Examination on a Yellow-Blue Mechanism in Dichromacy

二色模拟广泛应用于社会和教育环境。我们使用视觉搜索任务来研究Brettel等人提出的二色模拟的有效性。刺激包括13个彩色圆盘（1个目标和12个干扰物）。将两种颜色分配给6个磁盘作为干扰颜色。测量了找到目标所需的反应时间。三色观察者在二色模拟颜色刺激任务中的反应时间与在原始颜色刺激任务中极端非异常观察者的反应时间在质量上相似。然而，极端非异常观察者的反应时间往往比三色观察者的反应时间长。这表明，目前的二色模拟应该进行修改，以估计模拟图像的色差。

Dichromatic simulations are used widely in social and educational environments. We used a visual search task to investigate the validity of the dichromatic simulation proposed by Brettel et al. The stimuli consisted of 13 colored disks (one target and 12 distractors). Two colors were assigned to 6 disks as distractor colors. The reaction time required to find the target was measured. The reaction times for trichromatic observers in the dichromatic simulated color stimulus task were qualitatively similar to those obtained from extremely deuteranomalous observers in an original color stimulus task. However, the reaction time for the extremely deuteranomalous observers tended to be longer than that of the trichromatic observers. This suggests that the current dichromatic simulation should be modified for estimating color differences in the simulated images.