PERCEPTION OF 3D OBJECTS IN DYNAMIC VISUAL

动态视觉中 3D 物体的感知

• 批准号: 6489853
• 负责人: MYRON L BRAUNSTEIN
• 金额: $ 25.55万
• 依托单位: UNIVERSITY OF CALIFORNIA-IRVINE
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6489853
• 关键词: clinical research; computer human interaction; computer simulation; form /pattern perception; human subject; judgment; motion perception; neural information processing; neuropsychological tests; performance; sensory discrimination; visual depth perception; visual fields; visual stimulus

The perception of the 3D environment involves several levels of analysis including the perception of the overall depth of a scene, the perception of the layout (relative positions) of objects and surfaces in the scene, and the perception of properties of objects, such as depth and shape. The information at each level may be viewer-centered, indicating absolute or relative distances form the observer, or object-centered, indicating distances relative to objects or to the scene. The proposed research considers the integration of visual information for the perception of 3D sciences according to these two dimensions-level of analysis (scene, layout, and object) and type of information (viewer-centered or object- centered). Specifically, it examines how this integration is affected by interactions of the observer with the scene-determined by the perceptual tasks the observer is asked to perform, the organization of information within the scene for performing these tasks, and whether or not the observer actively explores the scene. The proposed research is divided into four series of experiments. The first series will consider how four types of motion-translation and rotation of an object and of the surrounding scene-determine the perceived depth of a 3D objects in a dynamic scene. The second series will assess the effect of a prior task involving judgements of scene depth, layout, or object depth on subsequent performance of a task at a different level of the hierarchy. The third series will examine how the introduction of uniform regions connecting objects at different depths in a scene affecting judgements about objects and regions in the scene. The fourth series of experiments, to be conducted in a virtual reality laboratory, will examine the effects of active observation (e.g., walking within a scene) on the accuracy of distance judgements, when the optic flow information for active and passive observers is exactly matched. An integrated approach to the study of the perception of 3D scenes is important for the development of perceptual models concerned with the analysis of 3D scenes. Understanding how interactions between the observer and information in the scene affects integration of different types of information (viewer-centered and object- centered) and different levels of analysis (scene, layout and object) should be important for research in areas of visual cognition concerned with 3D objects and scenes, especially research on object recognition and visual attention.

3D环境的感知涉及几个分析 包括对场景整体深度的感知，感知 场景中对象和表面的布局（相对位置）的布局（相对位置） 以及对物体属性的感知，例如深度和形状。这 每个级别的信息都可以以查看器为中心，表明绝对或 相对距离构成观察者或以对象为中心的，表明 相对于物体或场景的距离。拟议的研究 考虑到3D感知的视觉信息的集成 根据这两个维度分析的科学（场景， 布局，对象）和信息类型（以查看器为中心或对象 - 中心）。具体而言，它研究了这种集成如何受到 观察者与感知确定的场景确定的相互作用 要求观察者执行的任务，信息组织 在场景中执行这些任务，以及是否 观察者积极探索场景。拟议的研究分为 分为四个系列实验。第一个系列将考虑如何四个 运动和旋转的类型和对象的旋转 确定场景确定的3D对象的感知深度 动态场景。第二个系列将评估先前任务的效果 涉及场景深度，布局或对象深度的判断 在层次结构的不同级别的任务执行。第三 系列将研究如何引入统一区域连接 场景中不同深度的对象影响对象的判断 和现场地区。第四系列实验，是 在虚拟现实实验室中进行的 主动观察（例如，在场景中行走）的准确性 距离判断，当主动的光流信息和 被动观察者完全匹配。研究的综合方法 3D场景的感知对于发展很重要 与3D场景分析有关的感知模型。理解 观察者与场景中信息之间的相互作用如何影响 集成不同类型的信息（以查看器为中心和对象 - 集中）和不同级别的分析（场景，布局和对象） 对于视觉认知领域的研究应该很重要 具有3D对象和场景，尤其是关于对象识别和的研究 视觉关注。