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Stone Weathering in a Photograph
Author(s) -
Xue Su,
Dorsey Julie,
Rushmeier Holly
Publication year - 2011
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/j.1467-8659.2011.01977.x
Subject(s) - silhouette , weathering , computer science , computer graphics (images) , computer graphics , object (grammar) , smoothing , non photorealistic rendering , computer vision , pipeline (software) , variety (cybernetics) , artificial intelligence , geology , animation , computer animation , computer facial animation , geomorphology , programming language
The appearance of weathering effects on stone is important for creating outdoor scenes in computer graphics. To achieve them, previous research has built upon physical simulation, which, while yielding a degree of realism, is computationally expensive and inapplicable to the situation when the object geometry is unknown. Also, physical simulation requires specific knowledge of the stone properties and environmental processes. In this paper, we present a simple visual simulation pipeline for creating weathering effects on stone within a single image. Two primary effects of stone weathering, i.e., smoothing and roughening , are considered. In addition, erosion on the object silhouette is treated. These challenging effects involve significant geometry changes, which are intractable for previous image‐based editing techniques. The effectiveness of our technique is illustrated on a variety of scenes and types of stone. While it can be fully automatic, it also allows easy user interaction.