用心灵之眼看世界

Diana Phillips Mahoney
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引用次数: 0

摘要

在过去的四分之一个世纪里,计算机图形学的飞速发展使我们的电脑屏幕上充斥着太多的视觉信息,我们不知道该怎么处理。曾经需要超级计算机才能计算的模拟现在可以在桌面工作站上运行,电影、广播和互联网应用程序的高端动画和特效可以在几分钟和几小时内完成,而不是几天、几周和几个月。但是,虽然摩尔定律兑现了它的承诺,即更快的处理器和更大的存储和内存容量,但这些进步并没有帮助我们掌握电脑屏幕上图像的各个方面。事实上,在某些情况下,新技术允许我们产生的庞大数据量实际上削弱了我们“看到”重要信息的能力。为了处理视觉数据过载,同时也为了从中获益,越来越多的计算机图形学研究人员和实践者将目光从数据的视觉表示转向研究我们如何感知这些信息。这些努力的最终目标是生成补充人类感知过程的图像,以便尽可能有效地传达视觉数据。尽管感知问题最近在视觉计算社区中受到了很多关注,但它们对计算机图形学来说并不新鲜。事实上,康奈尔大学计算机图形实验室的研究员Jim Ferwerda教授说,“不管他们是否意识到这一点,动画和可视化设计师一直在使用基于感知的东西。他们使用的色彩空间、NTSC标准、JPEG、MPEG、显示设备——都源于感知。”
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seeing With the Mind’s Eye
The rapid-fire advances that have defined computer graphics over the past quarter century have filled our computer screens with more visual information than we know what to do with. Simulations that once required supercomputer power to calculate are now running on desktop workstations, and high-end animations and special effects for film, broadcast, and Internet applications are being churned out in minutes and hours rather than days, weeks, and months. But while Moore's law has delivered on its promise of ever-faster processors and greater storage and memory capacity, these advances have done little to help us grasp all aspects of the images on our computer screens. In fact, in some cases, the sheer volume of data that the new technologies allow us to generate actually undermines our ability to "see" important information. In an effort not only to deal with the visual data overload, but also to benefit from it, a growing number of computer graphics researchers and practitioners are focusing their sights beyond the visual representations of data toward the study of how we perceive such information. The ultimate goal of these efforts is to generate images that complement human perceptual processes in order to communicate the visual data as effectively as possible. Although perception issues have received a lot of attention in the visual computing community recently, they are not really new to computer graphics. In fact, says professor Jim Ferwerda, a researcher in the Computer Graphics Laboratory at Cornell University, "whether or not they realize it, animation and visualization de signers use perceptually based stuff all of the time. The color spaces they use, the NTSC standard, JPEG, MPEG, display devices-all have roots in perception."
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