In addition to many fine department contributions, this issue contains several feature articles from the CG&A general queue on information visualization and visual analytics.
In addition to many fine department contributions, this issue contains several feature articles from the CG&A general queue on information visualization and visual analytics.
Since their introduction in seminal papers by Peachey and Perlin in 1985, volume textures have been a popular modeling tool. Not only are they useful for creating complex and consistent textures, they are needed for r...
详细信息
ISBN:
(纸本)3905673266
Since their introduction in seminal papers by Peachey and Perlin in 1985, volume textures have been a popular modeling tool. Not only are they useful for creating complex and consistent textures, they are needed for rendering weathering effects on various materials such as stone, as demonstrated by Dorsey et al. in 1999. While it is possible to generate volume textures purely procedurally, recent interest in 2D texture synthesis from example has spurred interest in synthesizing volumetric textures from physical example. I will present applications where volume textures from samples are of interest, some approaches to estimating them, and some early work on evaluating whether the synthesized volumes are correct.
The tutorial presents state-of-the-art visualization techniques inspired by traditional technical and medical illustrations. Such techniques exploit the perception of the human visual system and provide effective visu...
详细信息
ISBN:
(纸本)0780394623
The tutorial presents state-of-the-art visualization techniques inspired by traditional technical and medical illustrations. Such techniques exploit the perception of the human visual system and provide effective visual abstractions to make the visualization clearly understandable. Visual emphasis and abstraction has been used for expressive presentation from prehistoric paintings to nowadays scientific and medical illustrations. Many of the expressive techniques used in art are adopted in computergraphics, and are denoted as illustrative or non-photorealistic rendering. Different stroke techniques, or brush properties express a particular level of abstraction. Feature emphasis or feature suppression is achieved by combining different abstraction levels in illustrative rendering. Challenges in visualization research are very large data visualization as well as multi-dimensional data visualization. To effectively convey the most important visual information there is a significant need for visual abstraction. For less relevant information the dedicated image space is reduced to enhance more prominent features. The discussed techniques in the context of scientific visualization are based on iso-surfaces and volume rendering. Apart from visual abstraction, i.e., illustrative representation, the visibility of prominent features can be achieved by illustrative visualization techniques such as cut-away views or ghosted views. The structures that occlude the most prominent information are suppressed in order to clearly see more interesting parts. A different smart way to provide information on the data is using exploded views or other types of deformation. Furthermore intuitive feature classification via 3D painting and manipulation with the classified data including label placement is presented. Discussed non-photorealistic and illustrative techniques from visualization and graphics are shown from the perspective as tools for illustrators from medicine, botany, archeology
Development of multimedia modules and courses for engineering education present a significant opportunity to modernize curricula and improve the effectiveness of teaching and learning. In this article we review the va...
Development of multimedia modules and courses for engineering education present a significant opportunity to modernize curricula and improve the effectiveness of teaching and learning. In this article we review the various hardware and software components required to develop multimedia lessons and discuss the role of each component in the structure of a multimedia module. Examples of multimedia lessons developed for CD-ROM distribution by the Center for Multimedia Education and Technology (CAEME) at the University of Utah are described. These include multimedia lessons in electromagnetics, the Calculus Castle, and the Physics Museum. It is shown that although extensive resources and expertise are often needed to develop these modules, development software and associated technologies are readily available and educators are encouraged to take advantage of these opportunities to reform, restructure, and improve engineering education.
暂无评论