A Novel Texture Synthesis Based Algorithm for Object Removal in Photographs (2008)
Feng Tang, Yiting Ying, Jin Wang, Qunsheng Peng
Abstract. Natural images and photographs sometimes may contain stains or undesired objects covering significant portions of the images. Inpainting is a method to fill in such portions using the...
Appearance and Geometry Completion with Constrained Texture Synthesis (2008)
Chunxia Xiao, Wenting Zheng, Yongwei Miao, Yong Zhao, Qunsheng Peng
Abstract. A novel approach for appearance and geometry completion over point-sampled geometry is presented in this paper. we define a global texture energy function on the point set surface for...
Yi Gong, Yubo Zhang, Wei Chen, Qunsheng Peng
We present a new real-time shadow rendering approach whose kernel is a hierarchical disk-based approximation to the scene geometry. We show that this approximated representation greatly accelerates...
A New Approach for Examining the Similarity of Protein 3D Shape (2008)
Min Hu, Wei Chen, Tao Zhang, Qunsheng Peng, Liguang Xie
A novel technique for estimating the potential similarity of protein 3D shape is proposed. It is found that the structures of proteins are of self-similarity, such a phenomenon can be well described...
Anti-Aliasing of Reflection Effects of Water Surface (2008)
Xueying Qin, Eihachiro Nakamae, Wei Hua, Yasuo Nagai, Qunsheng Peng
Water surface is one of the most important components for rendering landscapes. The rendered spacious water surface with periodic wavelets such as on the lakes and reservoirs is very easy to make...
Noise Removal Algorithm for Polygonal Meshes ∗ (2008)
Liu Xinguo, Hujun Bao, Qunsheng Peng
Abstract In this paper, we present an effective unshrinkage noise removal algorithm to generate smooth geometric models. By introducing the constraints of keeping all triangle barycenters invariant...
Precomputed Radiance Transfer Field for Rendering Interreflections in Dynamic Scenes (2008)
Minghao Pan, Rui Wang, Xinguo Liu, Qunsheng Peng, Hujun Bao
In this paper, we introduce a new representation – radiance transfer fields (RTF) – for rendering interreflections in dynamic scenes under low frequency illumination. The RTF describes the...
FAST NON-LOCAL ALGORITHM FOR IMAGE DENOISING (2008)
Jin Wang, Yanwen Guo, Yiting Ying, Yanli Liu, Qunsheng Peng
For the non-local denoising approach presented by Buades et al., remarkable denoising results are obtained at high expense of computational cost. In this paper, a new algorithm that reduces the...
Jiang Li, Heung-yeung Shum, Qunsheng Peng
Traditional ray tracing methods are based on Newton’s classical mechanics. They cannot reproduce the visual phenomena of high-speed motion. In this paper, we develop an improved spacetime ray...
Abstract Realistic synthesis of cao shu of Chinese calligraphy (2008)
In Chinese calligraphy cao shu is regarded as a kind of free form art which differs from other styles greatly in its less constrained strokes and brush textures. In this paper we present a framework...
Constrained fairing for meshes (2008)
Xinguo Liu, Hujun Bao, Phengann Heng, Tientsin Wong, Qunsheng Peng
In this paper, we present a novel fairing algorithm for the removal of noise from uniform triangular meshes without shrinkage and serious distortion. The key feature of this algorithm is to keep all...
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...
Yun Zeng, Yi Gong, Wei Chen, Long Zhang, Yun Zeng, Qunsheng Peng, ...
Research Interests My research interests span the fields of computer vision and computer graphics, and I would also like to do some mathematics in the fields of computational theory and optimization....
Multiresolution free-form deformation with subdivision surface of arbitrary topology (2008)
Jieqing Feng, Jin Shao, Xiaogang Jin, Qunsheng Peng, A. Robin Forrest
A new free-from deformation method is presented in this paper. Object deformation is controlled by a mesh of arbitrary topology, namely a control mesh. The subdivision surface determined by the...
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...
An Approximate Image-Space Approach for Real-time Rendering of Deformable Translucent Objects (2008)
Yi Gong, Wei Chen, Long Zhang, Yun Zeng, Qunsheng Peng
Planck (50801 triangles, 25445 vertices, 25fps) data sets with 512¢512 image resolutions. Although lots of works have been engaged in interactive and realistic rendering of translucent materials,...
Synthesizing trees from samples (2008)
Rui Wang, Wei Hua, Zilong Dong, Hujun Bao, Qunsheng Peng
In this paper, we propose a novel tree modeling approach, synthesizing new trees from samples. First, we capture real world trees as samples by image-based modeling or laser scanning techniques....
Wei Chen, Huagen Wan, Hongxin Zhang, Hujun Bao, Qunsheng Peng
In this paper we present an interactive collision detection algorithm for complex and deformable objects. For two target models, our approach rapidly calculates their region of interests (ROI), which...
This paper introduces a kind of new wavelet radiosity method called multiresolution B-spline radiosity, which uses B-splines of different scales to represent radiosity distribution functions. A set...
A Smart Voxelization Algorithm (2008)
Zhao Dong, Wei Chen, Hujun Bao, Hongxin Zhang, Qunsheng Peng
In this paper we present a real-time voxelization algorithm which is implemented with newest programmable graphics hardware. The algorithm first converts geometric model into discrete voxel space....
Caustic spot light for rendering caustics (2008)
Liu, Xinguo, Dong, Zhao, Bao, Hujun, Peng, Qunsheng
It is difficult to render caustic patterns at interactive frame rates. This paper introduces new rendering techniques that relax current constraints, allowing scenes with moving, non-rigid scene...
Accelerating Accurate B-spline Free-form Deformation of Polygonal Objects (2007)
A previous paper described an algorithm for accurate B-spline free-form deformation of polygonal objects to produce triangular Bezier patches. However that algorithm computed the control points of...
Fast Algorithm for Composition of the Bernstein Polynomials (2007)
Composition of the Bernstein polynomials is an important research topic in computer-aided geometric design. This function is useful in implementing evaluation, subdivision, free-form deformation,...
This paper introduces a kind of new wavelet radiosity method called multiresolution B-spline radiosity, which uses B-splines of different scales to represent radiosity distribution functions. A set...
Identification and visualization of cage-shaped proteins (2007)
Hu, Min, Wang, Junhui, Peng, Qunsheng
Summary: Cage-shaped protein, with its special structure, may have potential applications in biomedicine and nanotechnology. We developed a program CSPro (Cage-Shaped Protein) for efficient...
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...
Shape Matching Based on Fully Automatic Face Detection on Triangular Meshes (2006)
Von Funck, Wolfram, Theisel, Holger, Seidel, Hans-Peter, Nishita, Tomoyuki, Peng, Qunsheng, Seidel, Hans-Peter
This paper tackles a particular shape matching problem: given a data base of shapes (described as triangular meshes), we search for all shapes which describe a human. We do so by applying a 3D face...
Visual Comput (2005) DOI 10.1007/s00371-005-0351-x ORIGINAL ARTICLE (2005)
Jieqing Feng, Jin Shao, Xiaogang Jin, Qunsheng Peng, A. Robin Forrest, J. Feng, ...
Space deformation is very useful in geometric modeling and computer animation. It can be described concisely as a mapping f from R 3 to R 3. A deformation method is totally determined by the mapping...
A Novel Volume Constrained Smoothing Method for Meshes (2003)
Xinguo Liu Micrpvp, Xinguo Liu, Hujun Bao, Heung-yeung Shum, Qunsheng Peng
this paper weprP ose a novel volume-constrDr smoothing method for trzPQ7Dy7 meshes, whichprpQU2 es exactly the mesh volume dureD the smoothing pr cess, so as toprU ent the mesh frh shrvz2PGD In this...
The Global Occlusion Map, A New Occlusion Culling Aproach, VRST'02 (2002)
Wei Hua, Hujun Bao, Qunsheng Peng, A. R. Forrest
Occlusion culling is an important technique to speed up the rendering process for walkthroughs in a complex environment. In this paper, we present a new approach for occlusion culling with respect to...
A novel volume constrained smoothing method for meshes (2002)
Xinguo Liu, Hujun Bao, Heung-Yeung Shum, Qunsheng Peng
In general, mesh smoothing is performed by minimizing the discrete energy function for the surface. One of the major problems in mesh smoothing is to prevent the mesh from shrinking. In this paper,...
Xinguo Liu, Hujun Bao, Heung-yeung Shum, Qunsheng Peng
In general, mesh smoothing is performed by minimizing the discrete energy function for the surface. One of the major problems in mesh smoothing is to prevent the mesh from shrinking. In this paper,...
Convolution surfaces for line skeletons with polynomial weight distributions (2001)
Xiaogang Jin, Chiew-lan Tai, Jieqing Feng, Qunsheng Peng
Abstract Convolution surfaces generalize point-based implicit surfaces to incorporate higherdimensional skeletal elements, of which line segments can be considered the most fundamental since they can...
A Hardware Assisted Ldi Building Algorithm With Application To Hybrid Volume Rendering (2001)
Wei Chen, Wenli Cai, Evelyn Firle, Min Wang, Q. Peng, Qunsheng Peng
This paper proposes a new hardware-assisted LDI Building algorithm with application to hybrid volume rendering. It works by creating Layered Depth Image (LDI) using OpenGL. Together with LDI, the...
Corresponding author. Tel.: 852-2788-8410; fax: 852- 2788-8423. (2000)
Mail Addresses Jin, Xiaogang Jin, Youfu Li, Qunsheng Peng
Space deformation is an important tool in computer animation and shape design. In this paper we present a new local deformation model based on generalized metaballs. The user speci"es a series...
General constrained deformations based on generalized metaballs (1998)
Xiaogang Jin, Y. F. Li, Qunsheng Peng
Space deformation is an important tool in computer animation and shape design. In this paper we propose a new local deformation model based on generalized metaballs. The user specifies a series of...
A progressive radiosity algorithm based on piecewise polynomial intensity distribution (1997)
Hujun Bao, Xiaogang Jin, Qunsheng Peng
AbstractÁA progressive radiosity algorithm based on piecewise polynomial intensity distribution is presented in the paper. Unlike the conventional radiosity method, radiosity across each patch is...
Surface Deformation Using the Sensor Glove (1997)
Lizhuang Ma, Jieqing Feng, Qunsheng Peng, Janis Wong
Intuitive 3D surface control and deformation are crucial to CAD/CAM. To do this in a virtual environment, however, the technique must be very efficient. A common method for shape deformation is the...
A new free-form deformation through the control of parametric surfaces (1996)
Jieqing Feng, Lizhuang Ma, Qunsheng Peng
A new free-form deformation method is presented in this paper. The deformation of an object is achieved by attaching it to two parametric surfaces, namely the shape surface r S u v ( , ) and the...
A new free-form deformation through the control of parametric surfaces (1996)
Jieqing Feng, Lizhuang Ma, Qunsheng Peng
A new free-form deformation method is presented in this paper. The deformation of an object is Á achieved by attaching it to two parametric surfaces, namely the shape surface Suv ( , ) and the...
Multiresolution B-spline Radiosity
This paper introduces a kind of new wavelet radiosity method called multiresolution B-spline radiosity, which uses B-splines of different scales to represent radiosity distribution functions. A set...