Visual search in natural scenes explained by local color properties
Visual search in natural scenes explained by local color properties
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DOI：
10.1364/josaa.29.00a194
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发表时间：
2012-02-01
影响因子：
1.9
通讯作者：
Oakley, John P.
中科院分区：
文献类型：
--
作者：
Amano, Kinjiro;Foster, David H.;Oakley, John P.
在自然场景中视觉搜索小物体或目标的成功取决于许多因素，包括场景的空间结构和观察者的眼球运动模式。本研究的目的是确定在何种程度上的自然场景的局部颜色属性可以占目标检测性能。一台计算机控制的高分辨率彩色显示器被用来显示自然场景的图像，其中包含一个小的，随机定位的，阴影灰色的球体，作为目标。观察者的注视位置同时监测与红外视频眼动仪。观察者检测性能的调整方差中约有60%是由局部颜色特性，即亮度和色度的红-绿和蓝-黄分量引起的。观察员的注视也造成了类似的差异。这些结果表明，在自然场景中，局部颜色可以像注视位置一样影响观察者的搜索性能。(c)2012美国光学学会
Success in visually searching for a small object or target in a natural scene depends on many factors, including the spatial structure of the scene and the pattern of observers' eye movements. The aim of this study was to determine to what extent local color properties of natural scenes can account for target-detection performance. A computer-controlled high-resolution color monitor was used to present images of natural scenes containing a small, randomly located, shaded gray sphere, which served as the target. Observers' gaze position was simultaneously monitored with an infrared video eye-tracker. About 60% of the adjusted variance in observers' detection performance was accounted for by local color properties, namely, lightness and the red-green and blue-yellow components of chroma. A similar level of variance was accounted for by observers' fixations. These results suggest that local color can be as influential as gaze position in determining observers' search performance in natural scenes. (c) 2012 Optical Society of America