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Displaying 1-25 out of 25 total
Image-Based Material Restyling with Fast Non-local Means Filtering
Found in: Image and Graphics, International Conference on
By Bin Sheng, Ping Li, Hanqiu Sun
Issue Date:September 2009
pp. 841-846
This paper presents a new GPU-based implementation of fast non-local means (NLM) filtering for material restyling. Our fast NLM filtering algorithm is able to achive realtime feedback of interactive image editing. Furthermore a novel material editing metho...
 
Dynamic Labeling Management in Virtual and Augmented Environments
Found in: Computer Aided Design and Computer Graphics, International Conference on
By Fan Zhang, Hanqiu Sun
Issue Date:December 2005
pp. 397-402
Most applications in virtual and augmented reality usually need to visualize large amounts of extra text/image/video annotations associated with objects to assist user?s navigation. Labeling is one of the most intuitive techniques to achieve this goal, whi...
 
Compact Video Synopsis via Global Spatiotemporal Optimization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yongwei Nie, Chunxia Xiao, Hanqiu Sun, Ping Li
Issue Date:October 2013
pp. 1664-1676
Video synopsis aims at providing condensed representations of video data sets that can be easily captured from digital cameras nowadays, especially for daily surveillance videos. Previous work in video synopsis usually moves active objects along the time a...
 
Dynamic Fluids Mixed with Local-Control Effects
Found in: 2013 Seventh International Conference on Image and Graphics (ICIG)
By Liqun Wu,Shiguang Liu,Zhuojun Yu,Hanqiu Sun,Meng Zhang
Issue Date:July 2013
pp. 694-700
In dynamic fluid simulation, the user often need to control the local regions of the entire fluid scene for the special design effects, such as flowing marks and icons in dynamic fluids. Currently, the research aimed at such an issue is rare. It is rather ...
 
Color-Mood-Aware Clothing Re-texturing
Found in: Computer-Aided Design and Computer Graphics, International Conference on
By Jianbing Shen,Hanqiu Sun,Xiaoyang Mao,Yanwen Guo,Xiaogang Jin
Issue Date:September 2011
pp. 151-154
In this paper, we present a novel color-mood-aware technique to re-texture clothing in a photograph. An efficient classification algorithm is developed to classify clothing textures using color mood scheme. To re-texture the clothing, our approach first co...
 
Colorization Using the Rotation-Invariant Feature Space
Found in: IEEE Computer Graphics and Applications
By Bin Sheng, Hanqiu Sun, Shunbin Chen, Xuehui Liu, Enhua Wu
Issue Date:March 2011
pp. 24-35
Current colorization based on image segmentation makes it difficult to add or update color reliably and requires considerable user intervention A new approach gives similar colors to pixels with similar texture features. To do this, it uses rotation-invari...
 
Computing Efficient Matrix-valued Wavelets for Meshes
Found in: Pacific Conference on Computer Graphics and Applications
By Chong Zhao, Hanqiu Sun, Kaihuai Qin
Issue Date:September 2010
pp. 32-38
In recent years, several subdivision wavelets, which are constructed directly from the subdivision templates, proposed for the triangular and quadrilateral meshes. To reduce the algorithm complexity, most deploy the local lifting and discrete inner product...
 
Interactive Fur Shaping and Rendering Using Nonuniform-Layered Textures
Found in: IEEE Computer Graphics and Applications
By Gang Yang, Hanqiu Sun, Enhua Wu, Lifeng Wang
Issue Date:July 2008
pp. 85-93
This system represents furry surfaces as nonuniform layers of texture slices, automatically adjusting the layers to achieve efficient, high-quality rendering. It employs layered shadow maps to simulate self-shadowing. Interactive tools let users intuitivel...
 
Mesh-Guided Optimized Retexturing for Image and Video
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yanwen Guo, Hanqiu Sun, Qunsheng Peng, Zhongding Jiang
Issue Date:March 2008
pp. 426-439
This paper presents an approach of replacing textures of specified regions in the input image/video with new ones. The replacement results have the similar distortion and shading effects conforming to the underlying geometry and lighting conditions. For re...
 
√3-Subdivision-Based Biorthogonal Wavelets
Found in: IEEE Transactions on Visualization and Computer Graphics
By Huawei Wang, Kaihuai Qin, Hanqiu Sun
Issue Date:September 2007
pp. 914-925
A new efficient biorthogonal wavelet analysis based on the √3 subdivision is proposed in the paper by using the lifting scheme. Since the √3 subdivision is of the slowest topological refinement among the traditional triangular subdivisi...
 
Layer-Based Representation of Polyhedrons for Point Containment Tests
Found in: IEEE Transactions on Visualization and Computer Graphics
By Wencheng Wang, Jing Li, Hanqiu Sun, Enhua Wu
Issue Date:January 2008
pp. 73-83
<p><b>Abstract</b>—This paper presents the layer-based representation of polyhedrons and its use for point-in-polyhedron tests. In the representation, the facets and edges of a polyhedron are sequentially arranged, and so the binary searc...
 
Progressive Geometry Compression for Meshes
Found in: Computer Graphics and Applications, Pacific Conference on
By Xinguo Liu, Hujun Bao, Qunsheng Peng, PhengAnn Heng, TienTsin Wong, Hanqiu Sun
Issue Date:October 2000
pp. 408
A novel progressive geometry compression scheme is presented in the paper. In this scheme a mesh is represented as a base mesh followed by some groups of vertex split operations using an improved simplification method, in which each level of the mesh can b...
 
A Distributed Hybrid Rendering Algorithm for Highly Complex Scenes
Found in: Computer Graphics and Applications, Pacific Conference on
By Wenting Zheng, Hujun Bao, Qunsheng Peng, Hanqiu Sun
Issue Date:October 1999
pp. 222
A distributed virtual reality system base on a hybrid rendering scheme is presented in this paper. Unlike the traditional image based rending algorithm, our approach divides the local scene within the frustum of the current viewpoint into two layers, i.e.,...
 
Interactive Animation: A Language and System for Procedural Modeling and Motion
Found in: IEEE Computer Graphics and Applications
By Mark Green, Hanqiu Sun
Issue Date:November 1988
pp. 52-64
<p>A description is given of MML, a special-purpose programming language developed for procedural models. The language is used to specify both the generation of the model and the motion of the objects in the model. A motion specification technique th...
 
Parallel iso/aniso-scale surface texturing guided in Gabor space
Found in: SIGGRAPH Asia 2013 Technical Briefs (SA '13)
By Daniel Thalmann, Bin Sheng, Hanqiu Sun, Yubao Wu
Issue Date:November 2013
pp. 1-4
This paper presents a parallel texture synthesis over arbitrary surfaces, generating consistent and spatially-varying visual appearances. A novel scaling field is represented to measure the geometry-aware appearance or geometric deformation, therefore the ...
     
Efficient deformable geometry image-maps
Found in: Proceedings of the 17th ACM Symposium on Virtual Reality Software and Technology (VRST '10)
By Bin Sheng, Hanqiu Sun
Issue Date:November 2010
pp. 93-94
Multiresolution rendering of deformable models, performing fast rendering of global deformations while preserving local surface details, is usually a computation-costly and time-consuming process, because two non-trivial operators are involved. We propose ...
     
Fast soft shadow by depth peeling
Found in: ACM SIGGRAPH 2010 Posters (SIGGRAPH '10)
By En-Hua Wu, Fang Liu, Hanqiu Sun, Mengcheng Huang, Mingquan Zhou, Xiaoguang Hao, Xuehui Liu
Issue Date:July 2010
pp. 1-1
Soft shadow generation is a challenging problem in realistic rendering. Previous methods using shadow map or shadow volume work well for point light sources but are difficult to be extended to area lights. This paper presents a new method for fast soft sha...
     
Real-time haptic sculpting in virtual volume space
Found in: Proceedings of the ACM symposium on Virtual reality software and technology (VRST '02)
By Hanqiu Sun, Hui Chen
Issue Date:November 2002
pp. 81-88
Virtual sculpture is a modeling technique for computer graphics based on the notion of sculpting a solid material with tools. Currently, most interactive sculpture is mainly focused on vision-based sensory channel. With visual feedback alone virtual sculpt...
     
Rendering of virtual environments based on polygonal & point-based models
Found in: Proceedings of the ACM symposium on Virtual reality software and technology (VRST '02)
By Hanqiu Sun, Hujun Bao, Qunsheng Peng, Wenting Zheng
Issue Date:November 2002
pp. 25-32
Real-time rendering for large-scale, complex dynamic virtual scenes is a challenging problem in computer graphics. In this paper, we propose a hybrid rendering algorithm of dynamic virtual environments that seamlessly fuses the point-based scheme and polyg...
     
Direct haptic rendering of isosurface by intermediate representation
Found in: Proceedings of the ACM symposium on Virtual reality software and technology (VRST '00)
By Hanqiu Sun, Kwong-Wai Chen, Pheng-Ann Heng
Issue Date:October 2000
pp. 188-194
With the development of volume visualization methods, we can easily extract meaningful information from volumetric data using interactive graphics and imaging. Haptic interaction of volumetric data adds a new modality to volume visualization that has an ad...
     
A hybrid method of image synthesis in IBR for novel viewpoints
Found in: Proceedings of the ACM symposium on Virtual reality software and technology (VRST '00)
By Enhua Wu, Hanqiu Sun, Xuehui Liu
Issue Date:October 2000
pp. 55-60
Due to visibility change and surface enlargement in producing a novel view from a new viewpoint, 3D re-projection from one reference image in IBMR inevitably produces holes in the destination image. Even worse, exposure errors occur when a background regio...
     
Interactive task planning in virtual assembly
Found in: Proceedings of the ACM symposium on Virtual reality software and technology (VRST '99)
By Bao Hujun, Hanqiu Sun, Tong Ngai Man, Wu Lam Fai
Issue Date:December 1999
pp. 174-175
We propose a task planner that incorporates with a virtual reality interface for 3D immersive interaction of CAD models and high-level task planning of mating processes. The planner is constructed with the following objectives: 3D immersive VR interface, a...
     
Virtual world modeler
Found in: Proceedings of the ACM symposium on Virtual reality software and technology 1998 (VRST '98)
By Elton K. H. Tsang, Hanqiu Sun, Mark Green
Issue Date:November 1998
pp. 179-186
This paper is a personal reflection on the different communities that are contributing to the design and implementation of multi-user virtual world systems. Given the Web3D Consortium's considered re-labeling from “VRML” to “Web3D” ...
     
Hardware-assisted virtual collisions
Found in: Proceedings of the ACM symposium on Virtual reality software and technology 1998 (VRST '98)
By George Baciu, Hanqiu Sun, Wingo Sai-Keung Wong
Issue Date:November 1998
pp. 145-151
This paper is a personal reflection on the different communities that are contributing to the design and implementation of multi-user virtual world systems. Given the Web3D Consortium's considered re-labeling from “VRML” to “Web3D” ...
     
Reconstruction of 3D virtual buildings from 2D architectural floor plans
Found in: Proceedings of the ACM symposium on Virtual reality software and technology 1998 (VRST '98)
By Clifford So, George Baciu, Hanqiu Sun
Issue Date:November 1998
pp. 17-23
This paper is a personal reflection on the different communities that are contributing to the design and implementation of multi-user virtual world systems. Given the Web3D Consortium's considered re-labeling from “VRML” to “Web3D” ...
     
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