handTrackingModule.py

import cv2
import mediapipe as mp
import time


class handDetector():
    def __init__(self, mode=False, maxHands=2, detection_con=0.5, tracking_con=0.5):
        self.mode = mode
        self.maxHands = maxHands
        self.detection_con = detection_con
        self.tracking_con = tracking_con
        self.mpHands = mp.solutions.hands
        self.hands = self.mpHands.Hands(self.mode, self.maxHands, self.detection_con, self.tracking_con)
        self.mpDraw = mp.solutions.drawing_utils

    def findHands(self, img, draw=True):
        imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
        self.results = self.hands.process(imgRGB)
        if self.results.multi_hand_landmarks:
            for handlms in self.results.multi_hand_landmarks:
                if draw:
                    self.mpDraw.draw_landmarks(img, handlms, self.mpHands.HAND_CONNECTIONS)
        return img

    def findPosition(self, img, handNO=0, draw=True):
        lmlist = []
        if self.results.multi_hand_landmarks:
            # if len(self.results.multi_hand_landmarks) <= handNO+1:
            myhand = self.results.multi_hand_landmarks[handNO]
            for id, lm in enumerate(myhand.landmark):
                h, w, c = img.shape
                cx, cy = int(lm.x * w), int(lm.y * h)
                lmlist.append([id, cx, cy])
                if draw:
                    cv2.putText(img, str(id), (cx, cy), cv2.FONT_HERSHEY_PLAIN, 1, (0, 0, 0), 2)

        return lmlist


def main():
    pTime = 0
    cTime = 0
    cap = cv2.VideoCapture(0)
    detector = handDetector()
    while True:
        success, img = cap.read()
        img = detector.findHands(img)
        lmlist = detector.findPosition(img)
        cTime = time.time()
        fps = 1 / (cTime - pTime)
        pTime = cTime
        cv2.putText(img, str(int(fps)), (10, 70), cv2.FONT_HERSHEY_COMPLEX, 2, (255, 0, 255), 2)
        cv2.imshow("image", img)
        k = cv2.waitKey(1) & 0xFF == ord('q')
        if k:
            break


if __name__ == '__main__':
    main()