Retina-V1 model of detectability across the visual field
Retina-V1 model of detectability across the visual field
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DOI：
10.1167/14.12.22
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发表时间：
2014-01-01
影响因子：
1.8
通讯作者：
Geisler, Wilson S.
中科院分区：
文献类型：
--
作者：
Bradley, Chris;Abrams, Jared;Geisler, Wilson S.
提出了一种实用的模型，用于预测视场中任意位置、任意灰度背景和光视条件下目标的可探测性。纳入模型的主要因素包括(a)眼睛的光学点扩展函数，(b)局部亮度增益控制（韦伯定律），(c)视网膜神经节细胞的采样阵列，(d)方向和空间频率相关的对比度掩蔽，(e)宽带对比度掩蔽，以及(f)有效的响应池。该模型针对先前报道的均匀背景阈值测量值进行了测试（ModelFest数据集和来自Foley， Varadharajan, Koh, & Farias， 2007年的数据），并针对本文报道的几个ModelFest目标在均匀、1/f噪声和自然背景下的视网膜偏心率范围从0度到10度的新测量值进行了测试。虽然该模型的自由参数很少，但它能够很好地解释所有阈值测量。
A practical model is proposed for predicting the detectability of targets at arbitrary locations in the visual field, in arbitrary gray scale backgrounds, and under photopic viewing conditions. The major factors incorporated into the model include (a) the optical point spread function of the eye, (b) local luminance gain control (Weber's law), (c) the sampling array of retinal ganglion cells, (d) orientation and spatial frequency-dependent contrast masking, (e) broadband contrast masking, and (f) efficient response pooling. The model is tested against previously reported threshold measurements on uniform backgrounds (the ModelFest data set and data from Foley, Varadharajan, Koh, & Farias, 2007) and against new measurements reported here for several ModelFest targets presented on uniform, 1/f noise, and natural backgrounds at retinal eccentricities ranging from 0 degrees to 10 degrees. Although the model has few free parameters, it is able to account quite well for all the threshold measurements.