liz/rawTherapee
liz/rawTherapee
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

simplified the local contrast code and implemented the "proper" highlights and shadows scaling

Browse Source
This commit is contained in:
Alberto Griggio 2017-12-19 22:24:58 +01:00
parent bd2568c6d8
commit 235a4bb451
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
rtengine/iplocalcontrast.cc
View File

@ -45,8 +45,7 @@ void ImProcFunctions::localContrast(LabImage *lab)
const int width = lab->W;
const int height = lab->H;
const float a = -params->localContrast.amount;
const float half = 0.5f;
const float a = params->localContrast.amount;
const float dark = params->localContrast.darkness;
const float light = params->localContrast.lightness;
array2D<float> buf(width, height);
@ -62,10 +61,10 @@ void ImProcFunctions::localContrast(LabImage *lab)
#endif
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
float bufval = (buf[y][x] - lab->L[y][x]) * a;
float bufval = (lab->L[y][x] - buf[y][x]) * a;
if (dark != 1 || light != 1) {
bufval = max(bufval, half) * light + min(bufval, half) * dark;
bufval *= (bufval > 0.f) ? light : dark;
}
lab->L[y][x] += bufval;