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isp:contrast [2019/05/09 00:29] – Igor Yefmov | isp:contrast [2019/07/14 02:43] – Igor Yefmov | ||
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Line 10: | Line 10: | ||
Assuming the \(L\) component to be in range \([0..100]%%\) the contrast adjustment looks like this: | Assuming the \(L\) component to be in range \([0..100]%%\) the contrast adjustment looks like this: | ||
\[ | \[ | ||
- | luma = (luma - 50) * contrast + 50 \\ | + | luma = (luma - 50) * contrast^2 + 50 \\ |
- | luma \in [0..100]%% | + | luma \in [0..100] \\ |
+ | contrast \in ]0..1.0]%% | ||
\] | \] | ||
<code c++>// pseudo-code | <code c++>// pseudo-code | ||
void contrast(/ | void contrast(/ | ||
for(const & pixel: image){ | for(const & pixel: image){ | ||
- | pixel.luma = std:: | + | pixel.luma = std:: |
} | } | ||
}</ | }</ | ||