diff --git a/imageviewer-qt4.cpp b/imageviewer-qt4.cpp
index efe81e7..accf3f0 100644
--- a/imageviewer-qt4.cpp
+++ b/imageviewer-qt4.cpp
@@ -588,6 +588,12 @@ void ImageViewer::generateControlPanels() {
   linear_histogramm_adaption = new QPushButton("Do linear histogramm adaption (basic)");
   QObject::connect(linear_histogramm_adaption, SIGNAL(clicked()), this, SLOT(linearHistogrammAdaption()));
   
+  partial_adaption_pieces_slider = new QSlider(Qt::Horizontal);
+  partial_adaption_pieces_slider->setMinimum(2);
+  partial_adaption_pieces_slider->setMaximum(10);
+  partial_adaption_pieces_slider->setValue(5);
+  //QObject::connect(partial_adaption_pieces_slider, SIGNAL(valueChanged(int)), this, SLOT(robustAutomaticContrastAdaption(int)));
+  
   partial_linear_histogramm_adaption = new QPushButton("Do partial, linear histogramm adaption");
   QObject::connect(partial_linear_histogramm_adaption, SIGNAL(clicked()), this, SLOT(partialLinearHistogrammAdaption()));
   
@@ -601,6 +607,7 @@ void ImageViewer::generateControlPanels() {
   task_tab3->addWidget(new QLabel("Working copy"));
   task_tab3->addWidget(histogramm_cumulative_label);
   task_tab3->addWidget(linear_histogramm_adaption);
+  task_tab3->addWidget(partial_adaption_pieces_slider);
   task_tab3->addWidget(partial_linear_histogramm_adaption);
   task_tab3->addWidget(succeeding_histogramm_adaption);
   
diff --git a/imageviewer-qt4.h b/imageviewer-qt4.h
index fcf4424..c97700d 100644
--- a/imageviewer-qt4.h
+++ b/imageviewer-qt4.h
@@ -108,6 +108,8 @@ class ImageViewer : public QMainWindow {
     QLabel* reference_histogramm_cumulative_label;
     QLabel* original_histogramm_cumulative_label;
     QLabel* histogramm_cumulative_label;
+
+    QSlider* partial_adaption_pieces_slider;
     
     QPushButton* linear_histogramm_adaption;
     QPushButton* partial_linear_histogramm_adaption;