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Proper error message, Check if grab() was successfull

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This commit is contained in:
Tim Zeuner 2022-11-30 18:55:20 +01:00
parent 551d5f4bb3
commit e45f46c102
1 changed files with 6 additions and 4 deletions
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10
AutonomousMode/Input/input.cpp
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@ -39,17 +39,19 @@ Mat Input::readWebcam()
Mat image; Mat image;
if(!cap.isOpened()) { if(!cap.isOpened()) {
cout << "Fehler"; cout << "Video capture not opened" << std::endl;
return Mat(); return Mat();
} }
cap.grab(); if(!cap.grab()) {
cout << "Could not grab frame from camera" << std::endl;
return Mat();
}
cap.retrieve(image); cap.retrieve(image);
return image; return image;
} }
void Input::freeWebcam() void Input::freeWebcam()
{ {
this->cap.release(); this->cap.release();
} }