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检索条件"任意字段=International Conference on Computer Graphics, Imaging and Visualization"

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A GPU-based Mipmapping Method for Water Surface visualization 10

A GPU-based Mipmapping Method for Water Surface Visualizatio...

引用

10th international Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR) - Parallel Processing of Images and Optimization Techniques;and Medical imaging

作者： Li, Hua Quan, Wei Xu, Chao Wu, Yan Changchun Univ Sci & Technol Sch Comp Sci & Technol Changchun 130022 Jilin Peoples R China Natl Local Combined Engn Res Ctr Special Film Tec Changchun 130000 Jilin Peoples R China

ISBN: (数字)9781510617247

ISBN: (纸本)9781510617247;9781510617230

visualization of water surface is a hot topic in computer graphics. In this paper, we presented a fast method to generate wide range of water surface with good image quality both near and far from the viewpoint. This method utilized uniform mesh and Fractal Perlin noise to model water surface. Mipmapping technology was enforced to the surface textures, which adjust the resolution with respect to the distance from the viewpoint and reduce the computing cost. Lighting effect was computed based on shadow mapping technology, Snell's law and Fresnel term. The render pipeline utilizes a CPU-GPU shared memory structure, which improves the rendering efficiency. Experiment results show that our approach visualizes water surface with good image quality at real-time frame rates performance.

关键词： Mipmap fractal Perlin noise water surface shadow map

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Creation of a Noh mask using a 3D computer graphics technique

Creation of a Noh mask using a 3D computer graphics techniqu...

引用

international conference on Information Visualisation (IV)

作者： A. Tohma K. Shimohara Y. Tohkura N. Yokoya Nara Institute of Science and Technology Japan Communication Science Laboratories NTT Japan

To examine how computer technology can produce delicate, audience-inspiring presentations like "Noh", we attempted to create a Noh mask (Ko-omote) using a 3D computer graphics technique, by only referring to a carved wooden mask. It was possible to detect several characteristics of the mask's structure in the creation process. Rendering images showed the possibility that such a specific structure is closely related to effects of subtle facial expression changes. In order to bring more diverse effect to audiences, we also attempted to create a computer animation combining the mask model with story, movement and background images. This paper suggests the possibility of acquiring profound experiences with the perception and expression of "face" for both viewers and creators by using a computer graphics technique.

关键词： computer graphics Focusing Facial animation Communications technology Laboratories Rendering (computer graphics) Diversity reception Hardware Animals Image reconstruction

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7th international conference on Augmented Reality, Virtual Reality, and computer graphics, AVR 2020

7th International Conference on Augmented Reality, Virtual R...

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7th international conference on Augmented Reality, Virtual Reality, and computer graphics, AVR 2020

ISBN: (纸本)9783030584672

The proceedings contain 60 papers. The special focus in this conference is on Augmented Reality, Virtual Reality, and computer graphics. The topics include: Using augmented reality to train flow patterns for pilot students - an explorative study;scalable integration of image and face based augmented reality;usability of an input modality for ar;asymmetrical multiplayer versus single player: Effects on game experience in a virtual reality edutainment game;state of the art of non-vision-based localization technologies for ar in facility management;ai4ar: An ai-based mobile application for the automatic generation of ar contents;ar-based visual aids for suas operations in security sensitive areas;global-map-registered local visual odometry using on-the-fly pose graph updates;combining hololens and leap-motion for free hand-based 3d interaction in mr environments;mixed reality annotations system for museum space based on the uwb positioning and mobile device;a glasses-based holographic tabletop for collaborative monitoring of aerial missions;a comparative study of the influence of the screen size of mobile devices on the experience effect of 3d content in the form of ar/vr technology;photogrammetric 3d reconstruction of small objects for a real-time fruition;adaptive detection of single-color marker with webgl;procedural content generation via machine learning in 2d indoor scene;users’ adaptation to non-standard controller schemes in 3d gaming experiences;3d dynamic hand gestures recognition using the leap motion sensor and convolutional neural networks;rgb-d image inpainting using generative adversarial network with a late fusion approach;3d radial layout for centrality visualization in graphs;preface.

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computer and Computing Technologies in Agriculture IX 1

引用

丛书名： IFIP Advances in Information and Communication Technology

1000年

作者： Daoliang Li Zhenbo Li

ISBN: (数字)9783319483542

ISBN: (纸本)9783319483535;9783319839196

The two volumes IFIP AICT 478 and 479 constitute the refereed post-conference proceedings of the 9th IFIP WG 5.14 international conference on computer and Computing Technologies in Agriculture, CCTA 2015, held in Beijing, China, in September 2015. The 122 revised papers included in this volume were carefully selected from 237 submissions. They cover a wide range of interesting theories and applications of information technology in agriculture, including intelligent sensing, monitoring and automatic control technology; key technology and models of the Internet of things; intelligent technology for agricultural equipment; computer vision; computer graphics and virtual reality; computer simulation, optimization and modeling; cloud computing and agricultural applications; agricultural big data; decision support systems and expert systems; 3s technology and precision agriculture; quality and safety of agricultural products; detection and tracing technology; and agricultural electronic commerce technology.

关键词： computer Applications Information Systems and Communication Service Agriculture Math Applications in computer Science computer Systems Organization and Communication Networks computer imaging, Vision, Pattern Recognition and graphics

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Extracting Separation Surfaces of Path Line Oriented Topology in Periodic 2D Time-Dependent Vector Fields

Extracting Separation Surfaces of Path Line Oriented Topolog...

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15th international conference in Central Europe on computer graphics, visualization and computer Vision

作者： Shi, Kuangyu Theisel, Holger Weinkauf, Tino Hauser, Helwig Hege, Hans-Christian Seidel, Hans-Peter MPI Informat D-66123 Saarbrucken Germany

ISBN: (纸本)9788086943008

This paper presents an approach to extracting the separation surfaces from periodic 2D time-dependent vector fields based on a recently introduced path line oriented topology. This topology is based on critical path lines which repeat the same spatial cycle per time period. Around those path lines there are areas of similar asymptotic flow behavior (basins) which are captured by a 2D Poincare map as a discrete dynamical system. Due to pseudo discontinuities in this map and the discrete integration scheme, separatrices between the basins can't be obtained as integral curves. Instead we choose a point-wise approach to segment the Poincare map and apply image analysis algorithms to extract the 2D separation curves. Starting from those curves we integrate separation surfaces which partition the periodic 2D time-dependent vector field into areas of similar path line behavior. We apply our approach to a number of data sets to demonstrate its utility.

关键词： Flow visualization Time-dependent vector fields Topological methods

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The Design, Development and Evaluation of Virtual Reality Learning Environment for Numeracy Concepts Using 3D Virtual Manipulatives

The Design, Development and Evaluation of Virtual Reality Le...

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international conference on computer graphics, imaging and visualization, CGIV

作者： L. Daghestani R. D. Ward Z. Xu H. Al-Nuaim University of Huddersfield UK King Abdulaziz University Saudi Arabia

ISBN: (纸本)9780769533599;0769533590

Virtual reality (VR) offers potentials and challenges for teaching and learning. For learners of elementary mathematics, it has been suggested that VR offers promising ways of representing numeracy (number and operations) concepts in the form of virtual manipulatives (VM). This project aims at investigating VR learning environments to elementary numeracy education using 3D VM. This paper focuses on 3 aspects. The first is the evaluation of an existing mathematical virtual learning environment (MAVLE) in order to analyze and evaluate the current 2D virtual manipulatives. The results of this study will form the basis for the design and development of an innovative conceptual prototype - MAVLE. While the second step is to construct a framework for the MAVLE prototype by highlighting other factors that are important for system implementation. The third aspect will be applying the outcomes from other two stages and providing benchmarks and guidance's to the future design and development of virtual learning environment.

关键词： Education Educational institutions Three dimensional displays Prototypes computers Mathematics visualization

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Integrated registration based on statistical modeling for medical volume images and its visualization

Integrated registration based on statistical modeling for me...

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2009 international conference on Image Processing, computer Vision, and Pattern Recognition, IPCV 2009

作者： Park, J.H. Lee, G.S. Kim, S.H. Lim, J.S. Park, S.Y. Cho, W.H. School of Electronics and Computer Engineering Chonnam National University Korea Republic of Department of Electronics Engineering Mokpo National University Korea Republic of Department of Statistics Chonnam National University Korea Republic of

ISBN: (纸本)9781601321190

Different imaging modalities give insight to anatomical and functional information which assist diagnosis and therapy planning in medicine. Registration and consecutive visualization allow to combine the image data and thereby convey more meaningful images to the clinician. We propose a new registration technique and volume visualization approaches of the registered results. As a new optimization measure of registration, we define a Q-function based on the estimated log-likelihood function. First, we segment a medical volume data using the fast matching and geometric deformable model. Next, we use the hidden Markov random field model and the Gaussian mixture model to statistically represent the spatial dependency and the intensity distribution of each voxel at the surface region. Volume visualization systems are presented to create the interprétable multidimensional data representation during registration process. To visualize the performance of the proposed registration method, we conduct the direct and the indirect volume rendering. The direct approach is based on the volume ray casting technique and the indirect visualization method is based on the surface fitting algorithm. The experimental results show that our proposed method has great potential power to register and visualize multimodality volume images.

关键词： visualization

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computer graphic study of advanced manufacturing technology with chaos characteristic analysis

Computer graphic study of advanced manufacturing technology ...

引用

2021 international conference on computer Technology and Power Electronics, ICCTPE 2021

作者： Sun, Yanling Chen, Ning College of Science Shenyang Jianzhu University Liaoning Shenyang China Faculty of Information and Control Engineering Shenyang Jianzhu University Liaoning Shenyang China

This paper uses the characteristics of computer graphics to study advanced production technology and carry out chaotic characteristics. AMT applied to the scope of the whole manufacturing process, especially the goals and effects achieved. All reflect that this is a practical technology that is applied to manufacturing and plays a major role in the development of manufacturing and national economy. With the rapid development of computer technology, the research progress of advanced manufacturing technology is also very fast. Chaos is being combined with many disciplines, resulting in new edge disciplines. Scholars gradually use the graphical characteristics of computers to analyze the chaotic characteristics. This paper further researches and uses the computer's imaging features to analyze the chaotic characteristics of advanced manufacturing technology. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： computer graphics

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An Automatic Generation of G^1 Curve Fitting of Arabic Characters

An Automatic Generation of G^1 Curve Fitting of Arabic Chara...

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international conference on computer graphics, imaging and visualization, CGIV

作者： F. Yahya J.M. Ali A.A. Majid A. Ibrahim FTMSK Universiti Teknologi Mara Shah Alam Malaysia Pengaiian Sains Matematik Universiti Sains Malaysia Malaysia

An Arabic font is difficult to fit as it is cursive in character, having varying curves and cusps. Here, the Arabic character is represented as an outline font fitted with G 1 rational Bezier cubic curves. As a method in reverse engineering, the Arabic character is created by way of digitizing an image that already exists and then fitting G 1 curves automatically to the outline of the digitized image. The outline font representation is done in several phases - contour extraction of font image, corner point's detection and lastly contour segment fitting. Image is considered as binary and boundary is obtained accordingly. Eigenvalues of covariance matrix and the concept of region of support are employed to search for the corners of the Arabic characters which are of varying degrees of smoothness. G 1 rational Bezier cubics, iteratively determined, are used in the last step. The weights are adjusted automatically to get curves that are as close as need be to the digitized data points. This technique can be extended to visualizing outlines of other contour-based images automatically

关键词： Character generation Curve fitting Image segmentation Phase detection Reverse engineering Eigenvalues and eigenfunctions Covariance matrix Data visualization Printers Image converters

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7th international conference on Augmented Reality, Virtual Reality, and computer graphics, AVR 2020

7th International Conference on Augmented Reality, Virtual R...

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7th international conference on Augmented Reality, Virtual Reality, and computer graphics, AVR 2020

ISBN: (纸本)9783030584641

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