diff --git a/src/orisys/sensor.py b/src/orisys/sensor.py
index cfdbcda..f5bf5b7 100644
--- a/src/orisys/sensor.py
+++ b/src/orisys/sensor.py
@@ -463,6 +463,7 @@ class Sensor:
             self._extract_tiles(frame)
             img = self.stitch_cal()
             img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+            self.resolution_stitch = img.shape
             self.initial_img = cv2.resize(img, tuple(self._config_resolution_stitch), interpolation=cv2.INTER_CUBIC)
             if self.mirror:
                 self.initial_img = cv2.flip(self.initial_img, 1)