Gigauri N K, Iuldashev A M
Med Tekh. 1994 Nov-Dec(6):12-5.
When developing diagnostic apparatuses to assess visual power characteristics by means of electronic displays, much attention should be paid to metrological aspects. To meet the metrological requirements for sensitivity, measurement range and errors, etc. allows one to detect the changes concerned in visual characteristics and visual disorders at different stages of pathological development. To estimate visual frequency-contrast sensitivity and colour discrimination ability, the number of reproduced brightness gradations for each display primary colour R, G or B should be at least 256 and the discrete raster format of test image, 512 x 512 elements. Recommendations are given on display operation modes with the aim of enhancing the accuracy of estimating visual characteristics.
在开发通过电子显示器评估视觉能力特征的诊断设备时，应高度重视计量学方面。为满足对灵敏度、测量范围和误差等的计量要求，以便能够在病理发展的不同阶段检测视觉特征和视觉障碍方面的相关变化。为了估计视觉频率对比度灵敏度和颜色辨别能力，每个显示器原色R、G或B的再现亮度等级数量应至少为256，测试图像的离散光栅格式应为512×512像素。针对显示器操作模式给出了建议，目的是提高视觉特征估计的准确性。
