class HeartRateImposer(object):
def __init__(self, from_file, opencv_path):
self.from_file = from_file
self.opencv_path = opencv_path
self.hrg = HeartRateGenerator(avi_file=self.from_file)
self.vhrg = VideoHeartrateGenerator()
def gen_heartrate_frames(self, age, gender):
return self.heartrate_frames(age, gender, False)
def pipe_heartrate_frames(self, age, gender):
self.heartrate_frames(age, gender, True)
def heartrate_frames(self, age, gender, pipe):
face_tracker = SmoothFaceTracker(self.opencv_path)
# face_cascade = cv2.CascadeClassifier(self.opencv_path +
# 'data/haarcascades/haarcascade_frontalface_default.xml')
cap = cv2.VideoCapture(self.from_file)
w = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
h = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
fourcc = int(cap.get(cv2.CAP_PROP_FOURCC))
fps = cap.get(cv2.CAP_PROP_FPS)
print "FPS" + str(fps)
if pipe:
sys.stdout.write(str(w) + " " + str(h) + " " + str(fps) + '\n')
else:
yield str(w) + " " + str(h) + " " + str(fps) + '\n'
frame_count = 0
heartrate = None
heartrate_time = 0
heartrate_gen = self.hrg.gen_heartrates()
# will not be lower or higher (if not rip)
current_max = -1.0
current_min = 300.0
if age and gender:
print "Imposing medical information"
age = int(age)
mhr = round(float(self.calculate_max_heartrate(age, gender)), 1)
while True:
# Read frame from video capture
ret, frame = cap.read()
if not ret or frame is None:
break
# Only generate a new heartrate every second
frame_count += 1
time = int(frame_count / fps)
# heartrates are cut off at the end of the video a there are not enough
# readings to average them so if this occurs, just stop generating them
if time > heartrate_time:
heartrate = heartrate_gen.next()
heartrate_time = time
if heartrate > 0:
if heartrate > current_max:
current_max = heartrate
elif heartrate < current_min:
current_min = heartrate
# gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# faces = face_cascade.detectMultiScale(gray, 1.3, 5)
face, interesting_pixels = face_tracker.detect_face(frame)
# if len(faces) == 1:
if face is not None:
# (x, y, w, h) = faces[0]
(x, y, w, h) = face
self.vhrg.add_sample(interesting_pixels)
heartrate_from_vhrg = self.vhrg.get_heartrate()
if heartrate_from_vhrg is not None:
heartrate_from_vhrg = round(heartrate_from_vhrg, 1)
else:
heartrate_from_vhrg = "---"
cv2.rectangle(frame, (x,y), (x+w,y+h), (0,0,255), 2)
heartrate_text = round(heartrate, 1) if heartrate else '---'
cv2.putText(frame, str(heartrate_text) + ' bpm', (x+(w*1)/4, y+h+20),
cv2.FONT_HERSHEY_SIMPLEX, 0.75, (0, 0, 255), 2)
vhrg_text = "FROM VIDEO: " + str(heartrate_from_vhrg)
cv2.putText(frame, vhrg_text, (50,50), cv2.FONT_HERSHEY_SIMPLEX, 0.75, (0, 100, 255), 2)
if age and gender:
intensity = round(float(self.calculate_exercise_intensity(heartrate, mhr)), 1)
if intensity < 0:
intensity = '---'
intensity = str(intensity)
cmax = str(round(float(current_max), 1)) if current_max != -1.0 else '---'
cmin = str(round(float(current_min), 1)) if current_min != 300.0 else '---'
cv2.putText(frame, 'Max. Heart Rate: ' + str(mhr) + ' bpm',
(10, 20), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 1)
cv2.putText(frame, 'Intensity: ' + str(intensity) + '%',
(10, 40), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 1)
cv2.putText(frame, 'Current Max. Heart Rate: ' + cmax + ' bpm',
(10, 60), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 1)
cv2.putText(frame, 'Current Min. Heart Rate: ' + cmin + ' bpm',
(10, 80), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 1)
else:
self.vhrg.lost_face()
if pipe:
sys.stdout.write(frame.tostring())
else:
yield frame.tostring()
cap.release()
cv2.destroyAllWindows()
def calculate_max_heartrate(self, age, gender):
if gender == 'male':
return 203.7 / (1 + pow(2.718282, 0.033 * (age - 104.3)))
else:
return 190.2 / (1 + pow(2.718282, 0.0453 * (age - 107.5)))
def calculate_exercise_intensity(self, heartrate, max_heartrate):
if heartrate:
return heartrate / max_heartrate
return -1
def __init__(self, from_file, opencv_path):
self.from_file = from_file
self.opencv_path = opencv_path
self.hrg = HeartRateGenerator(avi_file=self.from_file)
self.vhrg = VideoHeartrateGenerator()
def __init__(self, from_file, opencv_path): self.from_file = from_file self.opencv_path = opencv_path self.hrg = HeartRateGenerator(avi_file=self.from_file) self.vhrg = VideoHeartrateGenerator()
class HeartRateImposer(object):
def __init__(self, from_file, opencv_path):
self.from_file = from_file
self.opencv_path = opencv_path
self.hrg = HeartRateGenerator(avi_file=self.from_file)
self.vhrg = VideoHeartrateGenerator()
def gen_heartrate_frames(self, age, gender):
return self.heartrate_frames(age, gender, False)
def pipe_heartrate_frames(self, age, gender):
self.heartrate_frames(age, gender, True)
def heartrate_frames(self, age, gender, pipe):
face_tracker = SmoothFaceTracker(self.opencv_path)
# face_cascade = cv2.CascadeClassifier(self.opencv_path +
# 'data/haarcascades/haarcascade_frontalface_default.xml')
cap = cv2.VideoCapture(self.from_file)
w = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
h = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
fourcc = int(cap.get(cv2.CAP_PROP_FOURCC))
fps = cap.get(cv2.CAP_PROP_FPS)
print "FPS" + str(fps)
if pipe:
sys.stdout.write(str(w) + " " + str(h) + " " + str(fps) + '\n')
else:
yield str(w) + " " + str(h) + " " + str(fps) + '\n'
frame_count = 0
heartrate = None
heartrate_time = 0
heartrate_gen = self.hrg.gen_heartrates()
# will not be lower or higher (if not rip)
current_max = -1.0
current_min = 300.0
if age and gender:
print "Imposing medical information"
age = int(age)
mhr = round(float(self.calculate_max_heartrate(age, gender)), 1)
while True:
# Read frame from video capture
ret, frame = cap.read()
if not ret or frame is None:
break
# Only generate a new heartrate every second
frame_count += 1
time = int(frame_count / fps)
# heartrates are cut off at the end of the video a there are not enough
# readings to average them so if this occurs, just stop generating them
if time > heartrate_time:
heartrate = heartrate_gen.next()
heartrate_time = time
if heartrate > 0:
if heartrate > current_max:
current_max = heartrate
elif heartrate < current_min:
current_min = heartrate
# gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# faces = face_cascade.detectMultiScale(gray, 1.3, 5)
face, interesting_pixels = face_tracker.detect_face(frame)
# if len(faces) == 1:
if face is not None:
# (x, y, w, h) = faces[0]
(x, y, w, h) = face
self.vhrg.add_sample(interesting_pixels)
heartrate_from_vhrg = self.vhrg.get_heartrate()
if heartrate_from_vhrg is not None:
heartrate_from_vhrg = round(heartrate_from_vhrg, 1)
else:
heartrate_from_vhrg = "---"
cv2.rectangle(frame, (x, y), (x + w, y + h), (0, 0, 255), 2)
heartrate_text = round(heartrate, 1) if heartrate else '---'
cv2.putText(frame,
str(heartrate_text) + ' bpm',
(x + (w * 1) / 4, y + h + 20),
cv2.FONT_HERSHEY_SIMPLEX, 0.75, (0, 0, 255), 2)
vhrg_text = "FROM VIDEO: " + str(heartrate_from_vhrg)
cv2.putText(frame, vhrg_text, (50, 50),
cv2.FONT_HERSHEY_SIMPLEX, 0.75, (0, 100, 255), 2)
if age and gender:
intensity = round(
float(self.calculate_exercise_intensity(
heartrate, mhr)), 1)
if intensity < 0:
intensity = '---'
intensity = str(intensity)
cmax = str(round(float(current_max),
1)) if current_max != -1.0 else '---'
cmin = str(round(float(current_min),
1)) if current_min != 300.0 else '---'
cv2.putText(frame, 'Max. Heart Rate: ' + str(mhr) + ' bpm',
(10, 20), cv2.FONT_HERSHEY_SIMPLEX, 0.5,
(0, 0, 255), 1)
cv2.putText(frame, 'Intensity: ' + str(intensity) + '%',
(10, 40), cv2.FONT_HERSHEY_SIMPLEX, 0.5,
(0, 0, 255), 1)
cv2.putText(frame,
'Current Max. Heart Rate: ' + cmax + ' bpm',
(10, 60), cv2.FONT_HERSHEY_SIMPLEX, 0.5,
(0, 0, 255), 1)
cv2.putText(frame,
'Current Min. Heart Rate: ' + cmin + ' bpm',
(10, 80), cv2.FONT_HERSHEY_SIMPLEX, 0.5,
(0, 0, 255), 1)
else:
self.vhrg.lost_face()
if pipe:
sys.stdout.write(frame.tostring())
else:
yield frame.tostring()
cap.release()
cv2.destroyAllWindows()
def calculate_max_heartrate(self, age, gender):
if gender == 'male':
return 203.7 / (1 + pow(2.718282, 0.033 * (age - 104.3)))
else:
return 190.2 / (1 + pow(2.718282, 0.0453 * (age - 107.5)))
def calculate_exercise_intensity(self, heartrate, max_heartrate):
if heartrate:
return heartrate / max_heartrate
return -1
