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isp:sharpness [2019/05/08 17:32] – created Igor Yefmov | isp:sharpness [2019/05/09 00:01] – Igor Yefmov | ||
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====== Sharpness ====== | ====== Sharpness ====== | ||
- | We define sharpness as the difference of brightness (the pixel' | + | We define sharpness as the difference of brightness (the pixel' |
- | Sharpness for each pixel is calculated based on the values of immediately surrounding it pixels, only the luma component | + | Sharpness for each pixel is calculated based on the values of immediately surrounding it pixels, only the luma component |
- | A pixel' | + | A pixel' |
+ | |||
+ | \[ | ||
+ | \left[ {\begin{array}{ccc} | ||
+ | 0 & -1 & 0 \\ | ||
+ | -1 & coef_5 & -1 \\ | ||
+ | 0 & -1 & 0 \\ | ||
+ | \end{array} } \right] | ||
+ | \] | ||
- | | '' | ||
- | | '' | ||
- | | '' |