The transition from traditional graphics into computer graphics over the past decade has brought about a multitude of changes that graphics educator’s and other graphics professionals have had to address and incorporate. The ever evolving integration of Computer Aided Design (CAD) in architecture and engineering have revolutionized the design and documentation process. In the graphic communicat...

This interactive teaching gem shows the convolution concept for continuous signals and discrete samples. Signals occurring frequently in computer graphics education are predefined; others can be drawn or integrated easily. We explain how the material can be used for in-class demonstration and for homework, and describe the experiences we made with two courses on image processing and introductio...

As computer graphics evolves and expands into an essential component of many interactive systems, it is almost inevitable that the applications themselves become more complex and ambitious. In particular, the interactive system is rapidly becoming the intelligent system: Not only does the interface permit convenient access to the entities and operations of the application, but it also aids and ...

Ray-tracing is well-known as a general and flexible rendering algorithm that generates high-quality images. But in the past, raytracing implementations were too slow to be used in an interactive context. Recently, the performance of ray-tracing has been increased by over an order of magnitude, making it interesting as an alternative to rasterization-based rendering. We present a new rendering e...

Visualizations have always been a technique for planners to communicate their ideas. Today’s computer-generated visualizations and models are increasingly involved in environmental and spatial planning processes. These methods are used to achieve an improved knowledge of spatial structures and phenomena. Moreover they are used to communicate projects to the public, stakeholders and decision mak...

The goal of the National Computer Graphics Association is "to increase the productivity of industry and management in the United States through the use of computer graphics." The first four articles in this special issue, based on papers presented at NCGA '82 last June, reflect the association's continuing commitment to that goal. At the same time, they reflect an awareness-intensified since NC...