import cv2 import sys

faceCascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

video_capture = cv2.VideoCapture(0)

img_counter = 0

while True: # Capture frame-by-frame ret, frame = video_capture.read()

gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
k = cv2.waitKey(1)
faces = faceCascade.detectMultiScale(
    gray,
    scaleFactor=1.5,
    minNeighbors=5,
    minSize=(30, 30),
    flags=cv2.CASCADE_SCALE_IMAGE
)

# Draw a rectangle around the faces
for (x, y, w, h) in faces:
    cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 255, 0), 2)

# Display the resulting frame
cv2.imshow('FaceDetection', frame)

if k%256 == 27: #ESC Pressed
    break
elif k%256 == 32:
    # SPACE pressed
    img_name = "facedetect_webcam_{}.png".format(img_counter)
    cv2.imwrite(img_name, frame)
    print("{} written!".format(img_name))
    img_counter += 1

When everything is done, release the capture

video_capture.release() cv2.destroyAllWindows()

running the code works fine, but after i try to installed CMake and dlib library which i failed to do the image of the webcam is distorted and python stop working

Code:

import cv2
import sys
 
sys

faceCascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
 
cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

video_capture = cv2.VideoCapture(0)
 
cv2.VideoCapture(0)

img_counter = 0
 
0

while True:
    # Capture frame-by-frame
    ret, frame = video_capture.read()
 
video_capture.read()


    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
 k = cv2.waitKey(1)
 faces = faceCascade.detectMultiScale(
     gray,
     scaleFactor=1.5,
     minNeighbors=5,
     minSize=(30, 30),
     flags=cv2.CASCADE_SCALE_IMAGE
 )

 # Draw a rectangle around the faces
 for (x, y, w, h) in faces:
     cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 255, 0), 2)

 # Display the resulting frame
 cv2.imshow('FaceDetection', frame)

 if k%256 == 27: #ESC Pressed
     break
 elif k%256 == 32:
     # SPACE pressed
     img_name = "facedetect_webcam_{}.png".format(img_counter)
     cv2.imwrite(img_name, frame)
     print("{} written!".format(img_name))
     img_counter += 1
 

# When everything is done, release the capture
 
capture
video_capture.release()
cv2.destroyAllWindows()cv2.destroyAllWindows()

running the code works fine, but after i try to installed CMake and dlib library which i failed to do the image of the webcam is distorted and python stop working