Skin Microstructure Deformation with Displacement Map Convolution (bibtex)
by Koki Nagano, Graham Fyffe, Oleg Alexander, Jernej Barbiç, Hao Li, Abhijeet Ghosh, Paul Debevec
Abstract:
We present a technique for synthesizing the effects of skin microstructure deformation by anisotropically convolving a high-resolution displacement map to match normal distribution changes in measured skin samples. We use a 10-micron resolution scanning technique to measure several in vivo skin samples as they are stretched and compressed in different directions, quantifying how stretching smooths the skin and compression makes it rougher. We tabulate the resulting surface normal distributions, and show that convolving a neutral skin microstructure displacement map with blurring and sharpening filters can mimic normal distribution changes and microstructure deformations. We implement the spatially-varying displacement map filtering on the GPU to interactively render the effects of dynamic microgeometry on animated faces obtained from high-resolution facial scans.
Reference:
Skin Microstructure Deformation with Displacement Map Convolution (Koki Nagano, Graham Fyffe, Oleg Alexander, Jernej Barbiç, Hao Li, Abhijeet Ghosh, Paul Debevec), In ACM Transactions on Graphics, volume 34, 2015.
Bibtex Entry:
@article{nagano_skin_2015,
	title = {Skin {Microstructure} {Deformation} with {Displacement} {Map} {Convolution}},
	volume = {34},
	issn = {07300301},
	url = {http://ict.usc.edu/pubs/Skin%20Microstructure%20Deformation%20with%20Displacement%20Map%20Convolution.pdf},
	doi = {10.1145/2766894},
	abstract = {We present a technique for synthesizing the effects of skin microstructure deformation by anisotropically convolving a high-resolution displacement map to match normal distribution changes in measured skin samples. We use a 10-micron resolution scanning technique to measure several in vivo skin samples as they are stretched and compressed in different directions, quantifying how stretching smooths the skin and compression makes it rougher. We tabulate the resulting surface normal distributions, and show that convolving a neutral skin microstructure displacement map with blurring and sharpening filters can mimic normal distribution changes and microstructure deformations. We implement the spatially-varying displacement map filtering on the GPU to interactively render the effects of dynamic microgeometry on animated faces obtained from high-resolution facial scans.},
	number = {4},
	journal = {ACM Transactions on Graphics},
	author = {Nagano, Koki and Fyffe, Graham and Alexander, Oleg and Barbiç, Jernej and Li, Hao and Ghosh, Abhijeet and Debevec, Paul},
	month = jul,
	year = {2015},
	keywords = {Graphics, UARC},
	pages = {1--10}
}
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