mediapipe安装与使用

一、安装python 3.7以上版本，下载地址：https://www.python.org/getit/





二、安装mediapipe
首先安装opencv,终端执行

pip install opencv-contrib-python

然后安装mediapipe，终端执行

pip install mediapipe

即可安装mediapipe
三、代码测试
新建一个hands.py，将下m面代码粘贴进去并保存，然后终端执行python hand.py

import cv2
import mediapipe as mp
import time

cap = cv2.VideoCapture(0)

mpHands = mp.solutions.hands
hands = mpHands.Hands()
mpDraw = mp.solutions.drawing_utils

pTime = 0
cTime = 0

while True:
    success, img = cap.read()
    imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)  # 2 = to
    results = hands.process(imgRGB)
    # print(results.multi_hand_landmarks)//检查手坐标输出
    if results.multi_hand_landmarks:
        for handLms in results.multi_hand_landmarks:
            for id, lm in enumerate(handLms.landmark):
                # print(id, lm)
                h, w, c = img.shape
                cx, cy = int(lm.x * w), int(lm.y * h)
                print(id, cx, cy)
                # if id == 4:
                cv2.circle(img, (cx, cy), 15, (255, 0, 255), cv2.FILLED)
            mpDraw.draw_landmarks(img, handLms, mpHands.HAND_CONNECTIONS)

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

    cv2.putText(img, str(int(fps)), (10, 70), cv2.FONT_HERSHEY_PLAIN, 3,
                (255, 255, 255), 2)

    cv2.imshow("Image", img)
    cv2.waitKey(1)