The Experts below are selected from a list of 90336 Experts worldwide ranked by ideXlab platform
Nobuhito Saito - One of the best experts on this subject based on the ideXlab platform.
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a new strategic neurosurgical planning tool for brainstem cavernous malformations using interactive Computer Graphics with multimodal fusion images
Journal of Neurosurgery, 2012Co-Authors: Hirofumi Nakatomi, Harushi Mori, Akira Kunimatsu, Masaaki Shojima, Hiroshi Oyama, Minoru Tanaka, Nobuhito SaitoAbstract:Object In this study, the authors used preoperative simulation employing 3D Computer Graphics (interactive Computer Graphics) to fuse all imaging data for brainstem cavernous malformations. The authors evaluated whether interactive Computer Graphics or 2D imaging correlated better with the actual operative field, particularly in identifying a developmental venous anomaly (DVA). Methods The study population consisted of 10 patients scheduled for surgical treatment of brainstem cavernous malformations. Data from preoperative imaging (MRI, CT, and 3D rotational angiography) were automatically fused using a normalized mutual information method, and then reconstructed by a hybrid method combining surface rendering and volume rendering methods. With surface rendering, multimodality and multithreshold techniques for 1 tissue were applied. The completed interactive Computer Graphics were used for simulation of surgical approaches and assumed surgical fields. Preoperative diagnostic rates for a DVA associated with...
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prediction of surgical view of neurovascular decompression using interactive Computer Graphics
Neurosurgery, 2009Co-Authors: Hiroshi Oyama, Kyousuke Kamada, S Aoki, Kuni Ohtomo, Nobuhito SaitoAbstract:OBJECTIVE: To assess the value of an interactive visualization method for detecting the offending vessels in neurovascular compression syndrome in patients with facial spasm and trigeminal neuralgia. Computer Graphics models are created by fusion of fast imaging employing steady-state acquisition and magnetic resonance angiography. METHODS: High-resolution magnetic resonance angiography and fast imaging employing steady-state acquisition were performed preoperatively in 17 patients with neurovascular compression syndromes (facial spasm, n = 10; trigeminal neuralgia, n = 7) using a 3.0-T magnetic resonance imaging scanner. Computer Graphics models were created with Computer software and observed interactively for detection of offending vessels by rotation, enlargement, reduction, and retraction on a graphic workstation. Two-dimensional images were reviewed by 2 radiologists blinded to the clinical details, and 2 neurosurgeons predicted the offending vessel with the interactive visualization method before surgery. Predictions from the 2 imaging approaches were compared with surgical findings. The vessels identified during surgery were assumed to be the true offending vessels. RESULTS: Offending vessels were identified correctly in 16 of 17 patients (94%) using the interactive visualization method and in 10 of 17 patients using 2-dimensional images. These data demonstrated a significant difference (P = 0.015 by Fisher's exact method). CONCLUSION: The interactive visualization method data corresponded well with surgical findings (surgical field, offending vessels, and nerves). Virtual reality 3-dimensional Computer Graphics using fusion magnetic resonance angiography and fast imaging employing steady-state acquisition may be helpful for preoperative simulation.
Wolfgang Straser - One of the best experts on this subject based on the ideXlab platform.
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web based teaching of Computer Graphics concepts and realization of an interactive online course
International Conference on Computer Graphics and Interactive Techniques, 1998Co-Authors: Reinhard Klein, Frank Hanisch, Wolfgang StraserAbstract:Topics within Computer Graphics still cannot be adequatelypresented and explored with traditional teaching methodologies andtools. An integrative approach to combine lectures, examples,programming exercises, documentation, supported by a commonsophisticated interface, is greatly needed. In this paper, wediscuss and present the concept, realization, evaluation, andexperiences of a Computer Graphics course that was developed at ourlab to focus on this need. It is one of the first complete ComputerGraphics course on the World Wide Web combining course text,programmed examples, and course exercises in a common hypertextframework.
Edward Angel - One of the best experts on this subject based on the ideXlab platform.
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interactive Computer Graphics with webgl
2016Co-Authors: Edward Angel, Dave ShreinerAbstract:Interactive Computer Graphics with WebGL, Seventh Edition , is suitable for undergraduate students in Computer science and engineering, for students in other disciplines who have good programming skills, and for professionals interested in Computer animation and Graphics using the latest version of WebGL. Computer animation and Graphics are now prevalent in everyday life from the Computer screen, to the movie screen, to the smart phone screen. The growing excitement about WebGL applications and their ability to integrate HTML5, inspired the authors to exclusively use WebGL in the Seventh Edition of Interactive Computer Graphics with WebGL. Thisis the only introduction to Computer Graphics text for undergraduates that fully integrates WebGL and emphasizes application-based programming. The top-down, programming-oriented approach allows for coverage of engaging 3D material early in the course so students immediately begin to create their own 3D Graphics. Teaching and Learning Experience This program will provide a better teaching and learning experiencefor you and your students. It will help: Engage Students Immediately with 3D Material: A top-down, programming-oriented approach allows for coverage of engaging 3D material early in the course so students immediately begin to create their own Graphics. Introduce Computer Graphics Programming with WebGL and JavaScript: WebGL is not only fully shader-basedeach application must provide at least a vertex shader and a fragment shaderbut also a version that works within the latest web browsers.
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interactive Computer Graphics a top down approach with shader based opengl
2011Co-Authors: Edward Angel, Dave ShreinerAbstract:This book is suitable for undergraduate students in Computer science and engineering, for students in other disciplines who have good programming skills, and for professionals. Computer animation and Graphicsonce rare, complicated, and comparatively expensiveare now prevalent in everyday life from the Computer screen to the movie screen. Interactive Computer Graphics: A Top-Down Approach with Shader-Based OpenGL, 6e, is the only introduction to Computer Graphics text for undergraduates that fully integrates OpenGL 3.1 and emphasizes application-based programming. Using C and C++, the top-down, programming-oriented approach allows for coverage of engaging 3D material early in the text so readers immediately begin to create their own 3D Graphics. Low-level algorithms (for topics such as line drawing and filling polygons) are presented after readers learn to create Graphics.
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interactive Computer Graphics
2002Co-Authors: Edward AngelAbstract:From the Publisher: This book teaches beginners how to create interesting Computer Graphics. It takes a top-down approach that starts readers creating interesting Computer Graphics from the start using OpenGL. Interactive Computer Graphics, 3/e features a top-down, programming-oriented approach to Computer Graphics. Capitalizing upon this top-down and hands-on approach, the text quickly gets readers writing interesting 3D Graphics programs. Angel uses OpenGL, a Graphics library supported by most workstations, as well as the C and C++ programming languages, allowing readers to be aware of what is happening at the lowest levels of Computer-Graphics programming. This revision includes extensive 2-color art and Graphics to bring important concepts to life. This book is ideal for programmers looking for a hands-on introduction to Computer-Graphics programming that allows them to start writing 3D Graphics programs early on.
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interactive Computer Graphics a top down approach with opengl primer package 2nd edition
2001Co-Authors: Edward AngelAbstract:From the Publisher: B> Ed Angel's Interactive Computer Graphics, Second Edition is now accompanied by his new OpenGL: A Primer at no extra cost. This concise OpenGL: A Primer provides an introduction to OpenGL version 1.2 Interactive Computer Graphics, 2/e features a top-down, programming-oriented approach to Computer Graphics. Capitalizing upon this top-down and hands-on approach, the text quickly gets readers writing interesting 3D Graphics programs. Angel uses OpenGL, a Graphics library supported by most workstations, and the C programming language (which, like OpenGL, is not object-oriented), allowing readers to be aware of what is happening at the lowest levels of Computer-Graphics programming. OpenGL: A Primer presents the commands, provides examples, and discusses common beginners' pitfalls when talking about: two-dimensional programs; interaction and animation; three-dimensional programs; transformations; lights and materials; bits and pixels; texture mapping; curves and surfaces; as well as some advanced features. It presents a non-mathematical treatment of OpenGL, with an approach that gets students using OpenGL quickly by focusing on the Rhow to. This package is ideal for programmers looking for a hands-on introduction to Computer-Graphics programming and/or OpenGL that allows them to start writing 3D Graphics programs early on. Both books are also appropriate for use as references.
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interactive Computer Graphics a top down approach using opengl
1997Co-Authors: Edward AngelAbstract:Interactive Computer Graphicsis the only introduction to Computer Graphics text for undergraduates that fully integrates OpenGL and emphasizes application-based programming. Graphics Systems and Models; Graphics Programming; Input and Interaction; Geometric Objects and Transformations; Viewing; Shading; From Vertices to Fragments; Discrete Techniques; Programmable Shaders; Modeling; Curves and Surfaces; Advanced Rendering; Sample Programs; Spaces; Matrices; Synopsis of OpenGL Functions. MARKET: For all readers interested in Computer animation and Graphics using OpenGL.
Marco Antonio Gomezmartin - One of the best experts on this subject based on the ideXlab platform.
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fast application development to demonstrate Computer Graphics concepts
Technical Symposium on Computer Science Education, 2006Co-Authors: Pedro Pablo Gomezmartin, Marco Antonio GomezmartinAbstract:Computer Graphics concepts have a high visual component. For that reason, teaching this subject should be enriched with the use of small applications showing concepts like near and far plane or objects hierarchy in real time. However, their development is usually time consuming. In this paper we propose the use of an open source engine called Nebula to create such examples. We will show that Nebula applications are easy to develop and modify, presenting three small applications that help to explain important concepts in Computer Graphics curriculum.
Reinhard Klein - One of the best experts on this subject based on the ideXlab platform.
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web based teaching of Computer Graphics concepts and realization of an interactive online course
International Conference on Computer Graphics and Interactive Techniques, 1998Co-Authors: Reinhard Klein, Frank Hanisch, Wolfgang StraserAbstract:Topics within Computer Graphics still cannot be adequatelypresented and explored with traditional teaching methodologies andtools. An integrative approach to combine lectures, examples,programming exercises, documentation, supported by a commonsophisticated interface, is greatly needed. In this paper, wediscuss and present the concept, realization, evaluation, andexperiences of a Computer Graphics course that was developed at ourlab to focus on this need. It is one of the first complete ComputerGraphics course on the World Wide Web combining course text,programmed examples, and course exercises in a common hypertextframework.
