HandTrackingModule.py

import cv2
import mediapipe as mp
import time



class handDetector():
    def __init__(self,mode=False,maxHands=2,detectionCon=0.8,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(
            static_image_mode=self.mode,
            max_num_hands=self.maxHands,
            min_detection_confidence=self.detectionCon,
            min_tracking_confidence=self.trackCon
        )

        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)
        # 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 findPostion(self, img, handNo=0, draw=True):
        lmList=[]
        if self.results.multi_hand_landmarks:
            myHands = self.results.multi_hand_landmarks[handNo]
            for id, lm in enumerate(myHands.landmark):
                # print(id,lm)
                h, w, c = img.shape
                cx, cy = int(lm.x * w), int(lm.y * h)
                lmList.append([id,cx,cy])
                if draw:
                    cv2.circle(img, (cx, cy), 8, (0, 225, 0), cv2.FILLED)
        return lmList



def main():
    pTime = 0
    cTime = 0
    cap = cv2.VideoCapture(0)
    detector=handDetector()
    while True:
        success, img = cap.read()
        img = cv2.flip(img, 1)
        img = detector.findHands(img)
        lmList = detector.findPostion(img)
        if len(lmList) != 0:
            print(lmList)
        else:
            print("no hands")

        cTime = time.time()

        cTime = time.time()
        fps = 1 / (cTime - pTime)
        pTime = cTime
        cv2.putText(img, f'FPS: {int(fps)}', (10, 70), cv2.FONT_HERSHEY_PLAIN, 1, (0, 255, 0), 2)
        cv2.imshow("Image", img)
        cv2.waitKey(1)





if __name__=="__main__":
    main()