import cv2 as cv
import datetime
import numpy as np
def rescaleFrame(frame,scale=0.9):
width=int(frame.shape[1]*scale)
height=int(frame.shape[0]*scale)
dimension=(width,height)
return cv.resize(frame,dimension,interpolation=cv.INTER_AREA)
haar_cascade=cv.CascadeClassifier(r'C:\Users\Parth\Desktop\Project-III\faces.xml')
people = ['Parth Parlikar', 'Pradnya Parlikar','Rajiv Parlikar']
face_recognizer=cv.face.LBPHFaceRecognizer_create()
face_recognizer.read(r'C:\Users\Parth\Desktop\Project-III\face_trained.yml')
file = open(r'C:\Users\Parth\Desktop\face.txt', 'a')
capture = cv.VideoCapture(1)
while True:
isTrue,frame=capture.read()
haar_cascade=cv.CascadeClassifier('faces.xml')
faces_rect=haar_cascade.detectMultiScale(frame, scaleFactor=1.1, minNeighbors=8)
gray=cv.cvtColor(frame, cv.COLOR_BGR2GRAY)
#print(f"Number of faces found = {len(faces_rect)}")
cnt = len(faces_rect)
for (x,y,w,h) in faces_rect:
faces_roi=gray[y:y+h, x:x+h]
label, confidence = face_recognizer.predict(faces_roi)
print(f'Label={people[label]} with a confidence of {confidence}')
for i in range (0,cnt):
cv.putText(frame, str(people[label]),(i*400,40), cv.FONT_HERSHEY_COMPLEX, 1.0, (0,255,0), thickness=2)
cv.rectangle(frame,(x,y), (x+w, y+h), (0,255,0), thickness=2)
cv.imshow('video',frame)
file.write(people[label])
file.write(str(confidence))
file.write(str(datetime.datetime.now()))
file.write("\n")
if cv.waitKey(20) & 0xFF==ord('d'):
break
cv.imshow('Detected faces', frame)
file.close()
cv.waitKey(0)
In the code i get the following error:
Exception has occurred: NameError
name 'label' is not defined
File "C:\Users\Parth\Desktop\Project-III\face_recog_video_PROTOTYPE.py", line 41, in <module>
file.write(people[label])
^^^^^
NameError: name 'label' is not defined
How can label be not defined when its literally defined above? Also the code was running perfectly fine few minutes ago.
>Solution :
for (x,y,w,h) in faces_rect:
faces_roi=gray[y:y+h, x:x+h]
label, confidence = face_recognizer.predict(faces_roi)
print(f'Label={people[label]} with a confidence of {confidence}')
for i in range (0,cnt):
cv.putText(frame, str(people[label]),(i*400,40), cv.FONT_HERSHEY_COMPLEX, 1.0, (0,255,0), thickness=2)
cv.rectangle(frame,(x,y), (x+w, y+h), (0,255,0), thickness=2)
cv.imshow('video',frame)
file.write(people[label])
file.write(str(confidence))
file.write(str(datetime.datetime.now()))
file.write("\n")
label is defined inside the for loop, it could be that there are no faces_rect and label ends up not being defined.
Add print statements and check.
Maybe you wanted to indent the last part of the code?
for (x,y,w,h) in faces_rect:
faces_roi=gray[y:y+h, x:x+h]
label, confidence = face_recognizer.predict(faces_roi)
print(f'Label={people[label]} with a confidence of {confidence}')
for i in range (0,cnt):
cv.putText(frame, str(people[label]),(i*400,40), cv.FONT_HERSHEY_COMPLEX, 1.0, (0,255,0), thickness=2)
cv.rectangle(frame,(x,y), (x+w, y+h), (0,255,0), thickness=2)
cv.imshow('video',frame)
file.write(people[label])
file.write(str(confidence))
file.write(str(datetime.datetime.now()))
file.write("\n")