Greek civilization (6 m long and 1.75 m high, with ca 2-3 mm depth engraved letters) and its surrounding heritage area (ca 30 x 30 m), required a long planning and the construction of a dedicated acquisition system to speed up the surveying time, limited to few hours per day. Primarily range sensors were employed in a multi-resolution way, digitizing detailed parts in highresolution and less smoothed areas with lower geometric resolution. Some selected areas were also modeled with our multi-photo geometrically constrained image matching approach to demonstrate that the same accuracy and details can be achieved using either scanners or photogrammetry. The derived 3D model of the heritage is now the basis for further archaeological studies on the incision techniques and a deeper structural analysis on the monument. The challenges of the work stay in the acquisition, processing and integration of the multi-resolution data as well as their visualization.
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    3D Modeling of Large and Complex Site Using Multi-sensor Integration and Multi-resolution Data
    (The Eurographics Association, 2008) Guidi, Gabriele; Remondino, Fabio; Russo, Michele; Menna, Fabio; Rizzi, Alessandro; Michael Ashley and Sorin Hermon and Alberto Proenca and Karina Rodriguez-Echavarria
    The article describes a multi-resolution approach developed for the 3D modeling of the entire Roman Forum in Pompeii, Italy. The archaeological area, approximately 150 x 80 m, contains more than 350 finds spread all over the Forum as well as larger mural structures of previous buildings and temples. The interdisciplinary 3D modeling work consists of a multi-scale image- and range-based digital documentation method developed to fulfil all the surveying and archaeological needs and exploit all the potentialities of the actual 3D modeling techniques. Data's resolution spans from few decimetres down to few millimetres, both in geometry and texture. The employed surveying methodologies have pros and cons which will be addressed and discussed. The first results of the integration of the different 3D data in a unique and seamless textured 3D model will be presented.