?最小可辨差量

minimum perceptible brightness difference ==> 最小可辨亮度差 minimum perceptible difference ==> 最小可辨差量 minimum perceptible noise ==> 最小可辨噪声 ..

?最小视觉色度差

... perceptible impairment 可觉察的减损... minimum perceptible difference 最小视觉色度差... minimum perceptible noise 最小可辨噪声...