3DOR 18

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https://diglib.eg.org/handle/10.2312/2632165

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Browsing 3DOR 18 by Subject "Information search and Retrieval"

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    Edge-based LBP Description of Surfaces with Colorimetric Patterns
    (The Eurographics Association, 2018) Thompson, Elia Moscoso; Biasotti, Silvia; Telea, Alex and Theoharis, Theoharis and Veltkamp, Remco
    In this paper we target the problem of the retrieval of colour patterns over surfaces. We generalize to surface tessellations the well known Local Binary Pattern (LBP) descriptor for images. The key concept of the LBP is to code the variability of the colour values around each pixel. In the case of a surface tessellation we adopt rings around vertices that are obtained with a sphere-mesh intersection driven by the edges of the mesh; for this reason, we name our method edgeLBP. Experimental results are provided to show how this description performs well for pattern retrieval, also when patterns come from degraded and corrupted archaeological fragments.
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    Experimental Similarity Assessment for a Collection of Fragmented Artifacts
    (The Eurographics Association, 2018) Biasotti, Silvia; Thompson, Elia Moscoso; Spagnuolo, Michela; Telea, Alex and Theoharis, Theoharis and Veltkamp, Remco
    In the Visual Heritage domain, search engines are expected to support archaeologists and curators to address cross-correlation and searching across multiple collections. Archaeological excavations return artifacts that often are damaged with parts that are fragmented in more pieces or totally missing. The notion of similarity among fragments cannot simply base on the geometric shape but style, material, color, decorations, etc. are all important factors that concur to this concept. In this work, we discuss to which extent the existing techniques for 3D similarity matching are able to approach fragment similarity, what is missing and what is necessary to be further developed.