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

Use iterated boxblur to approximate gaussian blur for retinex

Browse Source
This commit is contained in:
heckflosse
2015-10-31 21:25:12 +01:00
parent 280feabddf
commit 47898f54fd
3 changed files with 141 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
rtengine/ipretinex.cc
View File

@@ -311,16 +311,17 @@ void RawImageSource::MSR(float** luminance, float** originalLuminance, float **e
const float logBetaGain = xlogf(16384.f);
const float pond = logBetaGain / (float) scal;
float *buffer = new float[W_L*H_L];;
#ifdef _OPENMP
#pragma omp parallel
#endif
{
for ( int scale = scal - 1; scale >= 0; scale-- ) {
if(scale == scal - 1) { // probably large sigma. Use double gauss with sigma divided by sqrt(2.0)
gaussianBlur<float> (src, out, W_L, H_L, RetinexScales[scale], true);
if(scale == scal - 1) {
gaussianBlur<float> (src, out, W_L, H_L, RetinexScales[scale], buffer);
} else { // reuse result of last iteration
gaussianBlur<float> (out, out, W_L, H_L, sqrtf(SQR(RetinexScales[scale]) - SQR(RetinexScales[scale + 1])));
gaussianBlur<float> (out, out, W_L, H_L, sqrtf(SQR(RetinexScales[scale]) - SQR(RetinexScales[scale + 1])), buffer);
}
#ifdef __SSE2__
@@ -363,7 +364,7 @@ void RawImageSource::MSR(float** luminance, float** originalLuminance, float **e
}
}
}
delete [] buffer;
delete [] outBuffer;
delete [] srcBuffer;