handTrackingModule.py

import cv2 as cv
import mediapipe as mp
import time


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

    
    def findHands(self, img, draw=True):
        imgRGB = cv.cvtColor(img, cv.COLOR_BGR2RGB)
        self.results = self.hands.process(imgRGB)
        # print(results.multi_hand_landmarks)

        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):
        xList = []
        yList = []
        bbox = []
        self.lmList = []
        if self.results.multi_hand_landmarks:
            myHand = self.results.multi_hand_landmarks[handNo]
            for id, lm in enumerate(myHand.landmark):
                # print(id, lm)
                h, w, c = img.shape
                cx, cy = int(lm.x * w), int(lm.y * h)
                xList.append(cx)
                yList.append(cy)
                # print(id, cx, cy)
                self.lmList.append([id, cx, cy])
                if draw:
                    cv.circle(img, (cx, cy), 5, (0, 255, 0), cv.FILLED)  
        
        return self.lmList

def main():
    pTime = 0
    cTime = 0
    cap = cv.VideoCapture(0)
    detector = handDetector()
    while True:
        success, img = cap.read()
        img = detector.findHands(img)
        lmlist = detector.findPosition(img)
        if len(lmlist) !=0:
            print(lmlist[4])


        cTime = time.time()
        fps = 1/(cTime-pTime)
        pTime = cTime

        cv.putText(img,str(int(fps)), (10,70), cv.FONT_HERSHEY_COMPLEX_SMALL,3,(0,255,0), 3)

        cv.imshow('Image', img)
        cv.waitKey(1)


if __name__ == "__main__":
    main()