The Detection and Segmentation of Image Motion

图像运动的检测和分割

• 批准号: 0079277
• 负责人: James Todd
• 金额: --
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0079277&HistoricalAwards=false
• 关键词: Detection; Segmentation; Image; Motion

A fundamental problem for both human and machine is to detect and identify moving patterns from sensory information that is often contaminated by noise. Previous research has shown that one way of enhancing signal to noise sensitivity is to sum the outputs of many different motion detectors in different locations of the visual field. An important difficulty with this approach, however, is how to decide which local motion detectors should be summated. Whereas previous studies have examined the case of simple translatory motion where all elements in a pattern move at the same velocity, our research will consider more complicated motions in which it is possible for patterns to rotate or expand over time. We will also investigate the detection of camouflaged objects whose motions are confined to a limited region of the visual field. A series of psychophysical experiments will be performed to isolate the basic mechanisms by which the human visual system is able to cope with these situations. The basic paradigm of these studies is to present a pattern of moving dots with a superimposed pattern of scintillating dots. Observers are required to judge some basic aspect of the moving pattern, such as its shape or its direction of movement. The amount of scintillating noise is manipulated to determine the limits of human performance for each attribute to be judged. Based on the results of these experiments we will attempt to develop a computational model that can simulate the performance of human observers on a wide variety of different tasks.

人类和机器的一个基本问题是从经常被噪声污染的感觉信息中检测和识别运动模式。 先前的研究表明，增强信号对噪声敏感性的一种方法是将视野不同位置中许多不同运动检测器的输出总结。 但是，这种方法的一个重要困难是如何确定应该总结哪些本地运动探测器。 尽管以前的研究已经检查了简单的译动运动的情况，在这种情况下，模式中的所有元素都以相同的速度移动，但我们的研究将考虑更复杂的动作，在这些运动中，模式可以随着时间的推移旋转或​​扩展。 我们还将研究伪装物体的检测，其运动仅限于视野的有限区域。 将进行一系列心理物理实验，以隔离人类视觉系统能够应对这些情况的基本机制。 这些研究的基本范式是提出一种具有叠加磁点模式的移动点的模式。观察者必须判断移动模式的某些基本方面，例如其形状或运动方向。 操纵闪烁的噪声量以确定每个要判断的属性的人类绩效的限制。 根据这些实验的结果，我们将尝试开发一个计算模型，该模型可以模拟人类观察者在各种不同任务上的表现。