Perception thresholds of the angular size, contrast, and stimulus-detection time as parameters for estimating the visual processability

Аксютов Л.Н. Пороги восприятия углового размера, контраста и продолжительности времени обнаружения стимула как параметры оценки зрительной работоспособности // Оптический журнал. 2007. Т. 74. № 10. С. 66–70.

Aksyutov L.N. Perception thresholds of the angular size, contrast, and stimulus-detection time as parameters for estimating the visual processability [in Russian] // Opticheskii Zhurnal. 2007. V. 74. № 10. P. 66–70.

L. N. Aksyutov, "Perception thresholds of the angular size, contrast, and stimulus-detection time as parameters for estimating the visual processability," Journal of Optical Technology. 74 (10), 700-704 (2007). https://doi.org/10.1364/JOT.74.000700

Using the method of predicting the discrimination probability of visual stimuli and the objects of actual scenes, an analysis is carried out of the threshold luminance difference ∆L_min, proposed by Narisada as an estimate of visual processability in the range of adaptation luminance -1.0 ≤ log lg L_α ≤ 3.0. The numerical values of contrast K_min = ∆L_min /L_α substantially differ from the threshold contrasts obtained in Blackwell's experiments and those calculated by us for the same conditions of visual perception. The results of the analysis give a basis for assuming that the proposed value of ∆L_min needs to be refined. It is shown that the probability of discriminating the stimulus (the object) can be used as an estimate of the visual processability.