What is 3-D Modeling

Realization of a model in the virtual 3-D space, made by digital solids and/or surfaces, able to simulate the characteristics of an object. The 3D model can be based or include photographic images, often taken from reality. The final effect of simulation can derive from both 3-D shapes and texture mapping. The 3-D model can be realized from physical objects (according to a “reverse modeling” process) or directly assembling 3-D digital forms. 3-D modeling includes the modeling of the scene, lights, cameras, textures, using both 2-D (for example background images or the so called “impostor billboards”) and 3D elements. The characteristics of the 3-D are related to the ones of the object and to the aims of the representation. A model could present a photorealistic image or both iconic and symbolic representations.

Advanced Digital Processes for the Survey: Analysis and Conservation of Built Heritage

Ilaria Trizio (CNR, Italian National Research Council, Italy), Stefano Brusaporci (University of L'Aquila, Italy), Francesca Savini (Independent Researcher, Italy), Pamela Maiezza (University of L'Aquila, Italy), Alessandra Tata (University of L'Aquila, Italy), and Alessandro Giannangeli (Institute for Construction Technologies, Italian National Research Council, Italy)