权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Improvements in 3D Visualization for Vision Research

视觉研究 3D 可视化的改进

基本信息

批准号：
8073465
负责人：
MARTIN S BANKS
金额：
$ 28.75万
依托单位：
UNIVERSITY OF CALIFORNIA BERKELEY
依托单位国家：
美国
项目类别：
财政年份：
2002
资助国家：
美国
起止时间：
2002-09-15 至 2013-04-30
项目状态：
已结题

项目摘要

DESCRIPTION (provided by applicant): Three-dimensional (3d) displays have become very important for many applications including vision research, operation of remote devices, medical imaging, surgical training, scientific visualization, virtual prototyping, and more. It is important in these applications for the graphic image to create a faithful impression of the 3d structure of the object or scene being portrayed. Unfortunately, 3d displays often yield less perceived depth or even distorted percepts compared with real scenes. Additionally, the uncoupling of vergence and accommodation required by 3d displays frequently causes viewer discomfort and fatigue. We received four years of funding to investigate these problems with conventional 3d displays and to develop new displays to minimize those problems. We achieved all of the stated goals and now seek funding to continue the technical development of the display and to use it to conduct basic and applied vision research. There are five Specific Aims. 1. Continue the construction, development, and evaluation of multi-plane 3d displays using the switchable lens technology developed in the first grant period. 2. Investigate how blur and accommodation affect stereopsis. Examine how the ability to binocularly fuse and interpret complex images is affected by the correlation between disparity-specified depth and blur and accommodative signals. Investigate the role of blur and accommodation in the perceived distortions observed with stereoscopic photographs and cinema. Develop more accurate models of these phenomena based on the experimental results. 3. Investigate the role of blur and accommodative signals in the perception of size and distance. Examine how the orientation of the blur gradient relative to the depth gradient affects the so-called tilt-shift miniaturization effect. Examine how variation in blur relative to local depth variations and how active accommodation affect size and distance perception. 4. Re-examine some well-known effects in the structure-from-motion and shape-from-shading literatures to determine if they are caused in part by conflicting blur and accommodative information. If they are, develop more accurate models of these phenomena based on the experimental results. 5. Evaluate the benefits of providing stereoscopic and near-correct focus cues in a medical-imaging application. Assess the ability to track fibers in white-mater tracts from DTI data using 2d, conventional 3d, and multi-plane 3d displays. Measure perceptual accuracy, time required, and visual fatigue and discomfort in the three types of displays. PUBLIC HEALTH RELEVANCE The proposed research will investigate the perception of displayed visual information. It involves the construction and evaluation of new display technology, optics techniques, and graphics methods. All of these technical developments will be useful in creating three-dimensional displays with near-correct focus cues which would allow the users of virtual reality to see the 3d structure of simulated scenes more correctly. This would have clear benefit for many uses of virtual reality such as medical imaging, minimally invasive surgery, telesurgery, medical training, and scientific visualization. This may also yield side benefits such as correction for presbyopia.

描述(申请人提供)：三维(3D)显示器对于许多应用变得非常重要，包括视觉研究、远程设备操作、医学成像、外科培训、科学可视化、虚拟原型等。在这些应用中，重要的是图形图像创建对所描绘的对象或场景的3D结构的忠实印象。不幸的是，与真实场景相比，3D显示往往产生较少的感知深度，甚至是扭曲的感知。此外，3D显示器所要求的聚焦和调节的分离经常导致观看者的不适和疲劳。我们获得了四年的资金，用来研究传统3D显示器的这些问题，并开发新的显示器，以最大限度地减少这些问题。我们实现了所有规定的目标，现在正在寻求资金，以继续显示器的技术开发，并将其用于进行基础和应用视觉研究。有五个具体目标。1.使用在第一批资助期间开发的可切换透镜技术，继续建造、开发和评估多平面3D显示器。2.研究模糊和调节对立体视觉的影响。研究双目融合和解释复杂图像的能力如何受到视差指定的深度与模糊和调节信号之间的相关性的影响。调查模糊和适应在立体照片和电影中观察到的可感知的扭曲中的作用。根据实验结果开发出更准确的这些现象模型。3.研究模糊和调节信号在大小和距离知觉中的作用。检查模糊渐变相对于深度渐变的方向如何影响所谓的倾斜移位小型化效果。研究模糊相对于局部深度变化的变化，以及主动调节如何影响大小和距离感知。4.重新审视结构从运动到形状的文献中的一些众所周知的影响，以确定它们是否部分是由相互冲突的模糊和调节信息引起的。如果是，根据实验结果开发出更准确的这些现象模型。5.评估在医学成像应用中提供立体和接近正确的焦点提示的好处。评估使用2D、常规3D和多平面3D显示器从DTI数据跟踪白质纤维束中纤维的能力。测量三种类型显示器的感知准确性、所需时间以及视觉疲劳和不适。公共卫生相关性拟议的研究将调查对显示的视觉信息的感知。它涉及到新的显示技术、光学技术和图形方法的构建和评估。所有这些技术发展都将有助于创建具有近乎正确的焦点提示的三维显示，这将使虚拟现实的用户能够更正确地看到模拟场景的三维结构。这将对虚拟现实的许多用途产生明显的好处，例如医学成像、微创手术、远程外科手术、医疗培训和科学可视化。这也可能产生副作用，如矫正老花眼。