diff --git a/viewer/JFJochViewerROIResult.cpp b/viewer/JFJochViewerROIResult.cpp
index 18d77762..9c91297d 100644
--- a/viewer/JFJochViewerROIResult.cpp
+++ b/viewer/JFJochViewerROIResult.cpp
@@ -16,14 +16,22 @@ JFJochViewerROIResult::JFJochViewerROIResult(QWidget *parent) : QWidget(parent)
     roi_x = new QLabel("", this);
     roi_y = new QLabel("", this);
 
+    label_1 = new QLabel("", this);
+    label_2 = new QLabel("", this);
+
+    label_1->setAlignment(Qt::AlignCenter);
+    label_2->setAlignment(Qt::AlignCenter);
+
     layout->addWidget(roi_mean, 0, 0);
     layout->addWidget(roi_var, 0, 1);
     layout->addWidget(roi_sum, 0, 2);
     layout->addWidget(roi_max, 0, 3);
-    layout->addWidget(roi_npixel, 1, 0);
-    layout->addWidget(roi_masked, 1, 1);
-    layout->addWidget(roi_x, 1, 2);
-    layout->addWidget(roi_y, 1, 3);
+    layout->addWidget(label_1, 1,0,1,2);
+    layout->addWidget(roi_npixel, 1, 2);
+    layout->addWidget(roi_masked, 1, 3);
+    layout->addWidget(label_2, 2,0,1,2);
+    layout->addWidget(roi_x, 2, 2);
+    layout->addWidget(roi_y, 2, 3);
     setLayout(layout);
 }
 
@@ -37,10 +45,12 @@ void JFJochViewerROIResult::SetROIResult(ROIMessage roi) {
         roi_mean->setText(QString("Mean <b>%1</b>").arg(QString::number(roi_mean_val, 'f', 3)));
         roi_var->setText(QString("Var <b>%1</b>").arg(QString::number(variance, 'f', 3)));
         roi_max->setText(QString("Max <b>%1</b>").arg(roi.max_count));
-        roi_npixel->setText(QString("Pixels <b>%1</b>").arg(roi.pixels));
+        roi_npixel->setText(QString("Valid <b>%1</b>").arg(roi.pixels));
         roi_masked->setText(QString("Masked <b>%1</b>").arg(roi.pixels_masked));
         roi_x->setText(QString("x: <b>%1</b>").arg(static_cast<float>(roi.x_weighted) / roi.sum));
         roi_y->setText(QString("y: <b>%1</b>").arg(static_cast<float>(roi.y_weighted) / roi.sum));
+        label_1->setText(QString("Pixel count"));
+        label_2->setText(QString("Center of mass"));
     } else {
         roi_sum->setText("");
         roi_mean->setText("");
@@ -50,5 +60,7 @@ void JFJochViewerROIResult::SetROIResult(ROIMessage roi) {
         roi_masked->setText("");
         roi_x->setText("");
         roi_y->setText("");
+        label_1->setText("");
+        label_2->setText("");
     }
 }
diff --git a/viewer/JFJochViewerROIResult.h b/viewer/JFJochViewerROIResult.h
index 1dec620c..e8e6663b 100644
--- a/viewer/JFJochViewerROIResult.h
+++ b/viewer/JFJochViewerROIResult.h
@@ -19,6 +19,8 @@ class JFJochViewerROIResult : public QWidget{
     QLabel *roi_masked;
     QLabel *roi_x;
     QLabel *roi_y;
+    QLabel *label_1;
+    QLabel *label_2;
 
 public slots:
     void SetROIResult(ROIMessage msg);
diff --git a/viewer/windows/JFJoch2DAzintImageWindow.cpp b/viewer/windows/JFJoch2DAzintImageWindow.cpp
index b8f2277f..0a205a78 100644
--- a/viewer/windows/JFJoch2DAzintImageWindow.cpp
+++ b/viewer/windows/JFJoch2DAzintImageWindow.cpp
@@ -3,7 +3,7 @@
 
 #include <QStatusBar>
 #include "JFJoch2DAzintImageWindow.h"
-
+#include "../JFJochViewerROIResult.h"
 
 JFJoch2DAzintImageWindow::JFJoch2DAzintImageWindow(QWidget *parent) : JFJochHelperWindow(parent) {
     QWidget *centralWidget = new QWidget(this);
@@ -25,9 +25,12 @@ JFJoch2DAzintImageWindow::JFJoch2DAzintImageWindow(QWidget *parent) : JFJochHelp
     foreground_row->addWidget(new QLabel("Foreground:"));
     foreground_row->addWidget(foreground_slider);
 
+    auto roi_result = new JFJochViewerROIResult(this);
+
     grid_layout->addLayout(background_row, 0, 0, 1, 2);
     grid_layout->addLayout(foreground_row, 1, 0, 1, 2);
     grid_layout->addWidget(viewer, 2, 0, 1, 2);
+    grid_layout->addWidget(roi_result, 3, 0, 1, 2);
     centralWidget->setLayout(grid_layout);
 
     connect(viewer, &JFJochAzIntImage::backgroundChanged,
@@ -42,6 +45,8 @@ JFJoch2DAzintImageWindow::JFJoch2DAzintImageWindow(QWidget *parent) : JFJochHelp
                 foreground_slider->setValue(val);
             });
 
+    connect(viewer, &JFJochAzIntImage::roiCalculated, roi_result, &JFJochViewerROIResult::SetROIResult);
+
     connect(background_slider, &SliderPlusBox::valueChanged, viewer, &JFJochAzIntImage::changeBackground);
     connect(foreground_slider, &SliderPlusBox::valueChanged, viewer, &JFJochAzIntImage::changeForeground);
 
diff --git a/viewer/windows/JFJochCalibrationWindow.cpp b/viewer/windows/JFJochCalibrationWindow.cpp
index e5a76124..04cca5e2 100644
--- a/viewer/windows/JFJochCalibrationWindow.cpp
+++ b/viewer/windows/JFJochCalibrationWindow.cpp
@@ -7,6 +7,8 @@
 #include <QHBoxLayout>
 #include <QLabel>
 
+#include "../JFJochViewerROIResult.h"
+
 JFJochCalibrationWindow::JFJochCalibrationWindow(QWidget *parent) : JFJochHelperWindow(parent) {
     QWidget *centralWidget = new QWidget(this);
     setWindowTitle("Calibration image viewer");
@@ -35,11 +37,14 @@ JFJochCalibrationWindow::JFJochCalibrationWindow(QWidget *parent) : JFJochHelper
     foreground_row->addWidget(new QLabel("Foreground:"));
     foreground_row->addWidget(foreground_slider);
 
+    auto roi_result = new JFJochViewerROIResult(this);
+
     grid_layout->addWidget(calibration_option, 0, 0);
     grid_layout->addWidget(color_map_select, 0, 1);
     grid_layout->addLayout(background_row, 1, 0, 1, 2);
     grid_layout->addLayout(foreground_row, 2, 0, 1, 2);
     grid_layout->addWidget(viewer, 3, 0, 1, 2);
+    grid_layout->addWidget(roi_result, 4, 0, 1, 2);
 
     connect(viewer, &JFJochSimpleImage::backgroundChanged,
         [this] (float val) {
@@ -52,6 +57,7 @@ JFJochCalibrationWindow::JFJochCalibrationWindow(QWidget *parent) : JFJochHelper
             QSignalBlocker blocker(foreground_slider);
             foreground_slider->setValue(val);
         });
+    connect(viewer, &JFJochSimpleImage::roiCalculated, roi_result, &JFJochViewerROIResult::SetROIResult);
 
     connect(background_slider, &SliderPlusBox::valueChanged, viewer, &JFJochSimpleImage::changeBackground);
     connect(foreground_slider, &SliderPlusBox::valueChanged, viewer, &JFJochSimpleImage::changeForeground);