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Displaying 1-7 out of 7 total
Separating Reflections in Human Iris Images for Illumination Estimation
Found in: Computer Vision, IEEE International Conference on
By Huiqiong Wang, Stephen Lin, Xiaopei Liu, Sing Bing Kang
Issue Date:October 2005
pp. 1691-1698
A method is presented for separating corneal reflections in an image of human irises to estimate illumination from the surrounding scene. Previous techniques for reflection separation have demonstrated success in only limited cases, such as for uniform col...
 
Statistical Invariance for Texture Synthesis
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xiaopei Liu, Lei Jiang, Tien-Tsin Wong, Chi-Wing Fu
Issue Date:November 2012
pp. 1836-1848
Estimating illumination and deformation fields on textures is essential for both analysis and application purposes. Traditional methods for such estimation usually require complicated and sometimes labor-intensive processing. In this paper, we propose a ne...
 
Evolving Mazes from Images
Found in: IEEE Transactions on Visualization and Computer Graphics
By Liang Wan, Xiaopei Liu, Tien-Tsin Wong, Chi-Sing Leung
Publication Date: July 2009
pp. 287-297
We propose a novel reaction diffusion (RD) simulator to evolve image-resembling mazes. The evolved mazes faithfully preserve the salient interior structures in the source images. Since it is difficult to control the generation of desired patterns with trad...
 
2.5D Cartoon Hair Modeling and Manipulation
Found in: IEEE Transactions on Visualization and Computer Graphics
By Chih-Kuo Yeh,Pradeep Kumar Jayaraman,Xiaopei Liu,Chi-Wing Fu,Tong-Yee Lee
Issue Date:February 2015
pp. 1
This paper addresses a challenging single-view modeling and animation problem with cartoon images. Our goal is to model the hairs in a given cartoon image with consistent layering and occlusion, so that we can produce various visual effects from just a sin...
 
Turbulence Simulation by Adaptive Multi-Relaxation Lattice Boltzmann Modeling
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xiaopei Liu, Wai-Man Pang, Jing Qin, Chi-Wing Fu
Issue Date:February 2014
pp. 289-302
This paper presents a novel approach to simulating turbulent flows by developing an adaptive multirelaxation scheme in the framework of lattice Boltzmann equation (LBE). Existing LBE methods in graphics simulations are usually insufficient for turbulent fl...
 
Intrinsic colorization
Found in: ACM Transactions on Graphics (TOG)
By Chi-Sing Leung, Liang Wan, Pheng-Ann Heng, Stephen Lin, Tien-Tsin Wong, Xiaopei Liu, Yingge Qu
Issue Date:December 2008
pp. 1-49
In this paper, we present an example-based colorization technique robust to illumination differences between grayscale target and color reference images. To achieve this goal, our method performs color transfer in an illumination-independent domain that is...
     
Animating animal motion from still
Found in: ACM Transactions on Graphics (TOG)
By Chi-Sing Leung, Liang Wan, Liansheng Wang, Tien-Tsin Wong, Xiaopei Liu, Xuemiao Xu
Issue Date:December 2008
pp. 1-49
Even though the temporal information is lost, a still picture of moving animals hints at their motion. In this paper, we infer motion cycle of animals from the "motion snapshots" (snapshots of different individuals) captured in a still picture. By finding ...
     
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