drawsiness.py compleate

drawsiness.py

from scipy.spatial import distance as dist
from imutils.video import VideoStream
from imutils import face_utils
from threading import Thread
import numpy as np
import playsound
import argparse
import imutils
import time
import dlib
import cv2


def sound_alarm(path):
    playsound.playsound(path)


def eye_aspect_ratio(eye):
    A = dist.euclidean(eye[1], eye[5])
    B = dist.euclidean(eye[2], eye[4])
    C = dist.euclidean(eye[0], eye[3])
    ear = (A + B) / (2.0 * C)
    return ear


ap = argparse.ArgumentParser()
ap.add_argument(
    "-p", "--shape-predictor", required=True, help="path to facial landmark predictor"
)
ap.add_argument("-a", "--alarm", type=str, default="", help="path alarm .WAV file")
ap.add_argument("-w", "--webcam", type=int, default=0, help="index of webcam on system")
args = vars(ap.parse_args())

EYE_AR_THRESH = 0.3
EYE_AR_CONSEC_FRAMES = 48

COUNTER = 0
ALARM_ON = False

print("[INFO] loading facial landmark predictor...")
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor(args["shape_predictor"])

(lStart, lEnd) = face_utils.FACIAL_LANDMARKS_IDXS["left_eye"]
(rStart, rEnd) = face_utils.FACIAL_LANDMARKS_IDXS["right_eye"]

print("[INFO] starting video stream thread...")
vs = VideoStream(src=args["webcam"]).start()
time.sleep(1.0)

while True:
    frame = vs.read()
    frame = imutils.resize(frame, width=450)
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    rects = detector(gray, 0)
    for rect in rects:
        shape = predictor(gray, rect)
        shape = face_utils.shape_to_np(shape)
        leftEye = shape[lStart:lEnd]
        rightEye = shape[rStart:rEnd]
        leftEAR = eye_aspect_ratio(leftEye)
        rightEAR = eye_aspect_ratio(rightEye)
        ear = (leftEAR + rightEAR) / 2.0
        leftEyeHull = cv2.convexHull(leftEye)
        rightEyeHull = cv2.convexHull(rightEye)
        cv2.drawContours(frame, [leftEyeHull], -1, (0, 255, 0), 1)
        cv2.drawContours(frame, [rightEyeHull], -1, (0, 255, 0), 1)
        if ear < EYE_AR_THRESH:
            COUNTER += 1
            if COUNTER >= EYE_AR_CONSEC_FRAMES:
                if not ALARM_ON:
                    ALARM_ON = True
                    if args["alarm"] != "":
                        t = Thread(target=sound_alarm, args=(args["alarm"],))
                        t.deamon = True
                        t.start()
                        cv2.putText(
                            frame,
                            "WAKE UP!!",
                            (10, 30),
                            cv2.FONT_HERSHEY_SIMPLEX,
                            0.7,
                            (0, 0, 255),
                            2,
                        )
    else: 
		    COUNTER = 0
		    ALARM_ON = False
		    cv2.putText(frame, "EAR: {:.2f}".format(ear), (300, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (0, 0, 255), 2,)
		    v2.imshow("Frame", frame)
		    key = cv2.waitKey(1) & 0xFF
		    if key == ord("q"):
                           break
cv2.destroyAllWindows()
vs.stop()