视觉信号检测。II. 信号位置识别。
Visual signal detection. II. Signal-location identification.
作者信息
Burgess A E, Ghandeharian H
出版信息
J Opt Soc Am A. 1984 Aug;1(8):906-10. doi: 10.1364/josaa.1.000906.
PMID:6470843
Abstract
We have measured the effect of signal-location uncertainty on the detectability of simple visual signals in uncorrelated image noise. An M-alternative forced-choice signal-location identification technique was used with values of M ranging from 2 to 1800. We find high statistical efficiency (50% for aperiodic signals), and results from one value of M can be used to predict all others. The results are consistent with the view that humans can act as suboptimal maximum a posteriori probability observers.
摘要
我们测量了信号位置不确定性对不相关图像噪声中简单视觉信号可检测性的影响。采用了一种M选1的强制选择信号位置识别技术，M的值范围为2至1800。我们发现统计效率很高（非周期性信号为50%），并且来自一个M值的结果可用于预测所有其他值。这些结果与人类可以作为次优最大后验概率观察者的观点一致。
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