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作者： Fanta, Petr Charles University of Prague

The aim of this thesis is to create a real-time strategy game with artificial intelligence in 3d environment. The thesis includes theoretical analysis of combat real-time strategy games, methods for implementing artificial intelligence in this kind of games, and the basic knowledge of 3d environment implementation. A simple 3d real-time strategy game with artificial intelligence has been implemented as a part of this this thesis.

关键词： real-time strategy game 3d computer graphics artificial intelligence

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3d-Sutra-Interactive Analysis Tool for a Web Atlas of Scanned Sutra Inscriptions in China

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PHOTOGRAMMETRIC RECORd 2011年第136期26卷 488-505页

作者： Schmidt, Natalie Schuetze, Rainer Boochs, Frank Univ Appl Sci Mainz Germany

Buddhist stone inscriptions of the 8th to 12th centuries ad are important cultural assets of China that need to be documented, analysed and interpreted archaeologically, art-historically and linguistically. On the one hand, such Buddhist stone inscriptions have to be conserved for future generations, but on the other hand, further possibilities for analysing the data could be achieved if the inscriptions were made accessible to a wider community, for instance, for understanding of the historical growth of Buddhism in China. In this paper, innovative techniques for the documentation of stone inscriptions located in the province of Sichuan, in the south-west of China, are demonstrated. The tasks to be performed include capturing the stone inscriptions by using high precision measuring techniques to generate copies of the original inscriptions, together with processing of the data enabling improvement in the legibility of characters and thus aiding the interpretation of the inscriptions. The concept and features of image processing as applied to the captured inscriptions are outlined. In order to present the outcome to as many people as possible and to allow individual interpretations of the results of the stone inscription reconstruction, their current interpretation and additional 2d/3d maps are published within an interactive web platform.

关键词： 3d computer graphics 3d scanning computer vision image processing sutra web application

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Service-oriented, standards-based 3d geovisualization: Potential and challenges

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computerS ENVIRONMENT ANd URBAN SYSTEMS 2010年第6期34卷 484-495页

作者： Hildebrandt, dieter doellner, Juergen Univ Potsdam Hasso Plattner Inst D-14482 Potsdam Germany

The application of the architectural concept of service-oriented architectures (SOA) in combination with open standards when building distributed, 3d geovisualization systems offers the potential to cover and take advantage of the opportunities and demands created by the rise of ubiquitous computer networks and the Internet as well as to overcome prevalent interoperability barriers. In this paper, based on a literature study and our own experiences, we discuss the potential and challenges that arise when building standards-based, distributed systems according to the SOA paradigm for 3d geovisualization, with a particular focus on 3d geovirtual environments and virtual 3d city models. First, we briefly introduce fundamentals of the SOA paradigm, identify requirements for service-oriented 3d geovisualization systems, and present an architectural framework that relates SOA concepts, geovisualization concepts, and standardization proposals by the Open Geospatial Consortium in a common frame of reference. Next, we discuss the potential and challenges driven by the SOA paradigm on four different levels of abstraction, namely service fundamentals, service composition, interaction services, performance, and overarching aspects, and we discuss those driven by standardization. We further exemplify and substantiate the discussion in the scope of a case study and the image-based provisioning of and interaction with visual representations of remote virtual 3d city models. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： Service-oriented architecture Spatial data infrastructure Geovisualization 3d geovirtual environment Virtual 3d city model 3d computer graphics

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Capture and Processing of High Resolution 3d-data of Sutra Inscriptions in China

Capture and Processing of High Resolution 3D-Data of Sutra I...

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3rd International Conference Euro-Mediterranean Conference

作者： Schmidt, Natalie Boochs, Frank Schuetze, Rainer Univ Appl Sci Mainz Inst Spatial Informat & Surveying Technol Mainz Germany

ISBN: (纸本)9783642168727

Modern high resolution 3d-measuring techniques are widely used in quality control and industrial production, because they allow precise and reliable inspection of objects. Their potential to monitor surfaces, however, must not be restricted to industrial objects. Also in cultural heritage applications a detailed and reliable spatial description of surfaces is often useful and opens up new possibilities for conservation, analysis or presentation of objects. In the actual work we have considered Buddhistic stone inscriptions (8th-12th centuries) which are important cultural assets of China. They need to be documented, analyzed, interpreted and visualized archaeologically, art-historically and text-scientifically. On one hand such buddhistic stone inscriptions have to be conserved for future generations but on the other hand further possibilities for analyzing the data could be enabled when the inscriptions would be accessible to a larger community, for instance the understanding of the historical growth of Buddhism in China. In this article we show innovative techniques for the documentation and analysis of stone inscriptions located in the province of Sichuan - south-west of china. The stone inscriptions have been captured using high precision 3d-measuring techniques what produces exact copies of the original inscriptions serving as base for further processing tasks. Typical processing might be directed towards an improvement of the legibility of characters or may try to automatically detect individual letters, to automatically identify certain text passages or even to characterize the written elements with respect to a potential style of the monk or the executing stonemason. All these processing steps will support the interpretation of the inscriptions by the sinologists involved with the analysis and evaluation of the texts. The concept and features of the image processing applied on the captured inscription as well as the aims and the effect of an interpretation b

关键词： 3d scanning 3d computer graphics image processing Sutra template matching

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3d-SUTRA - INTERACTIVE ANALYSIS TOOL FOR A WEB- ATLAS OF SCANNEd SUTRA INSCRIPTIONS IN CHINA

3D-SUTRA - INTERACTIVE ANALYSIS TOOL FOR A WEB- ATLAS OF SCA...

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ISPRS-Commission V Mid-Term Symposium on Close Range Image Measurement Technique

作者： Schmidt, Natalie Schuetze, Rainer Boochs, Frank Univ Appl Sci Mainz Inst Spatial Informat & Surveying Technol I3mainz Mainz Germany

Buddhistic stone inscriptions (8th-12th centuries) are important cultural assets of China which need to be documented, analyzed, interpreted and visualized archaeologically, art-historically and text-scientifically. On one hand such buddhistic stone inscriptions have to be conserved for future generations but on the other hand further possibilities for analyzing the data could be enabled when the inscriptions would be accessible to a larger community, for instance the understanding of the historical growth of Buddhism in China could In this article we show innovative techniques for the documentation of stone inscriptions located in the province of Sichuan - south-west of china. The tasks to be performed comprise capturing of stone inscriptions by using high precision measuring techniques to generate copies of the original inscriptions and the processing of the data enabling the improvement of the legibility of characters and thus supporting the interpretation of the inscriptions. We show the concept and features of the image processing applied on the captured inscription. In order to present the outcome to a large community and to allow individual interpretations, the results of the stone inscription reconstruction, the interpretation and additional 2d / 3d maps are published within an interactive web platform.

关键词： cv 3d scanning 3d computer graphics image processing Sutra web application

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ACCELERATEd VIdEO ENCOdING USING RENdER CONTEXT INFORMATION

ACCELERATED VIDEO ENCODING USING RENDER CONTEXT INFORMATION

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IEEE International Conference on Image Processing

作者： Fechteler, Philipp Eisert, Peter Fraunhofer Heinrich Hertz Inst Image Proc Dept D-10587 Berlin Germany

ISBN: (纸本)9781424479948

In this paper, we present a method to speed up video encoding of GPU rendered 3d scenes, which is particularly suited for the efficient and low-delay encoding of 3d game output as a video stream. The main idea of our approach is to calculate motion vectors directly from the 3d scene information used during rendering of the scene. This allows the omission of the computationally expensive motion estimation search algorithms found in most of today's video encoders. The presented method intercepts the graphics commands during runtime of 3d computer games to capture the required projection information without requiring any modification of the game executable. We demonstrate that this approach is applicable to games based on Linux/OpenGL as well as Windows/directX. In experimental results we show an acceleration of video encoding performance of approximately 25% with almost no degradation in image quality.

关键词： 3d computer graphics Video Encoding Video Streaming Game Streaming Games on demand

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Building on Realism and Magic for designing 3d Interaction Techniques

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IEEE computer graphics ANd APPLICATIONS 2009年第6期29卷 22-33页

作者： Kulik, Alexander Bauhaus Univ Weimar Virtual Real Syst Grp Weimar Germany

Imagination-based interaction can complement reality-based interaction in the design of 3d user interfaces. This hybrid approach could lead to interface design guidelines that promote higher-level consistency, and thu... 详细信息

关键词： 3d computer graphics 3d interaction computer graphics human-computer interaction virtual reality

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An Electronic Paper Craft Modeling System for developing Geometric Sense

An Electronic Paper Craft Modeling System for Developing Geo...

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IEEE Region 10 Conference 2009

作者： Nishino, Hiroaki Hata, Jun-ichi Kagawa, Tsuneo Utsumiya, Kouichi Oita Univ Dept Comp Sci & Intelligent Syst Oita 8701192 Japan

ISBN: (纸本)9781424445462

3d computer graphics becomes a core technology for various applications such as scientific visualization, medical training and procedure, art, and entertainment. Geometric sense is a key skill for accurately understanding 3d information and designing relevant contents. We propose an electronic paper craft modeling system useful for fostering the basic geometric skill. The proposed system enables users to easily observe and manipulate regular polyhedron, the basic geometrical shapes found in various natural phenomena. 3d manipulations supported by the system give the users a feeling as if they are working with real paper craft model. Then, the system allows the user for gradually improving their skills for structurally analyzing the 3d virtual models. The paper elaborates the implementation method of the system and preliminary evaluation on how the proposed system can effectively support learning of basic geometry.

关键词： 3d computer graphics geometric modeling electronic paper craft learning support system

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OpenGL Shading Language 3rd Edition

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2009年

作者： Randi J. Rost Bill Licea-Kane dan Ginsburg John M. Kessenich Barthold Lichtenbelt Hugh Malan Mike Weiblen

ISBN: (纸本)0321637631;9780321637635

As the Red Book is known to be the gold standard for OpenGL, the Orange Book is considered to be the gold standard for the OpenGL Shading Language. With Randis extensive knowledge of OpenGL and GLSL, you can be assured you will be learning from a graphics industry veteran. Within the pages of the second edition you can find topics from beginning shader development to advanced topics such as the spherical harmonic lighting model and more. david Tommeraasen, CEO/Programmer, Plasma Software This will be the definitive guide for OpenGL shaders; no other book goes into this detail. Rost has done an excellent job at setting the stage for shader development, what the purpose is, how to do it, and how it all fits together. The book includes great examples and details, as well as good additional coverage of 2.0 changes! Jeffery Galinovsky, director of Emerging Market, Platform development, Intel Corporation The coverage in this new edition of the book is pitched just right to help many new shader-writers get started, but with enough deep information for the old hands. Marc Olano, Assistant Professor, University of Maryland This is a really great book on GLSLwell written and organized, very accessible, and with good real-world examples and sample code. The topics flow naturally and easily, explanatory code fragments are inserted in very logical places to illustrate concepts, and, all in all, this book makes an excellent tutorial as well as a reference. John Carey, Chief Technology Officer, C.O.R.E. Feature Animation OpenGL Shading Languageprovides a timely, thorough, and entertaining introduction to the only OpenGL ARB-approved high-level shading language in existence. Whether an expert or a novice, there are gems to be discovered throughout the book, and the reference pages will be your constant companion as you dig into the depths of the shading APIs. From algorithms to APIs, this book has you covered. Bob Kuehne, CEO, Blue Newt Software computer graphics and rendering tech

关键词： 3d computer graphics graphics Programming

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Power and area-efficient unified computation of vector and elementary functions for handheld 3d graphics systems

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IEEE TRANSACTIONS ON computerS 2008年第4期57卷 490-504页

作者： Nam, Byeong-Gyu Kim, Hyejung Yoo, Hoi-Jun Korea Adv Inst Sci & Technol Dept Comp Sci & Elect Engn Taejon 305701 South Korea

A unified computation method of vector and elementary functions is proposed for handheld 3d graphics systems. It unifies vector operations like vector multiply, multiply-and-add, divide, divide-by-square-root, and dot product and elementary functions like trigonometric, inverse trigonometric, hyperbolic, inverse hyperbolic, power (x(y) with two variables), and logarithm to an arbitrary base into a single four-way arithmetic platform. A number system called the fixed-point hybrid number system (FXP-HNS), which combines the fixed-point number system (FXP) and the logarithmic number system (LNS), is proposed for the power and area-efficient unification. Power and area-efficient logarithmic and antilogarithmic conversion schemes are also proposed for the data conversions between fixed-point and logarithmic numbers in the FXP-HNS and achieve 0.41 percent and 0.08 percent maximum conversion errors, respectively. The unified arithmetic unit based on the proposed schemes is presented with less than 6.3 percent operation error. Its fully pipelined architecture achieves single-cycle throughput with maximum four-cycle latency for all of the supported operations. Comparison results show that the proposed arithmetic unit achieves 30 percent power and 10.9 percent area reductions and runs two times faster than the previous approach.

关键词： computer arithmetic unified arithmetic unit vector operations elementary functions logarithmic number system 3d computer graphics handheld systems

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