MONOCULAR CUES WITH NORMAL AND DEFICIENT STEREOPSIS

具有正常立体视觉和立体视觉缺陷的单目提示

基本信息

批准号：
3258971
负责人：
MYRON L BRAUNSTEIN
金额：
$ 3.57万
依托单位：
UNIVERSITY OF CALIFORNIA-IRVINE
依托单位国家：
美国
项目类别：
财政年份：
1983
资助国家：
美国
起止时间：
1983-07-01 至 1986-06-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/3258971
关键词：
binocular vision diagnosis quality /standard human subject vision disorders vision tests

项目摘要

Depth cues based on dynamic changes in the retinal projection supplement stereoscopic depth in normal vision, and may be especially important to persons lacking stereoscopic vision. The effectiveness of two dynamic monocular cues--velocity gradients and occlusion (the covering and uncovering of more distant objects by nearer objects)--will be studied for subjects with normal binocular vision and with dysfunctions in stereoscopic depth perception. A three part approach is proposed: (1) The first part addresses unresolved questions about the effectiveness of dynamic monocular cues for persons with normal stereoscopic vision. The first experiment contrasts the effectiveness of dynamic occlusion and perspective in providing relative distance information. The second experiment extends research on occlusion to scenes lacking distinct contours. The third experiment examines the trade--off between velocity, texture density, and observation time in determining the accuracy with which relative distance can be judged from a velocity gradient. (2) The second part addresses the question of whether the ability to perceive relative distance on the basis of dynamic monocular cues is affected by deficits in stereoscopic vision. Recent studies of dynamic cue effectiveness will be replicated with a clinical population. (3) The third part examines the use of monocular/stereoscopic conflict tests as measures of reliance on stereoscopic vision. These measures would supplement tests of stereoacuity. Subjects varying in stereoacuity will be asked to make relative depth judgments when velocity gradients or dynamic occlusion provide depth information opposite to that provided by stereoscopic cues. In addition to increasing understanding of dynamic monocular depth cues, this research should lead to improved methods for assessing the depth perception of persons lacking stereoscopic vision, methods for training such persons in the more effective use of monocular cues, and measures of the relative reliance on monocular as opposed to stereoscopic cues by persons during improvement or increased dysfunction in stereoacuity.

基于视网膜投影补充的动态变化的深度线索正常视觉中的立体深度，对于缺乏立体视觉的人。两种动态的有效性单眼线索——速度梯度和遮挡（覆盖和通过较近的物体发现较远的物体）——将被研究双眼视力正常但立体视功能障碍的受试者深度感知。提出了三部分方法： (1) 第一部分解决了有关动态单眼有效性的未解决问题具有正常立体视觉的人的提示。第一个实验对比动态遮挡和透视的有效性提供相对距离信息。第二个实验延伸对缺乏明显轮廓的场景进行遮挡的研究。第三个实验检验了速度、纹理密度和确定相对距离精度的观察时间可以从速度梯度来判断。 (2) 第二部分讨论是否能够感知相对距离的问题动态单眼线索的能力受到立体视觉缺陷的影响。最近关于动态提示有效性的研究将被复制临床人群。 (3) 第三部分考察了单眼/立体冲突测试作为依赖的衡量标准立体视觉。这些措施将补充测试立体视度。立体视度不同的受试者将被要求做出速度梯度或动态遮挡时的相对深度判断提供与立体线索提供的相反的深度信息。除了增加对动态单眼深度线索的理解之外，这项研究应该会改进评估深度的方法缺乏立体视觉的人的感知、训练方法这些人能够更有效地利用单眼线索和措施对单眼而非立体线索的相对依赖立体视觉功能障碍改善或增加的人。