Abstract
This paper focuses on a new method to visualize weathering effects due to the physical changes of stone artifacts. Major parameters concerned with both the breakdown process and changes of properties of the particles that comprise the stone artifact are considered. We pay attention to the fact that the common and main cause of weathering is granular disintegration and that such disintegration depends on the porosity, that is to say the percentage of voids. We define an estimation function in time for transient behaviors of the physical properties of stone, the material for sculpture. In order to visualize the erosion of a stone sample, voxel-based representation has a decided advantage. Accordingly, a representation of a sculpture with surface modeling using polygons and mesh is converted to a voxel-based representation. The voxels are treated as particles of a sculpture; we observe the transient changes of the physical properties for each voxel. To ensure natural conditions, initial states of the particles are defined using a probability distribution function. It was possible to realize a natural expression of the aging effects of stone by applying weighting factors depending on how voxels are exposed to the surrounding environment. In addition, for computational efficiency, instead of including all voxels when calculating property changes, only the surface voxels of the sculpture are calculated for transient changes.
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This research is supported by National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology through the Basic Science Research Program (201204400001).
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Lee, S., Kim, JW. & Ahn, E. A visual simulation method for weathering progress of stone artifacts. Multimed Tools Appl 75, 15247–15259 (2016). https://doi.org/10.1007/s11042-015-2507-7
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DOI: https://doi.org/10.1007/s11042-015-2507-7