PERCEPTUAL CONSTRAINTS FOR IMAGE UNDERSTANDING IN HUMANS

这个项目的目标是了解人类视觉是如何 系统使用纹理和轮廓信息来感知空间 环境中曲面的布局。计算的一个结果 分析纹理和轮廓信息，以及一些 演示，就是可以使用多个不同的约束 以帮助解释曲面几何，反映 产生的环境的基本范畴结构 对约束的要求。拟议的研究将集中于揭开 视觉系统使用的约束的结构和 确定要应用哪些约束的策略。这个 建议的策略将是调查纹理和轮廓如何 信息与其他正常可用的提示相互作用，如立体声， 调节和模糊以确定曲面几何形状的感知。 线索之间的交互模式，例如纹理和 曲面几何的等高线信息偏差解释 立体声，将被用来研究潜在的约束结构 纹理和轮廓信息的解释-什么 视觉系统可以使用的限制以及它如何确定 要对任何给定场景施加的约束；例如，是否 以及视觉系统如何协同使用立体信息 使用纹理和轮廓提示来确定什么是约束 适合用于球杆解释。这项研究将涉及 与以前的工作相比，方法上有了很大的进步。我们会 纹理和表面轮廓的知觉解释研究 半自然主义刺激中的信息，我们将通过 将纹理或轮廓图案投影到查看的真实表面上 用双眼观察。用于刺激投射物理设置将使 美国将操纵查看的表面的3D方向 与投射在其上的图案无关。通过使用曲面 面向刺激的深度，我们减少了 在CRT上呈现的模拟3D显示；包括 线索之间的冲突和不同知觉之间的冲突 刺激解释的模式；即，作为2D模式投影 在正面平行显示上或作为3D的图形表示 场景。这些结果将使我们更深入地了解 三维表面纹理和轮廓线索的微观结构 几何图形。

The goal of this project is to understand how the human visual system uses texture and contour information to perceive the spatial layout of surfaces in the environment. One result of computational analyses of texture and contour information, as well as some demonstrations, is that multiple, different constraints may be used to aid in the interpretation of surface geometry,reflecting the essential categorical structure of the environment which gives rise to the constraints. The proposed research will focus on uncovering the structure of the constraints which the visual system uses and the strategies by which it determines which constraints to apply. The proposed strategy will be to investigate how texture and contour information interacts with other normally available cues like stereo, accommodation and blur to determine percepts of surface geometry. Patterns of interaction between the cues, such as how texture and contour information bias interpretations of surface geometry from stereo, will be used to investigate the constraint structure underlying the interpretation of texture and contour information-what constraints the visual system can use and how it determines which constraints to impose for any given scene; for example, whether and how the visual system uses stereo information cooperatively with texture and contour cues to determine what constraints are appropriate to use for cue interpretation. The research will involve a significant methodological advance over previous work. We will study the perceptual interpretation of texture and surface contour information in semi-naturalistic stimuli, which we will generate by projecting texture or contour patterns onto real surfaces viewed binocularly. The physical set-up for stimulus projection will enable us to manipulate the 3D orientations of viewed surfaces independently of the patterns projected on them. By using surfaces oriented in depth for stimuli, we reduce the conflicts inherent in simulated 3D displays presented on a CRT; including both gross conflicts between cues and conflicts between different perceptual modes of stimulus interpretation; that is, as 2D patterns projected on a fronto-parallel display or as pictorial representations of 3D scenes. The results will provide a deeper understanding of the microstructure of texture and contour cues for 3D surface geometry.