From ffb0893dc2ccf937c8414f4df88426308c822324 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 10 Nov 2013 22:23:59 +0100
Subject: fix possible race

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
---
 ftnoir_tracker_aruco/ar_video_widget.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ftnoir_tracker_aruco/ar_video_widget.cpp b/ftnoir_tracker_aruco/ar_video_widget.cpp
index 645ea3a9..c452a638 100644
--- a/ftnoir_tracker_aruco/ar_video_widget.cpp
+++ b/ftnoir_tracker_aruco/ar_video_widget.cpp
@@ -14,7 +14,7 @@ using namespace std;
 void ArucoVideoWidget::update_image(const cv::Mat& frame)
 {
     QMutexLocker foo(&mtx);
-    _frame = frame;
+    _frame = frame.clone();
 }
 
 void ArucoVideoWidget::update_and_repaint()
-- 
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