Paper Info
Title
Time-varying surface appearance: acquisition, modeling and rendering
Abstract
For computer graphics rendering, we generally assume that the appearance of surfaces remains static over time. Yet, there are a number of natural processes that cause surface appearance to vary dramatically, such as burning of wood, wetting and drying of rock and fabric, decay of fruit skins, and corrosion and rusting of steel and copper. In this paper, we take a significant step towards measuring, modeling, and rendering time-varying surface appearance. We describe the acquisition of the first time-varying database of 26 samples, encompassing a variety of natural processes including burning, drying, decay, and corrosion. Our main technical contribution is a Space-Time Appearance Factorization (STAF). This model factors space and time-varying effects. We derive an overall temporal appearance variation characteristic curve of the specific process, as well as space-dependent textures, rates, and offsets. This overall temporal curve controls different spatial locations evolve at the different rates, causing spatial patterns on the surface over time. We show that the model accurately represents a variety of phenomena. Moreover, it enables a number of novel rendering applications, such as transfer of the time-varying effect to a new static surface, control to accelerate time evolution in certain areas, extrapolation beyond the acquired sequence, and texture synthesis of time-varying appearance.
Year
DOI
Venue
2006
10.1145/1179352.1141952
ACM Trans. Graph.
Keywords
Field
DocType
spatial pattern,texture synthesis,computer graphic,copper,space time
Bidirectional reflectance distribution function,Computer graphics (images),Wetting,Computer science,Time evolution,Extrapolation,Rendering (computer graphics),Spatial ecology,Computer graphics,Texture synthesis
Journal
Volume
Issue
ISSN
25
3
0730-0301
ISBN
Citations 
PageRank 
1-59593-364-6
50
2.08
References 
Authors
15
6
Name
Order
Citations
PageRank
Jinwei Gu168739.49
Chien-I Tu2502.08
Ravi Ramamoorthi34481237.21
Peter N. Belhumeur4122421001.27
Wojciech Matusik54771254.42
Shree K. Nayar6123941538.46