Visual Perception of Surfaces Defined Through Motion

通过运动定义的表面的视觉感知

• 批准号: 6548134
• 负责人: MYRON L BRAUNSTEIN
• 金额: $ 3.44万
• 依托单位: UNIVERSITY OF CALIFORNIA-IRVINE
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-15 至 2005-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6548134
• 关键词: attitude; attribution; behavioral /social science research tag; clinical research; computer simulation; cues; human subject; judgment; motion perception; psychophysics; space perception; visual depth perception; visual perception; visual stimulus

DESCRIPTION (provided by applicant)The surfaces visible in the 3-D environment are basic elements in our perceptual representation of the physical world, but the projection of a surface onto the retina does not directly specify depth relationships within the surface. One might think of recovering a description of a surface as recovering the depth coordinates, but the perception of surfaces by human observers includes higher-order relationships, such as local orientation and curvature. The perception of these higher-order properties may be based on recovered depth coordinates or may be based directly on information in the stimulus. The proposed research examines the information used in the perception of relative depth, orientation and curvature for 3-D surfaces that are specified primarily by motion. Three series of experiments are proposed. In the first series the sensitivity of observers for detecting differences in depth, slant and curvature will be compared using a common task-judging which part of an object is different from the other parts in the attribute of interest. The second series of experiments will examine how judgments of depth, slant and curvature are affected by characteristics of the area surrounding the point at which the surface attribute is specified, including effects of discontinuities in the surface, of the total area available and of the area over which the attribute has a constant value. The third series of experiments will determine the effects of features surrounding the area in which the attribute is specified, including contour changes, occluding contours and the presence of a background. In each case the experiments are intended to be informative about judgments of each surface attribute separately and about how the effects of the variables under investigation might differ for different surface attributes. Overall, this research is intended to provide an understanding of how surfaces present in the 3-D environment, or in dynamic images simulating a 3-D environment, are represented perceptually by the human observer. This is important for the study of behaviors that depend on surface perception, including object recognition, object manipulation and navigation through the environment. This research will be conducted primarily in Bulgaria as an extension of NIH Grant No. R01 EY12437.

描述（由申请人提供） 3D 环境中可见的表面是我们对物理世界的感知表示的基本元素，但表面在视网膜上的投影并不直接指定表面内的深度关系。人们可能会认为恢复表面的描述就是恢复深度坐标，但人类观察者对表面的感知包括高阶关系，例如局部方向和曲率。这些高阶属性的感知可以基于恢复的深度坐标或者可以直接基于刺激中的信息。拟议的研究检查了主要由运动指定的 3D 表面的相对深度、方向和曲率感知中使用的信息。提出了三个系列的实验。在第一个系列中，将使用一个常见的任务来比较观察者检测深度、倾斜和曲率差异的敏感度——判断物体的哪一部分与感兴趣的属性中的其他部分不同。第二系列实验将研究指定表面属性的点周围区域的特征如何影响深度、倾斜和曲率的判断，包括表面不连续性、可用总面积和面积的影响在此范围内，属性具有恒定值。第三系列实验将确定指定属性的区域周围特征的影响，包括轮廓变化、遮挡轮廓和背景的存在。在每种情况下，实验的目的是分别提供关于每个表面属性的判断的信息，以及关于所研究的变量的影响对于不同表面属性可能如何不同的信息。总体而言，这项研究旨在了解人类观察者如何感知 3D 环境或模拟 3D 环境的动态图像中呈现的表面。这对于研究依赖于表面感知的行为非常重要，包括物体识别、物体操纵和环境导航。这项研究将主要在保加利亚进行，作为 NIH 拨款号 R01 EY12437 的延伸。