Tone Mapping So far So far Tone Mapping Some Images have too much dynamic range to display on a slide belgiumhdr Recall Sharpening Input Coarse Fine Tone Mapping Input ID: 674005
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Slide1
CS448f: Image Processing For Photography and Vision
Tone MappingSlide2
So farSlide3
So farSlide4
Tone Mapping
Some Images have too much dynamic range to display on a slide:
(belgium.hdr)Slide5
Recall Sharpening
Input
=
Coarse +
FineSlide6
Tone Mapping
Input
=
Coarse +
FineSlide7
Tone Mapping
Output
=
Coarse
+
FineSlide8
Tone Mapping
Output
=
Coarse
+
Fine
Tons of strong detail in the bright regions, not enough in the dark regionsSlide9
Tone Mapping
Input
=
Coarse
x
FineSlide10
Tone Mapping
Log(Input)
=
Log(Coarse)
+
Log(Fine)Slide11
Tone Mapping
Log(Output)
=
Log(Coarse)
+
Log(Fine)Slide12
How should we make the coarse layer?Slide13
InputSlide14
CoarseSlide15
FineSlide16
InputSlide17
Exp(Log(Coarse)*0.7 + Log(Detail))Slide18
Exp(Log(Coarse)*0.5 + Log(Detail))Slide19
Exp(Log(Coarse)*0.3 + Log(Detail))Slide20
Conclusion:
You can use a bilateral for tonemapping
It’s highly parameter-sensitive
Results aren’t great
What’s better?
Not much.