From 9267b4850d662bd8666f3c02b232b70121138830 Mon Sep 17 00:00:00 2001
From: lichun <lyron.lc@gmail.com>
Date: Wed, 12 Jun 2019 18:18:19 +0800
Subject: [PATCH] push frame when videoCapture opened

---
 modules/bioinspired/samples/retinaDemo.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/bioinspired/samples/retinaDemo.cpp b/modules/bioinspired/samples/retinaDemo.cpp
index 2b5c0b152..40dd7a77f 100644
--- a/modules/bioinspired/samples/retinaDemo.cpp
+++ b/modules/bioinspired/samples/retinaDemo.cpp
@@ -68,7 +68,10 @@ int main(int argc, char* argv[])
     else
         videoCapture.open(parser.get<int>("camera"));
 
-    videoCapture >> inputFrame;
+    if (videoCapture.isOpened())
+    {
+        videoCapture >> inputFrame;
+    }
 
     if(inputFrame.empty())
     {