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[TASK] Add cumulative histogramms.

This commit is contained in:
Jan Philipp Timme 2015-11-13 15:36:52 +01:00
parent bc5bec953f
commit 42bf3fb44e
3 changed files with 61 additions and 17 deletions
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23
imageviewer-qt4.cpp
View File

@ -197,8 +197,10 @@ void ImageViewer::analyzeImage() {
original_stats->setText(result);
result = QString("Intensity: Average: %1, Variance: %2").arg(working_copy->getIntensityAverage()).arg(working_copy->getIntensityVariance());
stats->setText(result);
histogramm_label->setPixmap(QPixmap::fromImage(*(working_copy->getHistogrammImage())));
original_histogramm_label->setPixmap(QPixmap::fromImage(*(original->getHistogrammImage())));
histogramm_label->setPixmap(QPixmap::fromImage(*(working_copy->getHistogrammNormalImage())));
original_histogramm_label->setPixmap(QPixmap::fromImage(*(original->getHistogrammNormalImage())));
histogramm_cumulative_label->setPixmap(QPixmap::fromImage(*(working_copy->getHistogrammCumulativeImage())));
original_histogramm_cumulative_label->setPixmap(QPixmap::fromImage(*(original->getHistogrammCumulativeImage())));
}
}
@ -251,7 +253,7 @@ void ImageViewer::adjustContrast(int c) {
renewLogging();
}
/** copy
/**
* Using the percentile given by the slider, do a robust automatic contrast adaption.
*
* @brief ImageViewer::robustAutomaticContrastAdaption
@ -431,6 +433,21 @@ void ImageViewer::generateControlPanels() {
task_tab3 = new QVBoxLayout();
task_tab_widget3->setLayout(task_tab3);
original_histogramm_cumulative_label = new QLabel();
original_histogramm_cumulative_label->setBackgroundRole(QPalette::Base);
original_histogramm_cumulative_label->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
original_histogramm_cumulative_label->setScaledContents(false);
histogramm_cumulative_label = new QLabel();
histogramm_cumulative_label->setBackgroundRole(QPalette::Base);
histogramm_cumulative_label->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
histogramm_cumulative_label->setScaledContents(false);
task_tab3->addWidget(new QLabel("Original image"));
task_tab3->addWidget(original_histogramm_cumulative_label);
task_tab3->addWidget(new QLabel("Working copy"));
task_tab3->addWidget(histogramm_cumulative_label);
tabWidget->addTab(task_tab_widget3, "Task #3");
//Show it

3
imageviewer-qt4.h
View File

@ -102,6 +102,9 @@ class ImageViewer : public QMainWindow {
QWidget* task_tab_widget3;
QVBoxLayout* task_tab3;
QLabel* original_histogramm_cumulative_label;
QLabel* histogramm_cumulative_label;
// "My" space for storing data/results
LazyImage* original;
LazyImage* working_copy;

52
lazy_image.cpp
View File

@ -13,7 +13,8 @@ class LazyImage {
private:
QImage* img; //Not managed by us, just used.
QImage* histogramm_image;
QImage* histogramm_normal_image;
QImage* histogramm_cumulative_image;
double histogramm_relative_intensity[256];
int histogramm_absolute_intensity[256];
int intensity_average;
@ -64,24 +65,41 @@ class LazyImage {
this->intensity_variance = (int) qRound(sum_difference/(this->img->width()*this->img->height()));
};
void generateHistogrammImage(void) {
if(this->histogramm_image != NULL) {
delete this->histogramm_image;
this->histogramm_image = NULL;
void generateNormalHistogrammImage(void) {
if(this->histogramm_normal_image != NULL) {
delete this->histogramm_normal_image;
this->histogramm_normal_image = NULL;
}
//Find biggest value in histogramm data
double max = 0;
for(int i=0; i<256; i++) {
if(histogramm_relative_intensity[i] > max) max = histogramm_relative_intensity[i];
}
this->histogramm_image = new QImage(256, 100, QImage::Format_RGB32);
this->histogramm_image->fill(QColor::fromRgb(200,200,200));
}
this->histogramm_normal_image = new QImage(256, 100, QImage::Format_RGB32);
this->histogramm_normal_image->fill(QColor::fromRgb(200,200,200));
int black = QColor::fromRgb(0,0,0).rgb();
for(int x=0; x<256; x++) {
int k_max = (int) qRound((100*histogramm_relative_intensity[x])/max);
for(int y=0; y<k_max; y++) {
this->histogramm_image->setPixel(x, (100-y)-1, black);
this->histogramm_normal_image->setPixel(x, (100-y)-1, black);
}
}
};
void generateCumulativeHistogrammImage(void) {
if(this->histogramm_cumulative_image != NULL) {
delete this->histogramm_cumulative_image;
this->histogramm_cumulative_image = NULL;
}
this->histogramm_cumulative_image = new QImage(256, 100, QImage::Format_RGB32);
this->histogramm_cumulative_image->fill(QColor::fromRgb(200,200,200));
int black = QColor::fromRgb(0,0,0).rgb();
double total = 0.0;
for(int x=0; x<256; x++) {
total += histogramm_relative_intensity[x];
int k_max = (int) qRound(100*total);
for(int y=0; y<k_max; y++) {
this->histogramm_cumulative_image->setPixel(x, (100-y)-1, black);
}
}
};
@ -89,7 +107,8 @@ class LazyImage {
public:
LazyImage(QImage* img) {
this->histogramm_image = NULL;
this->histogramm_normal_image = NULL;
this->histogramm_cumulative_image = NULL;
this->setImage(img);
};
@ -114,11 +133,16 @@ class LazyImage {
this->gatherHistogrammData();
this->calcIntensityAverage();
this->calcIntensityVariance();
this->generateHistogrammImage();
this->generateNormalHistogrammImage();
this->generateCumulativeHistogrammImage();
};
QImage* getHistogrammImage(void) {
return this->histogramm_image;
QImage* getHistogrammNormalImage(void) {
return this->histogramm_normal_image;
};
QImage* getHistogrammCumulativeImage(void) {
return this->histogramm_cumulative_image;
};
/**