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SignalLab1
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Nicolas TRAGLIA 2023-02-27 15:58:59 +01:00
parent 8c97a5a416
commit aafe28c0e0
1 changed files with 9 additions and 9 deletions
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14
ppg.cpp
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@ -27,7 +27,7 @@ int main(){
} }
cv::CascadeClassifier faceDetector; cv::CascadeClassifier faceDetector;
if(!faceDetector.load("./haarcascade_frontalface_alt.xml")) if(!faceDetector.load("./haarcascade_frontalface_alt.xml"))//Testing to see if cascade_frontalface.xml is available (necessary for the program to work)
{ {
std::cerr<<"[ERROR] Unable to load face cascade"<<std::endl; std::cerr<<"[ERROR] Unable to load face cascade"<<std::endl;
return -1; return -1;
@ -35,7 +35,7 @@ int main(){
while (true) while (true)
{ {
if(isDiscardData) if(isDiscardData) //This function delays the beginning of the analysis of the data
{ {
countDiscard++; countDiscard++;
if (countDiscard == DISCARD_DURATION*FPS) if (countDiscard == DISCARD_DURATION*FPS)
@ -51,22 +51,22 @@ int main(){
cap.read(frame); cap.read(frame);
//Check if we succeeded //Check if we succeeded
if (frame.empty()) if (frame.empty()) //If the camera records a blank frame, returns an error.
{ {
std::cerr<<"[ERROR] Blank frame grabbed"<<std::endl; std::cerr<<"[ERROR] Blank frame grabbed"<<std::endl;
break; break;
} }
cv::imshow("Color", frame); cv::imshow("Color", frame); //shows the colored frame
if (cv::waitKey(1000.0/FPS)>=0) if (cv::waitKey(1000.0/FPS)>=0) //Stops after 1000/FPS frames
{ {
break; break;
} }
cv::Mat frame_gray; cv::Mat frame_gray;
cv::cvtColor(frame, frame_gray, cv::COLOR_BGR2GRAY); cv::cvtColor(frame, frame_gray, cv::COLOR_BGR2GRAY);
cv::imshow("Gray", frame_gray); cv::imshow("Gray", frame_gray); //Shows frame in greyscale
std::vector<cv::Rect> faceRectangles; std::vector<cv::Rect> faceRectangles;
faceDetector.detectMultiScale(frame_gray, faceRectangles, 1.1, 3, 0, cv::Size(20,20)); faceDetector.detectMultiScale(frame_gray, faceRectangles, 1.1, 3, 0, cv::Size(20,20)); //Detects face
} }
} }
} }