Visual Search in Complex Fields: Size Differences between Target Disc and Surrounding Discs
Visual Search in Complex Fields: Size Differences between Target Disc and Surrounding Discs
复制标题
复杂领域中的视觉搜索：目标盘与周围盘之间的尺寸差异
作者：
J. Bloomfield
一个适应性强的技术进行搜索实验，使广泛的研究进行了良好的实践观察员，描述。在每项试验中，提供了一个靶椎间盘。给出了在包含以规则方式排列的99个较大标准盘的显示器中定位不同尺寸的6个实心盘目标以及在107个不规则排列的较大盘的显示器中定位3个盘目标所花费的时间的累积分布。每个显示器使用三名经验丰富的观察员。每个观察者、每个目标、每个显示器获得60个读数。有人建议，对于目标的大小最不同的背景光盘，时间的分布定位在很大程度上取决于响应时间的因素，和最接近的目标的大小的分布在很大程度上取决于搜索因素。一些支持借给理论工作，表明搜索时间呈指数分布。定位特定目标所需的最短时间被用作响应时间的估计。响应时间被发现是成反比的目标和非目标光盘直径的日志之间的差异，和直径之间的差异。对指数搜索方程提出了考虑响应时间的修正。
An adaptable technique for performing search experiments, enabling extensive studies to be undertaken with well-practiced observers, is described. In each trial a single target disc was presented. Cumulative distributions of the times taken to locate 6 solid disc targets of varying size in a display containing 99 larger standard discs arranged in a regular fashion, and 3 disc targets in a display of 107 larger discs arranged irregularly, are presented. Three practiced observers were used with each display. Sixty readings per observer, per target, per display were obtained. It is suggested that for the targets most different in size from the background discs, the distributions of times to locate are largely dependent on response time factors; and for the targets closest in size the distributions are largely dependent on search factors. Some support is lent to theoretical work that suggests search times are exponentially distributed. The shortest time required to locate a particular target is used as an estimate of response time. Response times are found to be inversely proportional to both the difference between the log of the target and nontarget disc diameters, and to the difference between the diameters. An amendment, taking response time into account, is suggested for exponential search equations.