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Capture sharpening: small speedup

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This commit is contained in:
Ingo Weyrich
2019-08-15 23:23:28 +02:00
parent 8421f8780a
commit e4b955523e
2 changed files with 58 additions and 10 deletions
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10
rtengine/rawimagesource.cc
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@@ -4998,10 +4998,7 @@ BENCHFUN
#pragma omp parallel for
for (int i = 0; i < H; ++i) {
Color::RGB2L(red[i], green[i], blue[i], L[i], xyz_rgb, W);
for (int j = 0; j < W; ++j) {
Color::RGB2YCbCr(std::max(red[i][j], 0.f), std::max(green[i][j], 0.f), std::max(blue[i][j], 0.f), Y[i][j], Cb[i][j], Cr[i][j]);
Y[i][j] = pow_F(Y[i][j], 1.f / gamma);
}
Color::RGB2YCbCr(red[i], green[i], blue[i], Y[i], Cb[i], Cr[i], gamma, W);
}
// calculate contrast based blend factors to reduce sharpening in regions with low contrast
JaggedArray<float> blend(W, H);
@@ -5015,10 +5012,7 @@ BENCHFUN
StopWatch Stop2("Y2RGB");
#pragma omp parallel for
for (int i = 0; i < H; ++i) {
for (int j = 0; j < W ; ++j) {
Y[i][j] = pow_F(Y[i][j], gamma);
Color::YCbCr2RGB(Y[i][j], Cb[i][j], Cr[i][j], red[i][j], green[i][j], blue[i][j]);
}
Color::YCbCr2RGB(Y[i], Cb[i], Cr[i], red[i], green[i], blue[i], gamma, W);
}
Stop2.stop();
}