From 475dce83b1b894401731ea12489af3aa94f80785 Mon Sep 17 00:00:00 2001
From: Théo de la Hogue
Date: Tue, 31 May 2022 09:08:10 +0200
Subject: Catching None case during ArUco marker tracking.

---
 src/argaze/ArUcoMarkers/ArUcoTracker.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/argaze/ArUcoMarkers/ArUcoTracker.py b/src/argaze/ArUcoMarkers/ArUcoTracker.py
index 6a71e86..55166ee 100644
--- a/src/argaze/ArUcoMarkers/ArUcoTracker.py
+++ b/src/argaze/ArUcoMarkers/ArUcoTracker.py
@@ -192,7 +192,10 @@ class ArUcoTracker():
 
     def get_markers_ids(self):
         """Get tracked markers identifers."""
-        return [i[0] for i in self.__markers_ids]
+        if self.__markers_ids is not None:
+            return [i[0] for i in self.__markers_ids]
+        else:
+            return []
 
     def get_marker_corners(self, i):
         """Get marker i corners."""
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