HCC:Small: A New Method for Evaluating Perceptual Fidelity in Computer Graphics

HCC:Small：一种评估计算机图形学感知保真度的新方法

• 批准号: 0914488
• 负责人: William Thompson
• 金额: $ 49.89万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0914488&HistoricalAwards=false
• 关键词: HCC; Small; New; Method; Evaluating

For many applications of computer graphics, it is important that viewers perceive an accurate sense of the scale and spatial layout depicted in the displayed imagery. Medical and scientific visualizations need to accurately convey information about the size, shape, and location of entities of potential interest. Architectural and educational systems should give the user an overall sense of the scale of a real or hypothesized environment, along with the arrangement of objects in that space. Simulation and training systems need to allow users to perform tasks with the same or similar facility as in the real world. Despite the importance of achieving a high level of perceptual fidelity in computer graphics, there are as yet no established methodologies for evaluating how well computer graphics imagery conveys spatial information to a viewer. The lack of such methodologies is a significant impediment to creating more effective computer graphics systems, particularly for non-entertainment applications. In this multidisciplinary project involving genuine collaboration between computer scientists and cognitive psychologists, the PI and his team will develop a method for quantifying perceptual fidelity that is both generalizable and task-relevant. This work will be the first systematic use of the concept of perceived affordances, defined as the perception of one's own action capabilities, for characterizing the accuracy of space perception in computer graphics. The methodology involves a verbal indication that a particular action can or cannot be performed in a viewed environment. By varying the spatial structure of the environment, these affordance judgments can be used to probe how accurately viewers are able to perceive action-relevant spatial information. The result is a measure relevant to action, less subject to bias than verbal reports of more primitive properties such as size or distance, and applicable to non-virtual-environment display systems in which the actual action cannot be performed. Broader Impacts: This research will lead to a methodology that significantly impacts displays and rendering methods not yet developed, and will result in qualitative improvements in domain-specific systems that go beyond current practice. Project outcomes will be applicable across a broad range of display technologies and rendering techniques, and will reduce the confounds associated with training and prior experience found in more specialized task performance measures. The nature of this collaboration will lead to an exceptional educational environment, from which students will come away with a depth and breadth of experience which makes them especially well qualified to tackle demanding problems in science and engineering. The investigators have a well established record of involving undergraduates and women in research, and will continue that tradition with this work.

对于计算机图形的许多应用，重要的是观看者感知在所显示的图像中描绘的比例和空间布局的准确感觉。 医学和科学可视化需要准确地传达有关潜在感兴趣实体的大小、形状和位置的信息。 建筑和教育系统应该让用户对真实的或虚拟环境的规模有一个整体的感觉，沿着那个空间中物体的排列。 仿真和培训系统需要允许用户使用与真实的世界中相同或相似的设施来执行任务。 尽管在计算机图形中实现高水平的感知保真度的重要性，但还没有建立用于评估计算机图形图像向观众传达空间信息的方法。 缺乏这样的方法是创建更有效的计算机图形系统（特别是对于非娱乐应用）的重大障碍。 在这个涉及计算机科学家和认知心理学家之间真正合作的多学科项目中，PI和他的团队将开发一种量化感知保真度的方法，该方法既具有普遍性又与任务相关。 这项工作将是第一次系统地使用的概念，感知的启示，定义为一个人自己的行动能力的感知，在计算机图形学中的空间感知的准确性为特征。 该方法涉及一个口头指示，一个特定的动作可以或不能在一个查看的环境中执行。 通过改变环境的空间结构，这些可供性判断可以用来探测观众能够多准确地感知与动作相关的空间信息。 其结果是一个措施有关的行动，较少受到偏见比口头报告更原始的属性，如大小或距离，并适用于非虚拟环境显示系统中的实际行动不能执行。 更广泛的影响：这项研究将导致一种方法，显着影响尚未开发的显示和渲染方法，并将导致在特定领域的系统，超越目前的做法质量上的改进。 项目成果将适用于广泛的显示技术和渲染技术，并将减少与更专业的任务绩效测量中发现的培训和先前经验相关的混淆。 这种合作的性质将导致一个特殊的教育环境，学生将获得深度和广度的经验，使他们特别有资格解决科学和工程中的苛刻问题。 研究人员有一个良好的记录，涉及大学生和妇女的研究，并将继续这一传统的这项工作。