What do you mean by you can't write down 4.5? I'm a little confused with what this slide is showing and would appreciate some intuition - can also ask on piazza!
ecohen2
^^ http://4ourth.com/wiki/Brightness, Luminance, and Contrast this helped me understand the difference between luminance and brightness a little bit better!
m11
Can someone explain the intuition behind why L* = Y^.45, why does luminance vs. perceived brightness create a graph of log form.
sarukkai
@m11 the equation for L* simply represents how the human eye roughly works, the reason why it perceives at a rate of roughly Y^0.45 is presumably so that it can tell differences in lighting better when there is relatively little light present, a reasonable adaptation for human function.
What do you mean by you can't write down 4.5? I'm a little confused with what this slide is showing and would appreciate some intuition - can also ask on piazza!
^^ http://4ourth.com/wiki/Brightness, Luminance, and Contrast this helped me understand the difference between luminance and brightness a little bit better!
Can someone explain the intuition behind why L* = Y^.45, why does luminance vs. perceived brightness create a graph of log form.
@m11 the equation for L* simply represents how the human eye roughly works, the reason why it perceives at a rate of roughly Y^0.45 is presumably so that it can tell differences in lighting better when there is relatively little light present, a reasonable adaptation for human function.