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Displaying 1-22 out of 22 total
Research on the Application of Foamed Aluminum Composite Structure in High Speed Spindle
Found in: Measuring Technology and Mechatronics Automation, International Conference on
By Yu Ying-hua, Yang Kun, Xu Ping
Issue Date:January 2011
pp. 95-98
Take MI432A internal grinder spindle for example, researching structure design and optimization on the application of foamed aluminum composite structure in high speed spindle. And make the finite element analysis of static and dynamic performance between ...
 
A Practical Study on Geographic Semantic Web Services Based on OWL-S
Found in: Computing, Control and Industrial Engineering, International Conference on
By Peng Shuang-yun, Ma Wei-feng, Yang Kun, Xu Quan-li, Huang Bang-mei
Issue Date:June 2010
pp. 190-194
With the development of Semantic Web technology, the Geographic service based on OWL-S is an effective way for sharing and interoperation of heterogeneous information resources in the distributed network environment. This paper focuses on how to dynamic fi...
 
A k-Means-Based Projected Clustering Algorithm
Found in: Computational Sciences and Optimization, International Joint Conference on
By Yufen Sun, Gang Liu, Kun Xu
Issue Date:May 2010
pp. 466-470
In high dimensional data space, clusters are likely to exist in different subspaces. K-means is a classic clustering algorithm, but it cannot be used to find subspace clusters. In this paper, an algorithm called GKM is designed to generalize k-means algori...
 
Research on Network Operation Complexity Model and its Application
Found in: Signal Processing Systems, International Conference on
By Feng Han, Jian-xin Wang, Gang Xiao, Kun Xu
Issue Date:May 2009
pp. 644-648
Network operation complexity model is proposed in this paper. This model includes nested system model, operation process model and quantitative indicator model. Then, a normalization treatment method of indicator data is put forward. After constructing a n...
 
Evacuation Flow Assignment based on Improved MCMF Algorithm
Found in: Intelligent Networks and Intelligent Systems, International Workshop on
By Fan Yang, Xinping Yan, Kun Xu
Issue Date:November 2008
pp. 637-640
During special events in urban transport network, traffic flow supported by route network is obviously different to that in normal circumstance. In the process of special events evacuation, it’s not only hoped a mass flow can be evacuated to some shelters,...
 
Quantum Multi-objective Evolutionary Algorithm with Particle Swarm Optimization Method
Found in: International Conference on Natural Computation
By Zhiyong Li, Kun Xu, Songbing Liu, Kenli Li
Issue Date:October 2008
pp. 672-676
This paper proposes a novel algorithm for Multiobjective Optimization Problems based on Quantum Particle Swarm. To improve performance of original particle swarm optimization algorithm and avoid trapping to local excellent situations, this method construct...
 
Spherical Piecewise Constant Basis Functions for All-Frequency Precomputed Radiance Transfer
Found in: IEEE Transactions on Visualization and Computer Graphics
By Kun Xu, Yun-Tao Jia, Hongbo Fu, Shimin Hu, Chiew-Lan Tai
Issue Date:March 2008
pp. 454-467
This paper presents a novel basis function, called spherical piecewise constant basis function (SPCBF), for precomputed radiance transfer. SPCBFs have several desirable properties: rotatability, ability to represent all-frequency signals, and support for e...
 
Performance Analysis in Content-Based Retrieval with Textures
Found in: Pattern Recognition, International Conference on
By Kun Xu, Bogdan Georgescu, Peter Meer, Dorin Comaniciu
Issue Date:September 2000
pp. 4275
The features employed in content-based retrieval are most often simple low-level representations, while a human observer judges similarity between images based on high-level semantic properties. Using textures as an example, we show that a more accurate de...
 
Retrieval Performance Improvement through Low Rank Corrections
Found in: Content-Based Access of Image and Video Libraries, IEEE Workshop on
By Dorin Comaniciu, Peter Meer, Kun Xu, David Tyler
Issue Date:June 1999
pp. 50
Whenever a feature extracted from an image has a unimodal distribution, information about its covariance matrix can be exploited for content-based retrieval using as dissimilarity measure the Bhattacharyya distance. To reduce the amount of computations and...
 
An Improved Joint Detection Approach for TD-SCDMA System over Multipath Channels
Found in: Information Science and Engineering, International Conference on
By Xin Gao, Xiaofei Zhang, Gaopeng Feng, Kun Xu
Issue Date:December 2009
pp. 2551-2554
This paper investigates the joint detection method for TD-SCDMA system, and derives an improved approach to eliminate inter-symbol interference (ISI) in condition of multipath channel. Analysis for the received signals exhibits its characteristics of PARAl...
 
Efficient affinity-based edit propagation using K-D tree
Found in: ACM Transactions on Graphics (TOG)
By Kun Xu, Shi-Min Hu, Tao Ju, Tian-Qiang Liu, Yong Li, Kun Xu, Shi-Min Hu, Tao Ju, Tian-Qiang Liu, Yong Li
Issue Date:December 2009
pp. 1-2
Image/video editing by strokes has become increasingly popular due to the ease of interaction. Propagating the user inputs to the rest of the image/video, however, is often time and memory consuming especially for large data. We propose here an efficient s...
     
Change Blindness Images
Found in: IEEE Transactions on Visualization and Computer Graphics
By Li-Qian Ma, Kun Xu, Tien-Tsin Wong, Bi-Ye Jiang, Shi-Min Hu
Issue Date:November 2013
pp. 1808-1819
Change blindness refers to human inability to recognize large visual changes between images. In this paper, we present the first computational model of change blindness to quantify the degree of blindness between an image pair. It comprises a novel context...
 
Answering label-constraint reachability in large graphs
Found in: Proceedings of the 20th ACM international conference on Information and knowledge management (CIKM '11)
By Dongyan Zhao, Jeffery Xu Yu, Kun Xu, Lei Chen, Lei Zou, Yanghua Xiao
Issue Date:October 2011
pp. 1595-1600
In this paper, we study a variant of reachability queries, called label-constraint reachability (LCR) queries, specifically,given a label set S and two vertices u1 and u2 in a large directed graph G, we verify whether there exists a path from u1 to u2 unde...
     
A practical algorithm for rendering interreflections with all-frequency BRDFs
Found in: ACM Transactions on Graphics (TOG)
By Kun Xu, Li-Qian Ma, Rui Wang, Shi-Min Hu, Yan-Pei Cao, Zhao Dong
Issue Date:January 2014
pp. 1-16
Algorithms for rendering interreflection (or indirect illumination) effects often make assumptions about the frequency range of the materials' reflectance properties. For example, methods based on Virtual Point Lights (VPLs) perform well for diffuse and se...
     
Anisotropic spherical Gaussians
Found in: ACM Transactions on Graphics (TOG)
By Dan-Yong Zhao, Kun Xu, Zhao Dong, Run-Dong Wu, Shi-Min Hu, Wei-Lun Sun
Issue Date:November 2013
pp. 1-11
We present a novel anisotropic Spherical Gaussian (ASG) function, built upon the Bingham distribution [Bingham 1974], which is much more effective and efficient in representing anisotropic spherical functions than Spherical Gaussians (SGs). In addition to ...
     
Inverse image editing: recovering a semantic editing history from a before-and-after image pair
Found in: ACM Transactions on Graphics (TOG)
By Bin Liu, Jue Wang, Kun Xu, Bi-Ye Jiang, Li-Qian Ma, Shi-Min Hu
Issue Date:November 2013
pp. 1-11
We study the problem of inverse image editing, which recovers a semantically-meaningful editing history from a source image and an edited copy. Our approach supports a wide range of commonly-used editing operations such as cropping, object insertion and re...
     
Sketch2Scene: sketch-based co-retrieval and co-placement of 3D models
Found in: ACM Transactions on Graphics (TOG)
By Hongbo Fu, Kang Chen, Kun Xu, Shi-Min Hu, Wei-Lun Sun
Issue Date:July 2013
pp. 1-15
This work presents Sketch2Scene, a framework that automatically turns a freehand sketch drawing inferring multiple scene objects to semantically valid, well arranged scenes of 3D models. Unlike the existing works on sketch-based search and composition of 3...
     
Interactive hair rendering and appearance editing under environment lighting
Found in: ACM Transactions on Graphics (TOG)
By Bo Ren, Kun Xu, Li-Qian Ma, Rui Wang, Shi-Min Hu
Issue Date:December 2011
pp. 1-15
We present an interactive algorithm for hair rendering and appearance editing under complex environment lighting represented as spherical radial basis functions (SRBFs). Our main contribution is to derive a compact 1D circular Gaussian representation that ...
     
Interactive hair rendering and appearance editing under environment lighting
Found in: Proceedings of the 2011 SIGGRAPH Asia Conference (SA '11)
By Bo Ren, Kun Xu, Li-Qian Ma, Rui Wang, Shi-Min Hu
Issue Date:December 2011
pp. 1-137
We present an interactive algorithm for hair rendering and appearance editing under complex environment lighting represented as spherical radial basis functions (SRBFs). Our main contribution is to derive a compact 1D circular Gaussian representation that ...
     
Interactive hair rendering and appearance editing under environment lighting
Found in: Proceedings of the 2011 SIGGRAPH Asia Conference (SA '11)
By Bo Ren, Kun Xu, Li-Qian Ma, Rui Wang, Shi-Min Hu
Issue Date:December 2011
pp. 1-10
We present an interactive algorithm for hair rendering and appearance editing under complex environment lighting represented as spherical radial basis functions (SRBFs). Our main contribution is to derive a compact 1D circular Gaussian representation that ...
     
Efficient affinity-based edit propagation using K-D tree
Found in: ACM SIGGRAPH Asia 2009 papers (SIGGRAPH Asia '09)
By Kun Xu, Shi-Min Hu, Tao Ju, Tian-Qiang Liu, Yong Li
Issue Date:December 2009
pp. 1-6
Image/video editing by strokes has become increasingly popular due to the ease of interaction. Propagating the user inputs to the rest of the image/video, however, is often time and memory consuming especially for large data. We propose here an efficient s...
     
Facile Synthesis of Silver Nanoparticles and their Antimicrobial Activity against Several Representative Microbial Species
Found in: Biomedical Engineering and Biotechnology, International Conference on
By Wen-xing Wang,Li Geng,Shuang Ding,Shu-kun Xu
Issue Date:May 2012
pp. 287-290
Uniform spherical silver nanoparticles with about 26 nm and good stability were synthesized by facile gallic acid reduction method. The antimicrobial activity of silver nanoparticles was investigated using several representative microbial species including...
 
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