Hess R F, Pointer J S, Watt R J
Physiological Laboratory, University of Cambridge, UK.
J Opt Soc Am A. 1989 Feb;6(2):329-39. doi: 10.1364/josaa.6.000329.
The information used in the output of the visual filters was examined for a blur discrimination task for which it had previously been claimed that the best human performance was with pedestal blurs of intermediate magnitude. This conclusion was verified for parameters leading to asymptotic performance for foveal and parafoveal locations. The nature of the computations underlying these visual discriminations was then assessed experimentally and by simulations. The results suggest that a frequency-based model in its simplest form cannot explain these findings. A model based on the spatial properties of filter outputs is discussed.
对视觉滤波器输出中用于模糊辨别任务的信息进行了检查，此前有人声称，对于该任务，人类在中等大小的基座模糊情况下表现最佳。对于导致中央凹和中央凹旁位置渐近性能的参数，这一结论得到了验证。然后通过实验和模拟评估了这些视觉辨别背后的计算性质。结果表明，最简单形式的基于频率的模型无法解释这些发现。讨论了一种基于滤波器输出空间特性的模型。
