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Wavelet levels - some small optimizations nopatch

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This commit is contained in:
jdc
2015-04-13 11:44:05 +02:00
parent 6a8ae4c485
commit 6240014433
1 changed files with 28 additions and 4 deletions
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32
rtengine/ipwavelet.cc
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@@ -930,7 +930,8 @@ omp_set_nested(oldNested);
float averaP = 0.f, averaN = 0.f;
float thres = 5.f;//different fom zero to take into account only data large enough
max=0.f;
min=0.f;
#ifdef _OPENMP
#pragma omp parallel num_threads(wavNestedLevels) if(wavNestedLevels>1)
#endif
@@ -1068,6 +1069,9 @@ StopWatch Stop1("Evaluate2");
float multL=(float)contrast*(maxl-1.f)/100.f + 1.f;
float multH=(float) contrast*(maxh-1.f)/100.f + 1.f;
double avedbl=0.f; // use double precision for big summations
float max0 = 0.f;
float min0 = FLT_MAX;
if(contrast != 0.f) { // contrast = 0.f means that all will be multiplied by 1.f, so we can skip this step
#ifdef _OPENMP
#pragma omp parallel for reduction(+:avedbl) num_threads(wavNestedLevels) if(wavNestedLevels>1)
@@ -1075,17 +1079,37 @@ StopWatch Stop1("Evaluate2");
for (int i=0; i<W_L*H_L; i++) {
avedbl += WavCoeffs_L0[i];
}
#pragma omp parallel num_threads(wavNestedLevels) if(wavNestedLevels>1)
{
float lminL = FLT_MAX;
float lmaxL = 0.f;
#pragma omp for
for(int i = 0; i < W_L*H_L; i++) {
if(WavCoeffs_L0[i] < lminL) lminL = WavCoeffs_L0[i];
if(WavCoeffs_L0[i] > lmaxL) lmaxL = WavCoeffs_L0[i];
}
#pragma omp critical
{ if(lminL < min0) min0 = lminL;
if(lmaxL > max0) max0 = lmaxL;
}
}
}
float max0=0.f;
float min0=50000.f;
#ifdef _OPENMP
//#pragma omp parallel for num_threads(wavNestedLevels) if(wavNestedLevels>1)
#endif
for (int i=0; i<W_L*H_L; i++) {
/* for (int i=0; i<W_L*H_L; i++) {
if(WavCoeffs_L0[i] > max0) max0=WavCoeffs_L0[i];
if(WavCoeffs_L0[i] < min0) min0=WavCoeffs_L0[i];
}
*/
max0/=327.68f;
min0/=327.68f;
float ave = avedbl / (double)(W_L*H_L);