GCH 2016 - Eurographics Workshop on Graphics and Cultural Heritage

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https://diglib.eg.org/handle/10.2312/2630933

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Browsing GCH 2016 - Eurographics Workshop on Graphics and Cultural Heritage by Subject "and texture"

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    Color Restoration of Scanned Archaeological Artifacts with Repetitive Patterns
    (The Eurographics Association, 2016) Gilad-Glickman, Danit; Shimshoni, Ilan; Chiara Eva Catalano and Livio De Luca
    Our work addresses the problem of virtually restoring archaeological artifacts. Virtual restoration is the process of creating a noise-free model of a degraded object, to visualize its original appearance. Our work focuses on restoring the coloring of the object. We considered both 2D and 3D objects, including scans of ancient texts and 3D models of decorated pottery. Our denoising method exploits typical characteristics of archaeological artifacts, such as repetitive decoration motifs and a limited palette of colors. Our classification method is based on minimization of an energy function, which includes a correspondence term, to encourage consistent labeling of similar regions. The energy function is minimized using the Graph-Cuts algorithm.
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    Using Flash Photography and Image-Based Rendering to Document Cultural Heritage Artifacts
    (The Eurographics Association, 2016) Tetzlaff, Michael; Meyer, Gary; Chiara Eva Catalano and Livio De Luca
    A novel image-based rendering system is proposed for documenting cultural heritage artifacts. The system utilizes backscattering photography to acquire the initial pictures and derives estimates for the object's diffuse albedo, surface normals, and the specular reflectivity from the images. A projective texture mapping technique is used to create a novel view of the artifact by blending the original photographs and projecting them onto a mesh that is also derived from the photos. By weighting the images according to how they best depict the manner in which a virtual light source illuminates the artifact's surface, object relighting is also achieved.