BINOCULAR MATCHING, DISPARITY CHANNELING, AND STEREOPSIS

拟议的项目涉及心理物理和计算 人类立体视觉和双眼视觉的研究。 迄今为止， 计算研究集中在解决双目匹配 问题，而大多数的心理物理学都集中在立体 定位或立体形式识别。 这个广泛的目标 该项目是为了获得立体视觉过程的更好的理解 缓解这种不平衡。 拟议项目的具体目标是： 1)探讨双眼匹配的心理物理特性 过程中的人类视觉，并比较和对比这些属性与 那些立体定位。 2)探索人类视觉中视差通道的本质 系统 这包括：a）开发基于两者的计算模型 立体视觉的经典三通道理论和更近的理论 基于大量的信道。 B）使用两个模型测试上述两种类型的心理物理模型。 任务类型，那些涉及双目匹配和那些 涉及双目匹配和涉及立体匹配 本地化（c）重新评估临床状况的意义 立体视盲和立体异常 调查事务所 3)开发一个立体视觉的计算模型， 生物学上合理的前端， 关于两种类型的心理物理实验的预测， 涉及双目匹配（例如，相关检测）和那些 涉及立体定位（例如立体视敏度）。 心理物理学实验将涉及两种任务之一。 在第一类任务中，观察者需要做出判断 考虑动态随机元的间相关性 立体图，这将产生和显示在微型计算机上。 不需要对差异或深度进行判断。 在 第二类任务，要求观察者做出判断 涉及在几乎相同的刺激下的立体定位 条件 各种刺激变量对 这两种类型的判断将被分析，以区分 立体视觉的性质是由双眼的机制， 匹配从那些由立体的机制， 本地化

The proposed project involves both psychophysical and computational investigations of human stereopsis and binocular vision. To date, most computional investigations have focused on solving the binocular matching problems while most of the psychophysics have focused on stereoscopic localization or stereoscopic form recognition. The broad goal of this project is to gain a greater understanding of the process of stereopsis by alleviating this imbalance. The specific aims of the proposed project are: 1) To investigate the psychophysical properties of the binocular matching process in human vision and to compare and contrast these properties with those of stereoscopic localization. 2) To explore the nature of disparity channeling in the human visual system. This includes: a) Developing computational models based on both the classical 3-channel theories of stereopsis and more recent theories based on larger number of channels. b)Testing both of the above types of models psychophysical using two types of tasks, those that involve binocular matching and those that involve binocular matching and those that involve stereoscopic localization. c) Reassessing the meaning of the clinical conditions of stereoblindness and stereoanomaly in light of the results of the above investigations. 3) To develop a computational model of stereopsis that incorporates a biologically plausible front end and that can make quantitative predictions about two types of psychophysical experiments, those involving binocular matching (e.g. correlation detection) and those involving stereoscopic localization (e.g. stereoacuity). The psychophysical experiments will involve one of two kinds of tasks. In the first type of task, observers will be required to make judgments concerning the interoccular correlation of dynamic random element stereograms, which will be generated and displayed on a microcomputer. No judgments concerning disparity or depth will be required. In the second type of task, observers will be required to make judgments involving stereoscopic localization under nearly identical stimulus conditions. The differential effects of various stimulus variables on these two types of judgments will be analyzed to distinguish the properties of stereopsis that are governed by the mechanisms of binocular matching from those that are governed by the mechanisms of stereoscopic localization.