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Stretch and calculate stats on demand

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This commit is contained in:
Dušan Poizl
2022-04-06 15:49:58 +02:00
parent 2ff1b993a1
commit 023a616fa0
7 changed files with 63 additions and 37 deletions
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stretchpanel.cpp
+10 -5
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@@ -28,18 +28,23 @@ StretchPanel::StretchPanel(QWidget *parent) : QWidget(parent)
resetButton->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
layout->addWidget(resetButton);
connect(resetButton, SIGNAL(pressed()), this, SLOT(resetMTF()));
QPushButton *autoStretchButton = new QPushButton(tr("Autostretch"), this);
autoStretchButton->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
layout->addWidget(autoStretchButton);
connect(autoStretchButton, SIGNAL(pressed()), this, SIGNAL(autoStretch()));
}
void StretchPanel::imageLoaded(Image *img)
void StretchPanel::stretchImage(Image *img)
{
if(img)
{
if(img->rawImage())
{
double mean, stdDev, median;
img->rawImage()->imageStats(&mean, &stdDev, &median, nullptr, nullptr);
median /= 65536;
double mad = img->rawImage()->MAD() / 65536;
double median, mad;
img->rawImage()->imageStats(nullptr, nullptr, &median, nullptr, nullptr, &mad);
median /= img->rawImage()->norm();
mad /= img->rawImage()->norm();
float bp = median + mad * BLACK_POINT_SIGMA * MAD_TO_SIGMA;
float mid = MTF(median - bp, TARGET_BACKGROUND);
m_stfSlider->setMTFParams(bp, mid, 1.0f);