Stereoacuity and Binocular Correspondence

立体视觉和双眼对应

基本信息

批准号：
7049413
负责人：
Suzanne P McKee
金额：
$ 37.94万
依托单位：
SMITH-KETTLEWELL EYE RESEARCH INSTITUTE
依托单位国家：
美国
项目类别：
财政年份：
1986
资助国家：
美国
起止时间：
1986-01-01 至 2007-12-31
项目状态：
已结题

项目摘要

DESCRIPTION (provided by applicant): Given the 3D geometry, stereopsis is probably less useful for specifying the layout of the visual scene than for supplying local information about surface shape and structure. The major objective of the proposed research is to explore how stereo-defined surfaces are encoded, and their role in stereo matching and stereo sensitivity. The first aim will examine the interaction between mechanisms that encode surface edges and mechanisms that encode fine surface relief. The second aim will examine surface encoding for continuous surfaces curved in depth. Recent studies show that disparity is generally encoded with respect to a local frame-of-reference, i.e. an adjacent surface, rather than with respect to the traditional head-centered or eye-centered coordinate system used to represent absolute disparities. The third aim will examine the significance of local frames-of-reference in the context of real surfaces and objects. The experiments in this proposal will examine stereo processing in normal human observers. About 5% of the population suffers from oculomotor (strabismus) or refractive (anisometropia) disorders that threaten the development of normal stereopsis. While most individuals can cope with the loss of stereopsis, abnormal binocular development is also frequently associated with a deficit in the acuity of one eye (amblyopia) - a more serious problem. These studies of normal observers will provide basic knowledge about normal stereopsis, a prerequisite for understanding abnormalities of the binocular system

描述（由申请人提供）：鉴于3D几何形状，立体声对于指定视觉场景的布局可能不如提供有关表面形状和结构的本地信息。拟议的研究的主要目的是探索立体定义表面的编码以及它们在立体声匹配和立体声敏感性中的作用。第一个目的将检查编码表面边缘的机制与编码精细表面浮雕的机制之间的相互作用。第二个目标将检查表面编码，以深入弯曲的连续表面。最近的研究表明，差异通常是相对于局部参考框架（即相邻表面）编码的，而不是相对于代表绝对差异的传统以头部为中心的或以眼神的为中心的坐标系。第三个目标将在真实表面和对象的背景下研究本地框架的重要性。该提案中的实验将检查正常人观察者中的立体声处理。约有5％的人口患有动眼病（斜视）或屈光（异脑膜异常值）疾病，威胁着正常立体的发展。尽管大多数人可以应付立体静脉曲张的丧失，但异常的双眼发育也经常与一只眼睛（弱视）的敏锐度相关 - 这是一个更严重的问题。这些对正常观察者的研究将提供有关正常立体的基本知识，这是理解双眼系统异常的先决条件