#?Command?line?parameters
#?python?Wink.py?--shape-predictor?shape_predictor_68_face_landmarks.dat?--video?your?videoname.mp4
#?python?Wink.py?--shape-predictor?shape_predictor_68_face_landmarks.dat

#?import?the?necessary?packages
from?scipy.spatial?import?distance?as?dist
from?imutils.video?import?FileVideoStream
from?imutils.video?import?VideoStream
from?imutils?import?face_utils
import?numpy?as?np
import?argparse
import?imutils
import?time
import?dlib
import?cv2

def?eye_aspect_ratio（eye）:
	#?compute?the?euclidean?distances?between?the?two?sets?of
	#?vertical?eye?landmarks?（x?y）-coordinates
	A?=?dist.euclidean（eye[1]?eye[5]）
	B?=?dist.euclidean（eye[2]?eye[4]）

	#?compute?the?euclidean?distance?between?the?horizontal
	#?eye?landmark?（x?y）-coordinates
	C?=?dist.euclidean（eye[0]?eye[3]）

	#?compute?the?eye?aspect?ratio
	ear?=?（A?+?B）?/?（2.0?*?C）

	#?return?the?eye?aspect?ratio
	return?ear
?
#?construct?the?argument?parse?and?parse?the?arguments
ap?=?argparse.ArgumentParser（）
ap.add_argument（“-p“?“--shape-predictor“?required=True
	help=“path?to?facial?landmark?predictor“）
ap.add_argument（“-v“?“--video“?type=str?default=““
	help=“path?to?input?video?file“）
args?=?vars（ap.parse_args（））
?
#?define?two?constants?one?for?the?eye?aspect?ratio?to?indicate
#?blink?and?then?a?second?constant?for?the?number?of?consecutive
#?frames?the?eye?must?be?below?the?threshold
EYE_AR_THRESH?=?0.25
EYE_AR_CONSEC_frameS?=?2

#?initialize?the?frame?counters?and?the?total?number?of?blinks
COUNTER?=?0
TOTAL?=?0

#?initialize?dlib‘s?face?detector?（HOG-based）?and?then?create
#?the?facial?landmark?predictor
print（“[INFO]?loading?facial?landmark?predictor...“）
detector?=?dlib.get_frontal_face_detector（）
predictor?=?dlib.shape_predictor（args[“shape_predictor“]）

#?grab?the?indexes?of?the?facial?landmarks?for?the?left?and
#?right?eye?respectively
（lStart?lEnd）?=?face_utils.FACIAL_LANDMARKS_IDXS[“left_eye“]
（rStart?rEnd）?=?face_utils.FACIAL_LANDMARKS_IDXS[“right_eye“]

#?start?the?video?stream?thread
print（“[INFO]?starting?video?stream?thread...“）
#vs?=?FileVideoStream（args[“video“]）.start（）
fileStream?=?True
vs?=?VideoStream（src=0）.start（）

fileStream?=?False
time.sleep（1.0）

#?loop?over?frames?from?the?video?stream
while?True:
	#?if?this?is?a?file?video?stream?then?we?need?to?check?if
	#?there?any?more?frames?left?in?the?buffer?to?process
	if?fileStream?and?not?vs.more（）:
		break

	#?grab?the?frame?from?the?threaded?video?file?stream?resize
	#?it?and?convert?it?to?grayscale
	#?channels）
	frame?=?vs.read（）
	frame?=?imutils.resize（frame?width=450）
	gray?=?cv2.cvtColor（frame?cv2.COLOR_BGR2GRAY）

	#?detect?faces?in?the?grayscale?frame
	rects?=?detector（gray?0）

	#?loop?over?the?face?detections
	for?rect?in?rects:
		#?determine?the?facial?landmarks?for?the?face?region?then
		#?convert?the?facial?landmark?（x?y）-coordinates?to?a?NumPy
		#?array
		shape?=?predictor（gray

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???99693937??2017-03-03?03:40??shape_predictor_68_face_landmarks.dat

?????文件???????4862??2017-11-12?10:14??Wink.py

?????文件?????118229??2017-11-12?10:46??教程.docx

-----------?---------??----------?-----??----

?????????????99817028????????????????????3