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发表于 2015-1-8 18:46:55
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http://what-when-how.com/display ... -interfaces-part-2/
Figure 2-8 Typical normalized luminance response curve for the human eye, showing the nonlinear relationship between absolute luminance (within the current adapted range) and perceived brightness. This shows that the eye is more sensitive to luminance changes in the “dark” end of the current range than to similar-sized changes in “bright” areas. The response curve shown here is a power function wherein the perceived brightness is given as Y(1/25), or Y(04). Different standard models have used different values for the exponent in this function, ranging from about 0.333 to 0.450. |
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