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Texture Synthesis with Prioritized Pixel Re-synthesis

Journal of information science and Engineering 2009年第2期25卷 389-402页

作者：嚴崇仁李同益 Computer Graphics Group/Visual System Laboratory Department of Computer Science and Information Engineering National Cheng Kung University

In this paper, we propose a new patch-based texture synthesis method. The core of the proposed method consists of two main components: (1) a feature-weighted similarity measurement to search for the best match and (2) a dynamically prioritized-based pixel re-synthesis to reduce discontinuity at the boundary of adjacent patches. Examples and experimental comparisons with other previous methods are demonstrated to verify the usefulness of our proposed method. In addition, we enhance the proposed method with a view warping technique to better synthesize non-frontal-parallel textures (NFPTs) that can not be synthesized well by traditional texture synthesis methods.

关键词： patch-based texture synthesis, prioritized-based pixel re-synthesis, feature- weighted, best match, discontinuity, frontal-parallel (FP) and non-frontal-parallel (NFP), view-warping

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Automatic viewing control for 3D direct manipulation 92

Automatic viewing control for 3D direct manipulation

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Proceedings of the 1992 Symposium on interactive 3D graphics

作者： Phillips, Cary B. Badler, Norman I. Granieri, John Computer Graphics Research Laboratory Department of Computer and Information Science University of Pennsylvania Philadelphia 19104-6389 PA United States Pacific Data Images 1111 Karlstad Dr Sunnyvale 94089 CA United States

ISBN: (纸本)0897914678

This paper describes a technique for augmenting the process of 3D direct manipulation by automatically finding an effective placement for the virtual camera. Many of the best techniques for direct manipulation of 3D geometric objects are sensitive to the angle of view, and can thus require that the user coordinate the placement of the viewpoint during the manipulation process. In some cases, this process can be automated. This means that the system can automatically avoid degenerate situations in which translations and rotations are difficult to perform. The system can also select viewpoints and viewing angles which make the object being manipulated visible, ensuring that it is not obstructed by other objects. © 1992 ACM.

关键词： interactive computer graphics

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Enhancing the Top Level Visualization Ontology

Enhancing the Top Level Visualization Ontology

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作者： Pérez, Alberto Morell Risquet, Carlos Pérez Gómez, Jorge Marx Department of Computer Science Computer Graphics Laboratory Central University of Las Villas Santa Clara Cuba Department of Computing Science Business Information Systems I / VLBA Carl von Ossietzky University Oldenburg Oldenburg Germany

ISBN: (纸本)9789728939229

One purpose of the Top Level Visualization Ontology is to provide a common vocabulary to describe visualization data, processes, and products. However, there are two aspect where its expressiveness is poor: the models of the visualization process and the data used on it. The aim of this paper is to describe some modifications of this ontology which lead to a better representation of the visualization process and data models, and facilitate the accommodation of new models. A detailed description of the new ontology's components is given. © 2010 IADIS.

关键词： Visualization

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Visualization tools for industrial design problems applied to electron optics

Visualization tools for industrial design problems applied t...

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Three-Dimensional Visualization and Display Technologies 1989

作者： Alexander, J. Bechis, D. Winarsky, N. Alonso, R. Laur, D. Applied Mathematics and Scientific Computing David Sarnoff Research Center PrincetonNJ08540 United States Department of Computer Science Princeton University PrincetonNJ08544 United States Interactive Computer Graphics Laboratory Princeton University PrincetonNJ08544 United States

At the David Sarnoff Research Center there exists a long standing research effort in support of the design of electron optic devices. The design process for such devices - the color high definition picture tube being the most recent and most outstanding example - involves the generation of very large volumes of data, from both simulation and experimentation. The goal of the design process is to simultaneously optimize performance parameters such as resolution, brightness, contrast and color purity, subject to manufacturing constraints, while varying the geometry or operating conditions of the electron gun or magnetic deflection system. To make effective use of this multi-dimensional information requires visualization tools to aid designers in exploring the design space. In this paper, we describe in detail the nature of the interactive graphics tools we have developed. After a brief overview of the optical design process, we sketch the details of the engineering database, which contains the simulation and experimentation results. We then present "general use" visualization tools which can be applied to many engineering fields to manipulate arrays of data. We also describe paradigms for using these tools to perform constrained optimization. Finally, we present a prototype visual searcher for the design-space, i.e., a tool that allows designers to visually search through the design database and ask "what-if" type questions. © 1989 SPIE. All rights reserved.

关键词： Electron guns

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Fast motion planning for anthropometric figures with many degrees of freedom

Fast motion planning for anthropometric figures with many de...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： W. Ching N. Badler Computer Graphics Research Laboratory Department of Computer and Information Science University of Pennsylvania Philadelphia PA USA

The authors discuss a class of robots which resemble the human structure. They are characterized by having a torso, two manipulator arms, a head mounted with vision system, and a lower body which is either a transport unit or legs. The total number of degrees-of-freedom involved is usually fairly large for these robots. An efficient motion planning algorithm for this type of robot is an aid to the achievement of task level programming. An efficient algorithm is presented that has successfully computed collision-free motions for anthropometric figures with many degrees of freedom within a cluttered environment.< >

关键词： Orbital robotics Motion planning Humanoid robots Arm Robot programming Manipulators Humans Torso Leg Weapons

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Solid model edit distance: a multi-application and multi-level schema for CAD model retrieval

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computer Aided Drafting,Design and Manufacturing 2017年第1期27卷 22-38页

作者： Wang Bin Hu Kaimo Li Dong Zhang Hui School of Software Tsinghua University Tsinghua National Laboratory for Information Science and Technology Department of Computer Graphics Technology Purdue University

We present the solid model edit distance(SMED),a powerful and flexible paradigm for exploiting shape similarities amongst CAD *** is designed to measure the magnitude of distortions between two CAD models in boundary representation(B-rep).We give the formal definition by analogy with graph edit distance,one of the most popular graph matching *** avoid the expensive computational cost potentially caused by exact computation,an approximate procedure based on the alignment of local structure sets is provided in *** order to verify the flexibility,we make intensive investigations on three typical applications in manufacturing industry,and describe how our method can be adapted to meet the various ***,a multilevel method is proposed to make further improvements of the presented algorithm on both effectiveness and efficiency,in which the models are hierarchically segmented into the configurations of *** results show that SMED serves as a reasonable measurement of shape similarity for CAD models,and the proposed approach provides remarkable performance on a real-world CAD model database.

关键词： CAD model retrieval solid model edit distance graph edit distance boundary representation

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Multi-resolution modeling in collaborative design

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18th International Symposium on computer and information sciences, ISCIS 2003

作者： Han, Junghyun Kim, Taeseong Cera, Christopher D. Regli, William C. Computer Graphics Laboratory School of Information and Communications Engineering Sung Kyun Kwan University Suwon440-746 Korea Republic of Geometric and Intelligent Computing Laboratory Department of Computer Science Drexel University PhiladelphiaPA19104 United States

ISBN: (纸本)3540204091

This paper provides a framework for information assurance within collaborative design, based on a technique we call role-based viewing. Such rolebased viewing is achieved through integration of multi-resolution geometry and security models. 3D models are geometrically partitioned, and the partitioning is used to create multi-resolution mesh hierarchies. Extracting an appropriately simplified model suitable for access rights for individual designers within a collaborative design environment is driven by an elaborate access control mechanism. © Springer-Verlag Berlin Heidelberg 2003.

关键词： Access control

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Reports of the AAAI 2011 fall symposia

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AI Magazine 2012年第1期33卷 71-78页

作者： Blisard, Sam Carmichael, Ted Ding, Li Finin, Tim Frost, Wende Graesser, Arthur Hadzikadic, Mirsad Kagal, Lalana Kruijff, Geert-Jan M. Langley, Pat Lester, James McGuinness, Deborah L. Mostow, Jack Papadakis, Panagiotis Pirri, Fiora Prasad, Rashmi Stoyanchev, Svetlana Varakantham, Pradeep Interactive Systems Section Naval Research Laboratory Washington DC United States Department of Software and Information Systems University of North Carolina Charlotte United States Qualcomm Inc. United States Department of Computer Science and Electrical Engineering University of Maryland Baltimore County United States Department of Psychology Institute of Intelligent Systems University of Memphis United States Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology United States Germany Department of Computer Science and Engineering Arizona State University Tempe AZ United States Department of Computer Science North Carolina State University United States Department of Computer Science and Cognitive Science Rensselaer Polytechnic Institute United States School of Computer Science Carnegie Mellon University United States Department of Informatics and Systems University of Sapienza Rome Italy Department of Informatics and Systems ALCOR Lab University of Sapienza Rome Italy Department of Health Informatics and Administration University of Wisconsin-Milwaukee United States Columbia University United States School of Information Systems Singapore Management University Singapore Singapore

The Association for the Advancement of Artificial Intelligence was pleased to present the 2011 Fall Symposium Series, held Friday through Sunday, November 4-6, at the Westin Arlington Gateway in Arlington, Virginia. The titles of the seven symposia are as follows: (1) Advances in Cognitive Systems;(2) Building Representations of Common Ground with Intelligent Agents;(3) Complex Adaptive Systems: Energy, information, and Intelligence;(4) Multiagent Coordination under Uncertainty;(5) Open Government Knowledge: AI Opportunities and Challenges;(6) Question Generation;and (7) Robot-Human Teamwork in Dynamic Adverse Environments. The highlights of each symposium are presented in this report. Copyright © 2012, Association for the Advancement of Artificial Intelligence. All rights reserved.

关键词： Intelligent agents

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Depth-Awareness in a System for Mixed-Reality Aided Surgical Procedures 15th

Depth-Awareness in a System for Mixed-Reality Aided Surgical...

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15th International Conference on Intelligent Computing, ICIC 2019

作者： Sylos Labini, Mauro Gsaxner, Christina Pepe, Antonio Wallner, Juergen Egger, Jan Bevilacqua, Vitoantonio Institute for Computer Graphics and Vision Faculty of Computer Science and Biomedical Engineering Graz University of Technology Graz Austria Computer Algorithms for Medicine Laboratory Graz Austria Department of Electrical and Information Engineering Polytechnic University of Bari Bari Italy Department of Oral and Maxillofacial Surgery Medical University of Graz Graz Austria

ISBN: (纸本)9783030267650

computer-assisted surgery is a trending topic in research, with many different approaches which aim at supporting surgeons in the operating room. Existing surgical planning and navigation solutions are often considered to be distracting, unintuitive or hard to interpret. In this work, we address this issue with an approach based on mixed reality devices like Microsoft HoloLens. We assess the depth sensing capabilities of Microsoft HoloLens, and the potential benefit they could bring to computer-assisted surgery applications. © 2019, Springer Nature Switzerland AG.

关键词： Mixed reality

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A novel semi-blind-and-semi-reversible robust watermarking scheme for 3D polygonal models

A novel semi-blind-and-semi-reversible robust watermarking s...

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作者： Lin, Chao-Hung Chao, Min-Wen Liang, Chan-Yu Lee, Tong-Yee Department of Geomatics National Cheng-Kung University No. 1 Ta-Hsueh Road Tainan 701 Taiwan Computer Graphics Group/Visual System Laboratory Department of Computer Science and Information Engineering National Cheng-Kung University No. 1 Ta-Hsueh Road Tainan 701 Taiwan

We introduce a novel semi-blind-and-semireversible robust watermarking scheme for three-dimensional (3D) polygonal models. The proposed approach embeds watermarks in the significant features of 3D models in a spread-spectrum manner. This novel scheme is robust against a wide variety of attacks including rotation, translation, scaling, noise addition, smoothing, mesh simplifications, vertex reordering, cropping, and even pose deformation of meshes. To the best of our knowledge, the existing approaches including blind, semi-blind, and non-blind detection schemes cannot withstand the attack of pose editing, which is a very common routine in 3D animation. In addition, the watermarked models can be semi-reversed (i.e., the peak signal-to-noise ratio (PSNR) of the recovered models is greater than 90 dB in all experiments) in semi-blind detection scheme. Experimental results show that this novel approach has many significant advantages in terms of robustness and invisibility over other state-of-the-art approaches. © Springer-Verlag 2010.

关键词： Watermarking

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