face gesture.py

import cv2
import mediapipe as mp
import time
NUM_FACE = 2


class FaceLandMarks():
    def __init__(self, staticMode=False,maxFace=NUM_FACE, minDetectionCon=0.5, minTrackCon=0.5):
        self.staticMode = staticMode
        self.maxFace =  maxFace
        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.maxFace, self.minDetectionCon, self.minTrackCon)
        self.drawSpec = self.mpDraw.DrawingSpec(thickness=1, circle_radius=1)

    def findFaceLandmark(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_SIMPLEX, 0.3, (0,255,0), 1)
                    #print(id, x, y)
                    face.append([x,y])
                faces.append(face)
        return img, faces


def main():
    cap = cv2.VideoCapture(0)
    pTime = 0
    detector = FaceLandMarks()
    while True:
        success, img = cap.read()
        img, faces = detector.findFaceLandmark(img)
        if len(faces)!=0:
            print(len(faces))
        cTime = time.time()
        fps = 1 / (cTime - pTime)
        pTime = cTime
        cv2.putText(img, f'FPS:{int(fps)}', (20, 70), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)
        cv2.imshow("Test", img)
        cv2.waitKey(1)


if __name__ == "__main__":
    main()