02. Face_Mesh_Module.py

import cv2
import mediapipe as mp
import time
class FaceMeshDetector():

def __init__(self, staticMode=False, maxFaces=2, minDetectionCon=0.5, minTrackCon=0.5):

self.staticMode = staticMode
self.maxFaces = maxFaces
self.minDetectionCon = minDetectionCon
self.minTrackCon = minTrackCon

self.mpDraw = mp.solutions.drawing_utils
self.mpFaceMesh = mp.solutions.face_mesh
self.faceMesh = self.mpFaceMesh.FaceMesh(self.staticMode, self.maxFaces,
self.minDetectionCon, self.minTrackCon)
self.drawSpec = self.mpDraw.DrawingSpec(thickness=1, circle_radius=2)

def findFaceMesh(self, img, draw=True):
self.imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
self.results = self.faceMesh.process(self.imgRGB)
faces = []
if self.results.multi_face_landmarks:
for faceLms in self.results.multi_face_landmarks:
if draw:
self.mpDraw.draw_landmarks(img, faceLms, self.mpFaceMesh.FACE_CONNECTIONS,
self.drawSpec, self.drawSpec)
face = []
for id,lm in enumerate(faceLms.landmark):
#print(lm)
ih, iw, ic = img.shape
x,y = int(lm.x*iw), int(lm.y*ih)
#cv2.putText(img, str(id), (x, y), cv2.FONT_HERSHEY_PLAIN,
# 0.7, (0, 255, 0), 1)

#print(id,x,y)
face.append([x,y])
faces.append(face)
return img, faces

def main():
cap = cv2.VideoCapture(“Videos/1.mp4”)
pTime = 0
detector = FaceMeshDetector(maxFaces=2)
while True:
success, img = cap.read()
img, faces = detector.findFaceMesh(img)
if len(faces)!= 0:
print(faces[0])
cTime = time.time()
fps = 1 / (cTime – pTime)
pTime = cTime
cv2.putText(img, f’FPS: {int(fps)}’, (20, 70), cv2.FONT_HERSHEY_PLAIN,
3, (0, 255, 0), 3)
cv2.imshow(“Image”, img)
cv2.waitKey(1)

if __name__ == “__main__”:
main()