Welcome to Visualization '93, the fourth annual IEEE conference on visualization, held October 25-29, 1993, in San Jose, California. The Visualization Conference series is inspired and sponsored by the IEEE Computer Society Technical Committee on Computer Graphics in cooperation with ACM/SIGGRAPH.The role of visualization in science, engineering, medicine, and business has been expounded by many technical authors and the recent widespread enthusiasm in this area of research has prompted the development of visualization technology that is revolutionizing the way scientists do science, the way engineers design, and the way physicians deliver health care. The Visualization Conference series is concerned with all aspects of visualization, with a focus on interdisciplinary techniques. It explores how visualization is used to extract knowledge from data acquired in a variety of applications.The conference allows a dialogue to occur between the developers of visualization methods and visualization users. These proceedings contain the 41 full papers presented during the three-day technical paper program at the conference. These papers represent the state-of-the-art of visualization research and applications. The papers submitted this year were of high quality and it was a difficult task to decide which papers to accept for presentation. A very extensive review process helped in this regard, but still, many high quality papers could not be included because of space constraints. The reviewers provided detailed comments and corrections and met the very strict deadlines required by the review and publication schedules. They worked very hard and we wish to acknowledge their contribution.The second section of these proceedings includes the case studies portion of the conference. These papers deal with interdisciplinary issues of visualization, and demonstrate important applications, with emphasis on the transition from theory to practice. This unique case studies program is an integral and vital part of the conference and the high quality is due, in part, to the dedication and hard work of the Case Studies Chairs: Deborah Silver and Frits Post.The third section is devoted to the panels program portion of the conference. It includes summaries and position papers by the panels chairs and panelists. The panels portion of the conference covers many diverse issues in visualization, including techniques, tools, perception, and interaction. It took a great deal of work by the Panels Chairs, Lloyd Treinish and Jeff Beddow, and the slated panelists to make this very popular portion of the conference such a great success.The keynote speaker at the opening session is Frederic P. Brooks, who is the Kenan Professor of Computer Science at the University of North Carolina at Chapel Hill. In his talk entitled "A Vision for Visualization", he makes the point that Scientific Visualization is yet a discipline and he discuses some of the challenges and obligations that must be met along the way to becoming one. According to Brooks,"Scientific visualization surpasses all other computer graphics in the preeminent obligation for truthfulness in what it conveys." The keynote panel follows the keynote address. The panelists are Gregory McRae, Mark Ellisman, and Margaret Geller.A videotape of submitted animations has been prepared and is being distributed as a supplement to these proceedings. Thanks are due to Video Chairs Ed Council and Robert McDermott for preparing this indispensable appendix to these proceedings.
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