fix color picking segmentation + compilation error

ColorimetricSegmenter.cpp

@@ -692,8 +692,14 @@ void ColorimetricSegmenter::filterRgbWithSegmentation()
 		return;
 	}
 
+    // Retrieve parameters from dialog
+    if (m_app->pickingHub()) {
+        m_pickingHub = m_app->pickingHub();
+    }
+
 	// Retrieve parameters from dialog
-	rgbDlg = new RgbDialog(m_pickingHub, (QWidget*)m_app->getMainWindow());
+    rgbDlg = new RgbDialog(m_pickingHub, (QWidget*)m_app->getMainWindow());
+    rgbDlg->show();
 
 	auto start = std::chrono::high_resolution_clock::now();
 

QuantiDialog.cpp

 #include "QuantiDialog.h"
 
-
+#include<cmath>
 #include <QVariant>
 QuantiDialog::QuantiDialog(QWidget* parent)
 	: QDialog(parent)
@@ -21,5 +21,5 @@ QuantiDialog::QuantiDialog(QWidget* parent)
 */
 void QuantiDialog::updateLabelValues()
 {
-	nb_color_label->setText(QString::fromStdString(std::to_string(static_cast<int>(pow(area_quanti->value(), 3)))));
+    nb_color_label->setText(QString::fromStdString(std::to_string(static_cast<int>(pow(area_quanti->value(), 3)))));
 }