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Slight change to impulse denoise at higher slider settings. In the previous version, values above about 80 lead to unpleasant 'blotchy' appearance. This patch attempts to smooth that out by increasing the sampling radius at large values of the slider; lower settings are unaffected.

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Emil Martinec
2011-09-28 13:14:51 -05:00
parent ea5a0dfb72
commit de28524530
1 changed files with 5 additions and 3 deletions
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8
rtengine/impulse_denoise.h
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@@ -65,14 +65,16 @@ void ImProcFunctions::impulse_nr (LabImage* lab, double thresh) {
AlignedBuffer<double>* buffer = new AlignedBuffer<double> (MAX(width,height));
gaussHorizontal<float> (lab->L, lpf, buffer, width, height, 2.0, false /*multiThread*/);
gaussVertical<float> (lpf, lpf, buffer, width, height, 2.0, false);
gaussHorizontal<float> (lab->L, lpf, buffer, width, height, MAX(2.0,thresh-1.0), false /*multiThread*/);
gaussVertical<float> (lpf, lpf, buffer, width, height, MAX(2.0,thresh-1.0), false);
delete buffer;
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
float impthr = MAX(1.0,5.5-thresh);
for (int i=0; i < height; i++)
for (int j=0; j < width; j++) {
@@ -83,7 +85,7 @@ void ImProcFunctions::impulse_nr (LabImage* lab, double thresh) {
hfnbrave += fabs(lab->L[i1][j1]-lpf[i1][j1]);
}
hfnbrave = (hfnbrave-hpfabs)/24;
hpfabs>(hfnbrave*(5.5-thresh)) ? impish[i][j]=1 : impish[i][j]=0;
hpfabs>(hfnbrave*impthr) ? impish[i][j]=1 : impish[i][j]=0;
}//now impulsive values have been identified