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，观众必须了解显示的图像中描述的规模和空间布局的准确感。 医学和科学可视化需要准确传达有关潜在感兴趣实体的大小，形状和位置的信息。 建筑和教育系统应使用户对真实或假设环境的规模以及该空间中对象的布置的整体了解。 仿真和培训系统需要允许用户执行与现实世界中相同或相似设施的任务。 尽管在计算机图形中获得了高度的感知保真度的重要性，但目前尚无既定方法来评估计算机图形图像如何将空间信息传达给观众。 缺乏这种方法是创建更有效的计算机图形系统的重要障碍，尤其是对于非娱乐应用程序。 在这个涉及计算机科学家与认知心理学家之间真正合作的多学科项目中，PI及其团队将开发一种量化感知忠诚度的方法，该方法既可以推广又与任务相关。 这项工作将是对感知到的负担的概念的首次系统使用，该概念被定义为对自己的动作能力的感知，以表征计算机图形中太空感知的准确性。 该方法涉及一种口头指示，表明在查看的环境中可以或不能执行特定的动作。 通过改变环境的空间结构，可以使用这些负担能力判断来探测观众能够感知与动作相关的空间信息的准确性。 结果是与动作相关的措施，而不是偏见，而不是诸如大小或距离之类的更原始特性的口头报告，并且适用于无法执行实际动作的非虚拟环境显示系统。 更广泛的影响：这项研究将导致一种方法论，该方法可显着影响尚未开发出的显示和渲染方法，并将导致范围特定系统的质量改进，这些系统超出了当前实践。 项目成果将适用于广泛的展示技术和渲染技术，并将减少与培训和更专业的任务绩效指标中发现的相关经验相关的混杂。 这项合作的性质将带来一个卓越的教育环境，从中，学生将获得深度和广度的经验，这使他们特别有资格解决科学和工程中的苛刻问题。 调查人员拥有涉及本科生和妇女研究的良好记录，并将通过这项工作继续这一传统。