From dd9d080cda9a4454b43da3b0aa9d805a37c96d77 Mon Sep 17 00:00:00 2001
From: Aref Ariyapour <aref.ariyapour@gmail.com>
Date: Wed, 22 Apr 2020 13:39:19 +0200
Subject: [PATCH] Fix exit key in blink detection example

Set q for exiting the program. Move cv2.waitKey() outside the for loop that detects face landmarks.
---
 examples/blink_detection.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/examples/blink_detection.py b/examples/blink_detection.py
index dd7db2d..a6c3568 100644
--- a/examples/blink_detection.py
+++ b/examples/blink_detection.py
@@ -57,7 +57,6 @@ def main():
                 cv2.rectangle(small_frame, left_eye[0], right_eye[-1], color, thickness)
 
                 cv2.imshow('Video', small_frame)
-                cv2.waitKey(1)
 
                 ear_left = get_ear(left_eye)
                 ear_right = get_ear(right_eye)
@@ -80,6 +79,9 @@ def main():
                     closed_count = 0
 
         process = not process
+        key = cv2.waitKey(1) & 0xFF
+        if key == ord("q"):
+            break
 
 def get_ear(eye):
 
-- 
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