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2-pass dual-demosaic-contrast-threshold detection if 1-pass does not find a flat area, #4866

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heckflosse
2018-10-18 22:09:35 +02:00
parent bb0743898b
commit 0da47b0da3
4 changed files with 70 additions and 81 deletions
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20
rtengine/dual_demosaic_RT.cc
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@@ -36,7 +36,7 @@ using namespace std;
namespace rtengine
{
void RawImageSource::dual_demosaic_RT(bool isBayer, const RAWParams &raw, int winw, int winh, const array2D<float> &rawData, array2D<float> &red, array2D<float> &green, array2D<float> &blue, double &contrast, bool autoContrast, int autoX, int autoY)
void RawImageSource::dual_demosaic_RT(bool isBayer, const RAWParams &raw, int winw, int winh, const array2D<float> &rawData, array2D<float> &red, array2D<float> &green, array2D<float> &blue, double &contrast, bool autoContrast)
{
BENCHFUN
@@ -91,24 +91,6 @@ void RawImageSource::dual_demosaic_RT(bool isBayer, const RAWParams &raw, int wi
{ 0.019334, 0.119193, 0.950227 }
};
if (autoContrast && autoX >= 0 && autoY >= 0) {
constexpr int rectSize = 40;
const int autoWidth = min(rectSize, winw - autoX);
const int autoHeight = min(rectSize, winh - autoY);
if (std::min(autoWidth, autoHeight) > 20) {
array2D<float> autoL(autoWidth, autoHeight);
for(int i = 0; i < autoHeight; ++i) {
Color::RGB2L(red[i + autoY] + autoX, green[i + autoY] + autoX, blue[i + autoY] + autoX, autoL[i], xyz_rgb, autoWidth);
}
// calculate contrast based blend factors to use vng4 in regions with low contrast
JaggedArray<float> blend(autoWidth - 2, autoHeight - 2);
int c = calcContrastThreshold(autoL, blend, autoWidth, autoHeight);
if(c < 100) {
contrast = c; // alternative : contrast = c - 1
}
}
}
#pragma omp parallel
{
#pragma omp for