我正在使用 python 代码拍摄照片,如果某些面部地标(dlib 的)之间的距离有条件,实际上是点 1 和点 29 之间的距离除以点 17 和点 29 的距离介于 1.1 和 .9 之间,那么应该拍照,这是地标的图表和我正在工作的代码
COUNTER = 0
TOTAL = 0
shape_predictor= "shape_predictor_68_face_landmarks.dat" #dace_landmark
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor(shape_predictor)
(mStart, mEnd) = face_utils.FACIAL_LANDMARKS_IDXS["mouth"]
(lStart, lEnd) = face_utils.FACIAL_LANDMARKS_IDXS["left_eye"]
(rStart, rEnd) = face_utils.FACIAL_LANDMARKS_IDXS["right_eye"]
(jStart,jEnd) = face_utils.FACIAL_LANDMARKS_IDXS["jaw"]
(reStart,reEnd) = face_utils.FACIAL_LANDMARKS_IDXS["right_eyebrow"]
(leStart,leEnd)= face_utils.FACIAL_LANDMARKS_IDXS["left_eyebrow"]
(nStart,nEnd)= face_utils.FACIAL_LANDMARKS_IDXS["nose"]
#video que vamos a procesar
print("[INFO] starting video stream thread...")
vs = VideoStream(src=0).start()
fileStream = False
time.sleep(1.0)
fps= FPS().start()
cv2.namedWindow("test")
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)
mouth= shape[mStart:mEnd]
left_eye= shape[lStart:lEnd]
right_eye = shape[rStart:rEnd]
jaw = shape[jStart:jEnd]
right_eyebrow = shape[reStart:reEnd]
left_eyebrow = shape[leStart:leEnd]
nose = shape[nStart:nEnd]
#here is where i need help
l1= what do i need to put here?
l2 = what do i need to put here?
ratio = l1/l2
mouthHull = cv2.convexHull(mouth)
left_eyeHull = cv2.convexHull(left_eye)
right_eyehHull = cv2.convexHull(right_eye)
jawhHull = cv2.convexHull(jaw)
right_eyebrowHull = cv2.convexHull(right_eyebrow)
noseHull = cv2.convexHull(nose)
left_eyebrowHull = cv2.convexHull(left_eyebrow)
#print(shape)
cv2.drawContours(frame, [mouthHull,left_eyeHull, right_eyehHull, jawhHull, right_eyebrowHull, noseHull, left_eyebrowHull], -1, (0, 255, 0), 1)
if ratio <= .9 or mar > 1.1 :
COUNTER += 1
else:
if COUNTER >= 15:
TOTAL += 1
frame = vs.read()
time.sleep(.3)
frame2= frame.copy()
img_name = "opencv_frame_{}.png".format(TOTAL)
#cv2.imwrite(img_name, frame)
print("{} written!".format(img_name))
COUNTER = 0
cv2.putText(frame, "the ratio from l1 and l2 is: {}".format(distance), (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 2)
cv2.imshow("Frame", frame)
fps.update()
key2 = cv2.waitKey(1) & 0xFF
if key2 == ord('q'):
break
fps.stop()
cv2.destroyAllWindows()
vs.stop()
现在我的问题是我不知道如何计算两个地标之间的距离,我在代码中放了一条我需要帮助的评论。
如果你们中的任何人可以帮助我,我将不胜感激,在此先感谢