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| author | Søren Sandmann Pedersen <ssp@redhat.com> | 2013-08-04 20:20:12 -0400 |
|---|---|---|
| committer | Søren Sandmann Pedersen <ssp@redhat.com> | 2013-08-04 20:20:12 -0400 |
| commit | 43b17cdce558065738061bc1f4eeac3a9d97ac49 (patch) | |
| tree | fb7cbedb53bea11ef88bda919834072923372785 | |
| parent | 6c1cb897329d9c8a988448c16dbbc2a4839aa8f3 (diff) | |
More about gammma and dithering
| -rw-r--r-- | docs/dither.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/docs/dither.txt b/docs/dither.txt index a946b2ba..198595bd 100644 --- a/docs/dither.txt +++ b/docs/dither.txt @@ -102,7 +102,6 @@ Details: * onto F at position a and b respectively. */ - Gamma and dithering: An observation is that dithering a gradient down to 121 makes the @@ -119,8 +118,9 @@ proves two things: If you scale the image down in a gamma-aware way, the wrong colors stay wrong, which shows that gamma-aware downscaling is better capturing human vision, at least in the case of lots of high-frequency -information. - +information. It suggests that converting to linear RGB before applying +the filter is a better model of human vision. Which makes sense if the +filter is mainly coming from the cornea and the lens. Old algorithm: |