Acuity and Hyperacuity During Image Motion

图像运动期间的敏锐度和超敏锐度

• 批准号: 8820229
• 负责人: Stanley Klein
• 金额: $ 14.72万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-02-15 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8820229&HistoricalAwards=false
• 关键词: Acuity; Hyperacuity; During; Image; Motion

Normal visual acuity, that is, the minimum separation required to resolve two features (about 1 min of arc), is fairly well understood. Another class of tasks involves spatial localization of features, the so-called hyperacuities, with thresholds of 1 to 10 seconds of arc. Several models have recently shown how the visual system can achieve this astonishing performance. The demonstration that visual acuity and hyperacuity are relatively unaffected by retinal image motion at velocities ranging up to 3 deg/sec causes problems for many of these models. The importance of achieving good acuity in the presence of image motion should not be underestimated. The task of compensating for retinal motion is likely to be one of the main problems to be solved by the mechanisms of early vision. The eyes are constantly moving, so in order to preserve image quality there must have been strong evolutionary pressures to solve this problem. Dr. Stanley Klein is a leading investigator in the area of spatial vision. Dr. Klein's research has two goals. The first is to understand how high levels of acuity are maintained during image motion. The second goal is to use image motion to isolate distinct localization cues for a variety of hyperacuity tasks. The experiments will test predictions from several models of acuity and hyperacuity. The results of the proposed experiments will also provide additional constraints on a model of human spatial localization for stationary stimuli being developed by Dr. Klein.

正常视力，即最小间距 需要解决两个功能（约1弧分钟），是相当 很好理解。另一类任务涉及空间 特征的局部化，即所谓的超敏， 1到10弧秒的阈值。几个模型有 最近展示了视觉系统是如何实现这一惊人的 性能证明视力和超敏度 相对不受视网膜图像运动的影响 对于这些模型中的许多模型，高达3度/秒的范围会引起问题。 在存在以下情况时获得良好视力的重要性 不应低估图像运动。的任务 补偿视网膜运动可能是主要的 早期视力机制需要解决的问题。眼中 不断移动，因此为了保持图像质量 一定有强大的进化压力来解决这个问题 问题. 斯坦利·克莱因博士是该领域的主要研究者， 空间视觉克莱因博士的研究有两个目标。一是 为了了解高水平的敏锐度是如何保持在 图像运动第二个目标是利用图像运动来分离 不同的定位线索的各种超敏任务。 这些实验将测试几个模型的预测， 敏锐和超敏锐。拟议实验的结果 还将对人类模型提供额外的约束 静止刺激的空间定位是由 克莱恩医生。