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Proceedings of CAD'14, 2014, 82-84
Geometric Definition of the Hidden Part of a Line Drawing in a Sketch-to-Solid Methodology

Sofia Kyratzi, Philip Azariadis, University of the Aegean

Abstract. A sketch is considered a primary tool for the communication of ideas especially in the conceptual phase of design. The growing evolution and the consistent efforts to properly found the new arising Computer Aided Sketching (CAS) systems establish the importance of 2D sketches in design oriented disciplines. The ability of humans to realize the 3D shape of a sketched object, even if the latter appears ambiguous or contains geometric errors motivate the researchers of multiple fields, such as Computer Aided Design and Sketching, Geometric Modeling, and Artificial Intelligence, to search for efficient methods for the reconstruction of a 3D model from a given single sketch. In a computer-based design environment, a sketch is encountered as an arrangement of 2D lines, intersecting in junctions that lack of depth information. In its simplest form, a sketch is considered as line drawing. There are two types of sketches; natural and wireframe sketches. Natural sketches include only visible lines, while wireframe sketches include both visible and hidden lines. Proposed 3D reconstruction methods differentiate on the basis of the initial given type of sketch.

Keywords. Computer aided sketching, sketch-to-solid, wireframe sketch

DOI: 10.14733/cadconfP.2014.82-84