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Displaying 1-28 out of 28 total
Touch-Based Haptics for Interactive Editing on Point Set Surfaces
Found in: IEEE Computer Graphics and Applications
By Xiaohu Guo, Jing Hua, Hong Qin
Issue Date:November 2004
pp. 31-39
A modeling paradigm for haptics-based editing on point set surfaces exploits implicit surfaces, physics-based modeling, point-sampled surfaces, and haptic feedback.
Scalar-Function-Driven Editing on Point Set Surfaces
Found in: IEEE Computer Graphics and Applications
By Xiaohu Guo, Jing Hua, Hong Qin
Issue Date:July 2004
pp. 43-52
This article proposes a new modeling paradigm for local and global editing on point set surfaces. The technique unifies the topological advantage of implicitly defined surfaces, the strength of physics-based modeling techniques, and the simplicity of point...
Boundary-Aware Multidomain Subspace Deformation
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yin Yang, Weiwei Xu, Xiaohu Guo, Kun Zhou, Baining Guo
Issue Date:October 2013
pp. 1633-1645
In this paper, we propose a novel framework for multidomain subspace deformation using node-wise corotational elasticity. With the proper construction of subspaces based on the knowledge of the boundary deformation, we can use the Lagrange multiplier techn...
Physics-Based Deformable Tongue Visualization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yin Yang, Xiaohu Guo,J. Vick,L. G. Torres,T. F. Campbell
Issue Date:May 2013
pp. 811-823
In this paper, a physics-based framework is presented to visualize the human tongue deformation. The tongue is modeled with the Finite Element Method (FEM) and driven by the motion capture data gathered during speech production. Several novel deformation v...
Point-Based Manifold Harmonics
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yang Liu,Balakrishnan Prabhakaran,Xiaohu Guo
Issue Date:October 2012
pp. 1693-1703
This paper proposes an algorithm to build a set of orthogonal Point-Based Manifold Harmonic Bases (PB-MHB) for spectral analysis over point-sampled manifold surfaces. To ensure that PB-MHB are orthogonal to each other, it is necessary to have symmetrizable...
Physics-based multi-domain subspace deformation with component mode synthesis
Found in: Virtual Reality Conference, IEEE
By Yin Yang,Xiaohu Guo
Issue Date:March 2012
pp. 69-70
Fast and accurate simulation of 3D soft objects is important to virtual environment and reality. Simulating 3D deformation of large model in real-time is a challenging problem as it is very computation-demanding involving intensive matrix-based operation o...
PicoLife: A Computer Vision-based Gesture Recognition and 3D Gaming System for Android Mobile Devices
Found in: Multimedia, International Symposium on
By Mahesh Babu Mariappan,Xiaohu Guo,Balakrishnan Prabhakaran
Issue Date:December 2011
pp. 19-26
Pico Life is envisioned to be an augmented reality game in which 3D characters will be controlled by hand gestures on Android smart phones. Pico Life is currently powered by two mobile optimized engines: (1) The computer vision engine that runs our advance...
Generalized Voronoi Diagram Computation on GPU
Found in: International Symposium on Voronoi Diagrams in Science and Engineering
By Zhan Yuan, Guodong Rong, Xiaohu Guo, Wenping Wang
Issue Date:June 2011
pp. 75-82
We study the problem of using the GPU to compute the generalized Voronoi diagram (GVD) for higher-order sites, such as line segments and curves. This problem has applications in many fields, including computer animation, pattern recognition and so on. A nu...
Real-Time GPU-Aided Lung Tumor Tracking
Found in: Image and Video Technology, Pacific-Rim Symposium on
By Yin Yang, Zichun Zhong, Guodong Rong, Xiaohu Guo, Jing Wang, Timothy Solberg, Weihua Mao
Issue Date:November 2010
pp. 495-500
A real time solution of tracking daily lung tumor motion is proposed in this paper in order to achieve an accurate dose delivery for radiation therapy as recently developed cone-beam computed tomography (CBCT) technique is not able to catch tumor motions d...
GPU-Assisted Computation of Centroidal Voronoi Tessellation
Found in: IEEE Transactions on Visualization and Computer Graphics
By Guodong Rong, Yang Liu, Wenping Wang, Xiaotian Yin, Xianfeng David Gu, Xiaohu Guo
Issue Date:March 2011
pp. 345-356
Centroidal Voronoi tessellations (CVT) are widely used in computational science and engineering. The most commonly used method is Lloyd's method, and recently the L-BFGS method is shown to be faster than Lloyd's method for computing the CVT. However, these...
Streaming 3D shape deformations in collaborative virtual environment
Found in: Virtual Reality Conference, IEEE
By Ziying Tang, Guodong Rong, Xiaohu Guo,B Prabhakaran
Issue Date:March 2010
pp. 183-186
Collaborative virtual environment has been limited on static or rigid 3D models, due to the difficulties of real-time streaming of large amounts of data that is required to describe motions of 3D deformable models. Streaming shape deformations of complex 3...
A Comprehensive Approach for Streaming 3D Progressive Meshes
Found in: Multimedia, International Symposium on
By Ziying Tang, Xiaohu Guo, B. Prabhakaran
Issue Date:December 2009
pp. 263-268
Fast and efficient streaming of detailed 3D model over lossy network has long been a challenge, al-though progressive compression techniques were pro-posed long time ago. One reason is that packet loss occurring in unreliable networks is highly unpredictab...
Globally Optimal Surface Mapping for Surfaces with Arbitrary Topology
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xin Li, Yunfan Bao, Xiaohu Guo, Miao Jin, Xianfeng Gu, Hong Qin
Issue Date:July 2008
pp. 805-819
Computing smooth and optimal one-to-one maps between surfaces of same topology is a fundamental problem in computer graphics and such a method provides us a ubiquitous tool for geometric modeling and data visualization. Its vast variety of applications inc...
Shape and Appearance Repair for Incomplete Point Surfaces
Found in: Computer Vision, IEEE International Conference on
By Seyoun Park, Xiaohu Guo, Hayong Shin, Hong Qin
Issue Date:October 2005
pp. 1260-1267
This paper presents a new surface content completion framework that can restore both shape and appearance from scanned, incomplete point set inputs. First, the geometric holes can be robustly identified from noisy and defective data sets without the need o...
Point Set Surface Editing Techniques Based on Level-Sets
Found in: Computer Graphics International Conference
By Xiaohu Guo, Jing Hua, Hong Qin
Issue Date:June 2004
pp. 52-59
In this paper we articulate a new modeling paradigm for both local and global editing on complicated point set surfaces of arbitrary topology. In essence, the proposed technique leads to a novel point-set methodology that can unify the topological advantag...
Dynamic Sculpting and Deformation of Point Set Surfaces
Found in: Computer Graphics and Applications, Pacific Conference on
By Xiaohu Guo, Hong Qin
Issue Date:October 2003
pp. 123
This paper presents a novel paradigm for point set surface editing, which takes advantages of the potential of implicit surfaces, the strength of physics based modeling techniques, and the simplicity of point sampled surfaces. Our point set surface is eval...
Distributed Haptic Interactions with Physically Based 3D Deformable Models over Lossy Networks
Found in: IEEE Transactions on Haptics
By Ziying Tang, Yin Yang, Xiaohu Guo,Balakrishnan Prabhakaran
Issue Date:October 2013
pp. 417-428
Researchers have faced great challenges when simulating complicated 3D volumetric deformable models in haptics-enabled collaborative/cooperative virtual environments (HCVEs) due to the expensive simulation cost, heavy communication load, and unstable netwo...
Meshless thin-shell simulation based on global conformal parameterization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xiaohu Guo, Xin Li, Yunfan Bao, Xianfeng Gu, Hong Qin
Issue Date:May 2006
pp. 375-385
This paper presents a new approach to the physically-based thin-shell simulation of point-sampled geometry via explicit, global conformal point-surface parameterization and meshless dynamics. The point-based global parameterization is founded upon the rigo...
A 3D tele-immersion streaming approach using skeleton-based prediction
Found in: Proceedings of the 21st ACM international conference on Multimedia (MM '13)
By Balakrishnan Prabhakaran, Karthik Venkatraman, Xiaohu Guo, Suraj Raghuraman, Zhanyu Wang
Issue Date:October 2013
pp. 721-724
3D collaborative Tele-Immersive environments allow reconstruction of real world 3D scenes in the virtual world across multiple physical locations. This kind of reconstruction results in a lot of 3D data being transmitted over the internet in real time. The...
A multigrid approach for bandwidth and display resolution aware streaming of 3D deformations
Found in: Proceedings of the 21st ACM international conference on Multimedia (MM '13)
By Yin Yang, Balakrishnan Prabhakaran, Xiaohu Guo, Yuan Tian
Issue Date:October 2013
pp. 693-696
In this paper, we propose a novel multimedia system adaptively streaming the animation according to display resolution and/or network bandwidth. A Multigrid-like technique is used in this framework to accelerate the converging rate of the optimization of t...
Particle-based anisotropic surface meshing
Found in: ACM Transactions on Graphics (TOG)
By Bruno Lévy, Feng Sun, Weihua Mao, Wenping Wang, Xiaohu Guo, Yang Liu, Zichun Zhong
Issue Date:July 2013
pp. 1-14
This paper introduces a particle-based approach for anisotropic surface meshing. Given an input polygonal mesh endowed with a Riemannian metric and a specified number of vertices, the method generates a metric-adapted mesh. The main idea consists of mappin...
Tongue visualization for specified speech task
Found in: ACM SIGGRAPH 2012 Posters (SIGGRAPH '12)
By Xiaohu Guo, Yin Yang
Issue Date:August 2012
pp. 1-1
Tongue is a muscular organ which is particularly important for phonetic articulation during speech task. In many real cases, a visualized movement of the tongue could be of help, for example in the rehabilitation of speech disorders. The challenge lies in ...
Real-time 3D interaction with deformable model on mobile devices
Found in: Proceedings of the 19th ACM international conference on Multimedia (MM '11)
By Orkun Ozbek, Xiaohu Guo, Ziying Tang
Issue Date:November 2011
pp. 1009-1012
Mobile-based augmented reality is an emerging technology that provides immersive experiences over wireless networks. Its applications, such as 3D streaming, have become more and more popular on mobile devices. However, most of these applications do not sup...
A multimodal virtual environment for interacting with 3d deformable models
Found in: Proceedings of the international conference on Multimedia (MM '10)
By Anant Patel, Balakrishnan Prabhakaran, Xiaohu Guo, Ziying Tang
Issue Date:October 2010
pp. 1303-1306
In this video presentation, we introduce an immersive multimodal virtual environment which supports real-time interactions with 3D deformable model through a haptic device. We include a system called "FakeSpace" to imitate 3D environment, and a PHAMTOM dev...
Hyperbolic centroidal Voronoi tessellation
Found in: Proceedings of the 14th ACM Symposium on Solid and Physical Modeling (SPM '10)
By Guodong Rong, Miao Jin, Xiaohu Guo
Issue Date:September 2010
pp. 117-126
The centroidal Voronoi tessellation (CVT) has found versatile applications in geometric modeling, computer graphics, and visualization. In this paper, we extend the concept of the CVT from Euclidean space to hyperbolic space. A novel hyperbolic CVT energy ...
Spectral simulation of hybrid bodies with deformable and rigid materials
Found in: Proceedings of the 2010 ACM SIGGRAPH symposium on Interactive 3D Graphics and Games (I3D '10)
By Guodong Rong, Luis Torres, Xiaohu Guo, Yin Yang
Issue Date:February 2010
pp. 1-1
We presents a spectral approach to simulate hybrid objects with deformable and rigid materials in real time. This framework is able to handle large-scale model under the help of GPU's parallel computation.
A robust spectral approach for blind watermarking of manifold surfaces
Found in: Proceedings of the 10th ACM workshop on Multimedia and security (MM&Sec '08)
By Balakrishnan Prabhakaran, Xiaohu Guo, Yang Liu
Issue Date:September 2008
pp. 1-20
This paper proposes a robust, blind, and imperceptible spectral watermarking approach for manifold surfaces represented as triangle meshes. The basic idea is to transform the original mesh into frequency domain using the Fourier-Like Manifold Harmonics Tra...
Harmonic volumetric mapping for solid modeling applications
Found in: Proceedings of the 2007 ACM symposium on Solid and physical modeling (SPM '07)
By Hong Qin, Hongyu Wang, Xianfeng Gu, Xiaohu Guo, Xin Li, Ying He
Issue Date:June 2007
pp. 109-120
Harmonic volumetric mapping for two solid objects establishes a one-to-one smooth correspondence between them. It finds its applications in shape registration and analysis, shape retrieval, information reuse, and material/texture transplant. In sharp contr...