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- posterJuly 2022
On the effect of embedding hierarchy within multi-objective optimization for evolving symbolic regression models
GECCO '22: Proceedings of the Genetic and Evolutionary Computation Conference CompanionPages 594–597https://doi.org/10.1145/3520304.3528808Symbolic Regression is sometimes treated as a multi-objective optimization problem where two objectives (Accuracy and Complexity) are optimized simultaneously. In this paper, we propose a novel approach, Hierarchical Multi-objective Symbolic Regression (...
- research-articleFebruary 2022
Research on the Application of VR Animation Technology in Traditional Folk Game Demonstration——: Take the traditional game pyramid in Dunhuang fresco as an example
WSSE '21: Proceedings of the 3rd World Symposium on Software EngineeringPages 180–185https://doi.org/10.1145/3488838.3488869Abstract: Traditional folk games are often rooted in time-honored local culture and customs. As intangible cultural heritages, many traditional folk games are of great significance to the study of national will and local customs and culture. With the ...
- research-articleFebruary 2020
Artifacts Reduction for Compression Image with Pyramid Residual Convolutional Neural Network
ICVIP '19: Proceedings of the 3rd International Conference on Video and Image ProcessingPages 245–250https://doi.org/10.1145/3376067.3376086A pyramid residual convolutional neural network (PRCNN) is proposed to restore image with compression artifacts in this paper, and the method is enable to process multiple resolutions by fixing patch size extracted from whole image. Convolutional neural ...
- invited-talkAugust 2018
Real time muography simulator for scanpyramids mission
SIGGRAPH '18: ACM SIGGRAPH 2018 TalksArticle No.: 2, Pages 1–2https://doi.org/10.1145/3214745.3214771In October 2015, the ScanPyramids (SP)1 mission started looking for unknown structures inside Egyptian pyramids with non-invasive technologies. Possibly the most successful imaging technology was muography which is similar to X-ray radiography but with ...
- research-articleJanuary 2016
A Short Note on a Bernstein--Bezier Basis for the Pyramid
SIAM Journal on Scientific Computing (SISC), Volume 38, Issue 4Pages A2162–A2172https://doi.org/10.1137/15M1036397We introduce a Bernstein--Bezier basis for the pyramid, whose restriction to the face reduces to the Bernstein--Bezier basis on the triangle or quadrilateral. The basis satisfies the standard positivity and partition of unity properties common to Bernstein ...
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- research-articleJanuary 2016
Orthogonal Bases for Vertex-Mapped Pyramids
SIAM Journal on Scientific Computing (SISC), Volume 38, Issue 2Pages A1146–A1170https://doi.org/10.1137/15M1011408Discontinuous Galerkin (DG) methods discretized under the method of lines must handle the inverse of a block diagonal mass matrix at each time step. Efficient implementations of the DG method hinge upon inexpensive and low-memory techniques for the ...
- ArticleDecember 2014
Research on Large Scale 3D Terrain Generation
CSE '14: Proceedings of the 2014 IEEE 17th International Conference on Computational Science and EngineeringPages 1827–1832https://doi.org/10.1109/CSE.2014.335Large Scale 3D Terrain Generation is a hot and difficult problem in many applications, such as Geographic Information System (GIS), Virtual Reality (VR) and 3D games. The key issues of 3D terrain Generation are how to store massive terrain data and how ...
- research-articleJanuary 2014
Efficient Mesh Optimization Using the Gradient Flow of the Mean Volume
SIAM Journal on Numerical Analysis (SINUM), Volume 52, Issue 2Pages 1050–1075https://doi.org/10.1137/130914000The signed volume function for polyhedra can be generalized to a mean volume function for volume elements by averaging over the triangulations of the underlying polyhedron. If we consider these up to translation and scaling, the resulting quotient space is ...
- ArticleNovember 2012
Top-down tracking and estimating 3d pose of a die
SSPR'12/SPR'12: Proceedings of the 2012 Joint IAPR international conference on Structural, Syntactic, and Statistical Pattern RecognitionPages 492–500https://doi.org/10.1007/978-3-642-34166-3_54Real-time 3D pose estimation from monocular image sequences is a challenging research topic. Although current methods are able to recover 3D pose, they are severely challenged by the computational cost. To address this problem, we propose a tracking and ...
- ArticleNovember 2012
Motion Analysis and Research of Local Navigation System for Visual-Impaired Person Based on Improved LK Optical Flow
ICINIS '12: Proceedings of the 2012 Fifth International Conference on Intelligent Networks and Intelligent SystemsPages 348–351https://doi.org/10.1109/ICINIS.2012.80For the problem of low detection accuracy and slow speed to fast motion object, when solving the basic optical flow constraint equation with the traditional algorithm, an improved optical flow algorithm based on LK optical flow algorithm has been put ...
- ArticleSeptember 2012
The hamiltonicity of WK-Recursive pyramid
ICA3PP'12: Proceedings of the 12th international conference on Algorithms and Architectures for Parallel Processing - Volume Part IIPages 90–99https://doi.org/10.1007/978-3-642-33065-0_10Fernandes and Kanevsky proposed an important structure in interconnection network, WKR Pyramid Networks (WKP(d, t, L), for short), in 1993. They are constructed by taking difference size WK-recursive network as difference layers. That paper discussed ...
- ArticleSeptember 2011
Interpreting hidden neurons in boolean constructive neural networks
A particular group of neural network (NN) learning algorithms known as constructive algorithms (CoNN) congregates algorithms that dynamically combine two processes: (1) the definition of the NN architecture and (2) learning. Generally both processes ...
- ArticleMay 2011
Pyramid-Based Multi-scale LBP Features for Face Recognition
CMSP '11: Proceedings of the 2011 International Conference on Multimedia and Signal Processing - Volume 01Pages 151–155To efficiently extract local and global features in face description and recognition, a pyramid-based multi-scale LBP approach is proposed. Firstly, the face image pyramid is constructed through multi-scale analysis. Then the LBP operator is applied to ...
- ArticleFebruary 2011
Energy spectra of an electron in a pyramid-shaped quantum dot in effective mass approximation with even mirror boundary conditions
- Yuri Vorobiev,
- Vítor Vieira,
- Pedro Ribeiro,
- Valentina Gorley,
- Paul Horley,
- Jesús González-Hernández,
- Tetyana Torchynska
We study the problem of an electron confined in a semiconductor quantum dot shaped as a square-base pyramid, assuming specular reflection of a particle from quantum dot boundaries. The application of boundary condition equals the wave function in an ...
- ArticleDecember 2009
Example-Based Facial Sketch Hallucination
CIS '09: Proceedings of the 2009 International Conference on Computational Intelligence and Security - Volume 01Pages 578–582https://doi.org/10.1109/CIS.2009.159In this paper, we propose an example-based facial sketch hallucination approach. Given a face image, its sketch image will be automatically hallucinated by learning from a training set, which includes a lot of face images and their corresponding sketch ...
- research-articleNovember 2009
Spatial pyramid based histogram representation for visual tracking with partial occlusion
ICIMCS '09: Proceedings of the First International Conference on Internet Multimedia Computing and ServicePages 29–33https://doi.org/10.1145/1734605.1734616We propose a pyramid based representation together with a partial weighted similarity measure to address the partial occlusion problem in visual tracking. In current histogram based tracking methods, due to the lost of spatial information, occlusion ...
- ArticleSeptember 2009
A Fast Medical Image Registration Based on Steerable Pyramid
IIH-MSP '09: Proceedings of the 2009 Fifth International Conference on Intelligent Information Hiding and Multimedia Signal ProcessingPages 961–964https://doi.org/10.1109/IIH-MSP.2009.110In this paper, we present a fast algorithm for medical image registration. Through utilizing steerable filters, we can extract multi-directional feature information of image steadily and then combine it to obtain synthesized feature graph for more ...
- ArticleSeptember 2009
Fast Edge Map Pyramids for Hexagonal Image Structures
IMVIP '09: Proceedings of the 2009 13th International Machine Vision and Image Processing ConferencePages 41–46https://doi.org/10.1109/IMVIP.2009.15Improving the computational efficiency of image processing tasks has become a dominant issue with the ultimate goal of real-time processing. One solution to improve efficiency is the use of a hexagonal image representation and we present an approach to ...
- articleFebruary 2009
Stable and Compatible Polynomial Extensions in Three Dimensions and Applications to the $p$ and $h$-$p$ Finite Element Method
SIAM Journal on Numerical Analysis (SINUM), Volume 47, Issue 2Pages 1195–1225https://doi.org/10.1137/070688006Polynomial extensions play a vital role in the analysis of the $p$ and $h$-$p$ finite element method (FEM) and the spectral element method. We construct explicitly polynomial extensions on standard elements: cubes and triangular prisms, which together ...
- research-articleNovember 2008
The Pairing of a Wavelet Basis With a Mildly Redundant Analysis via Subband Regression
IEEE Transactions on Image Processing (TIP), Volume 17, Issue 11Pages 2040–2052https://doi.org/10.1109/TIP.2008.2004607A distinction is usually made between wavelet bases and wavelet frames. The former are associated with a one-to-one representation of signals, which is somewhat constrained but most efficient computationally. The latter are over-complete, but they offer ...