Geometry-driven photorealistic facial expression synthesis (2009)
Qingshan Zhang, Zicheng Liu, Senior Member, Baining Guo, Senior Member, Demetri Terzopoulos, ...
Abstract—Expression mapping (also called performance driven animation) has been a popular method for generating facial animations. A shortcoming of this method is that it does not generate...
Highly Parallel Surface Reconstruction (2009)
Kun Zhou, Minmin Gong, Xin Huang, Baining Guo
We present a parallel surface reconstruction algorithm that runs entirely on the GPU. Like existing implicit surface reconstruction methods, our algorithm first builds an octree for the given set of...
Lvdi Wang, Xi Wang, Peter-pike Sloan, Li-yi Wei, Xin Tong, Baining Guo
High dynamic range (HDR) images are increasingly employed in games and interactive applications for accurate rendering and illumination. One disadvantage of HDR images is their large data size;...
Abstract Mesh Puppetry: Cascading Optimization of Mesh Deformation with Inverse Kinematics (2009)
Xiaohan Shi, Kun Zhou, Yiying Tong, Mathieu Desbrun, Hujun Bao, Baining Guo
We present mesh puppetry, a variational framework for detailpreserving mesh manipulation through a set of high-level, intuitive, and interactive design tools. Our approach builds upon traditional...
Tomas Akenine-möller, Wolfgang Heidrich (editors, Hongzhi Wu, Li-yi Wei, Xi Wang, Baining Guo
Using coarse meshes with textures and/or normal maps to represent detailed meshes often results in poor visual quality along silhouettes. To tackle this problem, we introduce silhouette texture, a...
Abstract Direct Manipulation of Subdivision Surfaces on GPUs (2008)
Kun Zhou, Xin Huang, Weiwei Xu, Baining Guo, Heung-yeung Shum
We present an algorithm for interactive deformation of subdivision surfaces, including displaced subdivision surfaces and subdivision surfaces with geometric textures. Our system lets the user...
Abstract TextureMontage: Seamless Texturing of Arbitrary Surfaces From Multiple Images (2008)
Kun Zhou, Xi Wang, Yiying Tong, Mathieu Desbrun, Baining Guo, Heung-yeung Shum
We propose a technique, called TextureMontage, to seamlessly map a patchwork of texture images onto an arbitrary 3D model. A texture atlas can be created through the specification of a set of...
Eurographics Symposium on Rendering (2005) (2008)
Kavita Bala, Philip Dutré (editors, Multiresolution Reflectance Filtering, Ping Tan, Stephen Lin, Long Quan, ...
Physically-based reflectance models typically represent light scattering as a function of surface geometry at the pixel level. With changes in viewing resolution, the geometry imaged within a pixel...
Abstract Direct Manipulation of Subdivision Surfaces on GPUs (2008)
Kun Zhou, Xin Huang, Weiwei Xu, Baining Guo, Heung-yeung Shum
We present an algorithm for interactive deformation of subdivision surfaces, including displaced subdivision surfaces and subdivision surfaces with geometric textures. Our system lets the user...
General Terms: Algorithms (2008)
Lin Liang, Ce Liu, Ying-qing Xu, Baining Guo
We present an algorithm for synthesizing textures from an input sample. This patch-based sampling algorithm is fast and it makes high-quality texture synthesis a real-time process. For generating...
Jianye Lu, Athinodoros S. Georghiades, Andreas Glaser, Hongzhi Wu, Li-yi Wei, Baining Guo, ...
Interesting textures form on the surfaces of objects as the result of external chemical, mechanical, and biological agents. Simulating these textures is necessary to generate models for realistic...
2D Shape Deformation Using Nonlinear Least Squares Optimization (2008)
Yanlin Weng, Weiwei Xu, Yanchen Wu, Kun Zhou, Baining Guo
Abstract This paper presents a novel 2D shape deformation algorithm based on nonlinear least squares optimization. The algorithm aims to preserve two local shape properties: Laplacian coordinates of...
Geometrically-Based Potential Energy for Simulating Deformable Objects (2008)
Jin Huang, Xiaohan Shi, Xinguo Liu, Kun Zhou, Baining Guo, Hujun Bao
Abstract This paper presents a fast and stable technique for simulating deformable objects. Unlike in previous physically-based methods, our potential energy of deformation is purely...
The Visual Computer manuscript No. (will be inserted by the editor) (2008)
Ying Song, Yanyun Chen, Xin Tong, Stephen Lin, Jiaoying Shi, Baining Guo, ...
Abstract The appearance of an inhomogeneous translucent material depends substantially on its volumetric variations and their effects upon subsurface scattering. For efficient rendering that accounts...
The Visual Computer manuscript No. (will be inserted by the editor) (2008)
Jiaping Wang, Kun Xu, Kun Zhou, Stephen Lin, Shimin Hu, Baining Guo
Abstract In this paper, we present a new SH operation, called spherical harmonics scaling, to shrink or expand a spherical function in frequency domain. We show that this problem can be elegantly...
Abstract Precomputed Shadow Fields for Dynamic Scenes (2008)
Kun Zhou, Yaohua Hu, Stephen Lin, Baining Guo, Heung-yeung Shum
We present a soft shadow technique for dynamic scenes with moving objects under the combined illumination of moving local light sources and dynamic environment maps. The main idea of our technique is...
High Dynamic Range Image Hallucination (2008)
Jan Kautz, Sumanta Pattanaik (editors, Lvdi Wang, Li-yi Wei, Kun Zhou, Baining Guo
We introduce high dynamic range image hallucination for adding high dynamic range details to the over-exposed and under-exposed regions of a low dynamic range image. Our method is based on a simple...
Abstract TextureMontage: Seamless Texturing of Arbitrary Surfaces From Multiple Images (2008)
Kun Zhou, Xi Wang, Yiying Tong, Mathieu Desbrun, Baining Guo, Heung-yeung Shum
We propose a technique, called TextureMontage, to seamlessly map a patchwork of texture images onto an arbitrary 3D model. A texture atlas can be created through the specification of a set of...
Iso-charts: Stretch-driven Mesh Parameterization using Spectral Analysis (2008)
R. Scopigno, D. Zorin, Kun Zhou, John Snyder, Baining Guo
We describe a fully automatic method, called iso-charts, to create texture atlases on arbitrary meshes. It is the first to consider stretch not only when parameterizing charts, but also when forming...
Abstract Subspace Gradient Domain Mesh Deformation (2008)
Jin Huang, Xiaohan Shi, Xinguo Liu, Kun Zhou, Li-yi Wei, Shang-hua Teng, ...
In this paper we present a general framework for performing constrained mesh deformation tasks with gradient domain techniques. We present a gradient domain technique that works well with a wide...
Interactive Modeling of Tree Bark from a Single Image (2008)
Xi Wang, Lifeng Wang, Ligang Liu, Shimin Hu, Baining Guo
There exist many computer graphics techniques which could achieve high quality tree generation. However, only a few works focus on realistic modeling of tree bark. Difficulties lie in the complex...
Capturing and rendering geometry details for BTFmapped surfaces (2008)
Jiaping Wang, Jiaping Wang, Xin Tong, Xin Tong, Yanyun Chen, Yanyun Chen, ...
Abstract Bidirectional texture functions or BTFs accurately model reflectance variation at a fine (meso-) scale as a function of lighting and viewing direction. BTFs also capture view-dependent...
The Visual Computer manuscript No. (will be inserted by the editor) (2008)
Rui Wang, Kun Zhou, John Snyder, Xinguo Liu, Hujun Bao, Qunsheng Peng, ...
Abstract We approximate a solid object represented as a triangle mesh by a bounding set of spheres having minimal summed volume outside the object. We show how outside volume for a single sphere can...
Gradient Domain Editing of Deforming Mesh Sequences (2008)
Weiwei Xu, Kun Zhou, Yizhou Yu, Qifeng Tan, Qunsheng Peng, Baining Guo
Figure 1: A straight run is adapted to a curved path on an uneven terrain. The original deforming mesh sequence moves along a straight line on a plane. We first make the HORSE move along a curve...
Interactive Relighting with Dynamic BRDFs (2008)
Xin Sun, Kun Zhou, Yanyun Chen, Stephen Lin, Jiaoying Shi, Baining Guo
Figure 1: Image sequence of Venus rendered with a dynamic BRDF. Ground truth renderings of the corresponding materials are shown on spheres at the bottom-right of the images. The changes in Venus ’...
Eurographics Symposium on Rendering (2005) (2008)
Kavita Bala, Philip Dutré (editors, Multiresolution Reflectance Filtering, Ping Tan, Stephen Lin, Long Quan, ...
Physically-based reflectance models typically represent light scattering as a function of surface geometry at the pixel level. With changes in viewing resolution, the geometry imaged within a pixel...
Lifeng Wang, Stephen Lin, Seungyong Lee, Baining Guo, Heung-yeung Shum, Senior Member
Abstract — We present a 2D feature-based technique for morphing 3D objects represented by light fields. Existing light field morphing methods require the user to specify corresponding 3D feature...
B.: Fast example-based surface texture synthesis via discrete optimization (2008)
Kun Zhou, Li-yi Wei, Minmin Gong, Xinming Zhang, Baining Guo, Jianwei Han, ...
Abstract We synthesize and animate general texture patterns over arbitrary 3D mesh surfaces. The animation is controlled by flow fields over the target mesh, and the texture can be arbitrary user...
Web Graphics Tutorial Emerging Web Graphics Standards and Technologies (2008)
Tosiyasu L. Kunii, Baining Guo, Bo Zhang
Migrating graphics applications and techniques to the Web introduces technological challenges not present in traditional graphics. The shortage of library tools to support Web graphics application...
Qingshan Zhang, Zicheng Liu, Baining Guo, Harry Shum
Expression mapping (also called performance driven animation) has been a popular method to generate facial animations. One shortcoming of this method is that it does not generate expression details...
E-Partner: A Photo-Realistic Conversation Agent (2008)
Bo Zhang Changbo, Bo Zhang, Changbo Hu, Qingsheng Cai, Baining Guo, Harry Shum
An E-Partner is a photo-realistic conversation agent, which has a talking head that not only look photo-realistic but also can have a conversation with the user about a given topic. The conversation...
Visual Comput (2006) 22: 612–621 DOI 10.1007/s00371-006-0052-0 ORIGINAL ARTICLE (2006)
Rui Wang, Kun Zhou, John Snyder, Xinguo Liu, Hujun Bao, Qunsheng Peng, ...
Object approximation using sets of simple primitives plays an important role in many time-critical applications in computer graphics, such as collision, hit, and proximity detection, view-frustum and...
Realtime soft shadows in dynamic scenes using spherical harmonic exponentiation (2006)
Zhong Ren, Rui Wang, John Snyder, Kun Zhou, Xinguo Liu, Bo Sun, ...
Previous methods for soft shadows numerically integrate over many light directions at each receiver point, testing blocker visibility in each direction. We introduce a method for real-time soft...
Graduated School of Chinese Academy of (2005)
Jiaping Wang, Xin Tong, John Snyder, Yanyun Chen, Baining Guo, Heung-yeung Shum, ...
∗ This work was done while J. Wang was visiting Microsoft Research Asia. 1
Modeling and rendering of quasi-homogeneous materials (2005)
Xin Tong, Jiaping Wang, Stephen Lin, Baining Guo, Heung-yeung Shum
Many translucent materials consist of evenly-distributed heterogeneous elements which produce a complex appearance under different lighting and viewing directions. For these quasi-homogeneous...
Decorating surfaces with bidirectional texture functions (2005)
Kun Zhou, Peng Du, Lifeng Wang, Yasuyuki Matsushita, Jiaoying Shi, Baining Guo, ...
Abstract — We present a system for decorating arbitrary surfaces with bidirectional texture functions (BTF). Our system generates BTFs in two steps. First, we automatically synthesize a BTF over...
Synthesis and Rendering of Bidirectional Texture Functions on Arbitrary Surfaces (2004)
Xinguo Liu, Yaohua Hu, Jingdan Zhang, Xin Tong, Baining Guo, Heung-yeung Shum, ...
Abstract—The bidirectional texture function (BTF) is a 6D function that describes the appearance of a real-world surface as a function of lighting and viewing directions. The BTF can model the...
Mesh editing with poisson-based gradient field manipulation (2004)
Yizhou Yu, Kun Zhou, Dong Xu, Xiaohan Shi, Hujun Bao, Baining Guo, ...
H.: Realistic, real-time rendering of ocean waves (2004)
Yaohua Hu, Luiz Velho, Xin Tong, Baining Guo, Harry Shum
In computer games and other real-time graphics applications, the ocean surface is typically modeled as a texture or bump-mapped plane with simple lighting effects. This paper describes a system for...
Geometry-driven photorealistic facial expression synthesis (2003)
Qingshan Zhang, Zicheng Liu, Baining Guo, Demetri Terzopoulos, Heung-yeung Shum, Senior Member, ...
Abstract—Expression mapping (also called performance driven animation) has been a popular method for generating facial animations. A shortcoming of this method is that it does not generate...
Realistic rendering and animation of knitwear (2003)
Yanyun Chen, Stephen Lin, Hua Zhong, Ying-qing Xu, Baining Guo, Heung-yeung Shum
We present a framework for knitwear modeling and rendering that accounts for characteristics that are particular to knitted fabrics. We first describe a model for animation that considers knitwear...
DIRECTIONAL COHERENCE INTERPOLATION FOR THREE-DIMENSIONAL GRAY-LEVEL IMAGES (2003)
Yongmei Michelle Wang, Jingdan Zhang, Zhunping Zhang, Baining Guo
A novel three-dimensional gray-level interpolation method called the Directional Coherence Interpolation (DCI) is presented in the paper. The principal advantage of the proposed approach is that it...
Modeling and rendering of realistic feathers (2002)
Yanyun Chen, Yingqing Xu, Baining Guo, Heung-yeung Shum
We present techniques for realistic modeling and rendering of feathers and birds. Our approach is motivated by the observation that a feather is a branching structure that can be described by an...
Texture Mapping with a Jacobian-Based Spatially-Variant Filter (2002)
Ke Deng, Jingdan Zhang, Lifeng Wang, Baining Guo
In this paper, we describe a new method to map a texture on a surface with a spatially-variant filter. Our filter takes into consideration the effects of anisotropy using a Jacobian approximation...
Synthesis of bidirectional texture functions on arbitrary surfaces (2002)
Xin Tong, Jingdan Zhangþ, Ligang Liu, Xi Wangþ, Baining Guo, Heung-yeung Shum
The bidirectional texture function (BTF) is a 6D function that can describe textures arising from both spatially-variant surface reflectance and surface mesostructures. In this paper, we present an...
Asymptotically admissible texture synthesis (2001)
Yingqing Xu, Song-chun Zhu, Baining Guo, Heung-yeung Shum
Recently there is a resurgent interest in example based texture analysis and synthesis in both computer vision and computer graphics. While study in computer vision is concerned with learning...
Real-time texture synthesis by patch-based sampling (2001)
Lin Liang, Ce Liu, Yingqing Xu, Baining Guo, Heung-yeung Shum
We present a patch-based sampling algorithm for synthesizing textures from an input sample texture. The patch-based sampling algorithm is fast. Using patches of the sample texture as building blocks...
3D image interpolation based on directional coherence (2001)
Yongmei Wang, Zhunping Zhang, Baining Guo
Image interpolation is of great importance in biomedical visualization and analysis. In this paper, we present a novel gray-level interpolation method called Directional Coherence Interpolation...
Feature-oriented Rate Shaping of Pre-compressed Image/Video (1997)
Wenjun Zeng, Baining Guo, Bede Liu
Rate shaping plays an important role in transmitting compressed video on a network with dynamic bandwidth. In this paper, we present a scheme for rate shaping JPEG/MPEG-precompressed image /video...
A framework for sculptured solids in exact csg representation (1996)
(A draft of this paper should be available from Menon by December 1995.) Over the past few years of research on exact representations of sculptured solids in dual [Brep, CSG] representation schemes...
Jingdan Zhang, Yongmei Wang, Baining Guo
A multiresolution technique for biomedical image interpolation is presented in this paper. It is an extension of the work on Directional Coherence Interpolation (DCI) [15] – a novel gray-level...
Jingdan Zhang, Yongmei Wang, Baining Guo
A multiresolution technique for biomedical image interpolation is presented in this paper. It is an extension of the work on Directional Coherence Interpolation (DCI) [15] – a novel gray-level...
Modeling Arbitrary Smooth Objects with Algebraic Surfaces (1991)
Representing, manipulating, and reasoning about physical objects is a central area of research in a wide range of applications, including solid modeling, computeraided design, computer graphics, and...
Modeling Arbitrary Smooth Objects with Algebraic Surfaces (1991)
Representing, manipulating, and reasoning about physical objects is a central area of research in a wide range of applications, including solid modeling, computeraided design, computer graphics, and...