Detection and discrimination of texture modulations defined by orientation, spatial frequency, and contrast.
Detection and discrimination of texture modulations defined by orientation, spatial frequency, and contrast.
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检测和区分由方向、空间频率和对比度定义的纹理调制。
DOI：
10.1364/josaa.20.000401
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
F. Kingdom
中科院分区：
文献类型：
--
作者：
N. Prins;F. Kingdom
我们试图确定是否检测和识别的纹理调制介导的一个共同的机制。在每次试验中，呈现两种纹理，其中一种包含方向调制（OM）、空间频率调制（FM）或对比度调制（CM）。观察者被要求指出是否调制纹理是在第一或第二间隔，以及纹理调制的性质。结果表明，对于三种成对匹配中的两种（OM-FM和OM-CM），检测和识别性能几乎相同，这表明了共同的潜在机制。然而，当FM和CM纹理配对，歧视阈值显着高于检测阈值。在纹理感知的过滤-校正-过滤模型的背景下，我们的研究结果表明，检测的基础机制是关于它们的一阶输入标记的;即，这些机制的标识可用于更高级别的处理。几种可能的解释被认为是错误识别的FM和CM在检测阈值。
We sought to determine whether the detection and the identification of texture modulations are mediated by a common mechanism. On each trial two textures were presented, one of which contained a modulation in orientation (OM), spatial frequency (FM), or contrast (CM). Observers were required to indicate whether the modulated texture was presented in the first or the second interval as well as the nature of the texture modulation. The results showed that for two of the three pairwise matchings (OM-FM and OM-CM) detection and identification performance were nearly identical, suggesting a common underlying mechanism. However, when FM and CM textures were paired, discrimination thresholds were significantly higher than detection thresholds. In the context of the filter-rectify-filter model of texture perception, our results suggest that the mechanisms underlying detection are labeled with respect to their first-order input; i.e., the identities of these mechanisms are available to higher levels of processing. Several possible explanations for the misidentification of FM and CM at detection threshold are considered.