送交者: 大能猫 于 July 11, 2011 16:15:51:
回答: 哦，我记得那里看过说颜色看不出也是互补不在了，因为 由 阿胖~ 于 July 11, 2011 13:44:25:
I agree that it has to do with desensitization. Focusing on the black dot potentially weakens the sharpness signal outside the macula. I don't think it's coincidental that the three colors used here are cyan, magenta, and yellow. The CMYK (cyan, magenta, yellow, black) system is well-known as a counterpart to the RGB (red, green, blue) system. In other words, perhaps the desensitization of the signal sharpness blurs the three colors together. Cyan + Magenta + Yellow = Black, so light shades of each = gray. The colors can be carefully selected to achieve the desired level of grayscale.