Python+OpenCV手势检测与识别Mediapipe基础篇

pip install mediapipe==0.8.9.1

import cv2

cap = cv2.VideoCapture(0)       #OpenCV摄像头调用：0=内置摄像头（笔记本）   1=USB摄像头-1  2=USB摄像头-2

while True:
    success, img = cap.read()
    imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)       #cv2图像初始化
    cv2.imshow("HandsImage", img)       #CV2窗体
    cv2.waiTKEy(1)      #关闭窗体

#定义并引用mediapipe中的hands模块
mpHands = mp.solutions.hands
hands = mpHands.Hands()
mpDraw = mp.solutions.drawing_utils

while True:
    success, img = cap.read()
    imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)       #cv2图像初始化
    results = hands.process(imgRGB)
    # print(results.multi_hand_landmarks)
    
    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)
            
            #绘制手部特征点：
            mpDraw.draw_landmarks(img, handLms, mpHands.HAND_CONNECTIONS)

import time

#帧率时间计算
pTime = 0
cTime = 0

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

    cv2.putText(img, str(int(fps)), (10, 70), cv2.FONT_HERSHEY_PLAIN, 3,
                (255, 0, 255), 3)       #FPS的字号，颜色等设置

# coding BIGBOSSyifi
# Datatime:2022/4/24 21:41
# Filename:HandsDetector.py
# Toolby: PyCharm

import cv2
import mediapipe as mp
import time

cap = cv2.VideoCapture(0)       #OpenCV摄像头调用：0=内置摄像头（笔记本）   1=USB摄像头-1  2=USB摄像头-2

#定义并引用mediapipe中的hands模块
mpHands = mp.solutions.hands
hands = mpHands.Hands()
mpDraw = mp.solutions.drawing_utils

#帧率时间计算
pTime = 0
cTime = 0

while True:
    success, img = cap.read()
    imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)       #cv2图像初始化
    results = hands.process(imgRGB)
    # print(results.multi_hand_landmarks)
    
    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)
            
            #绘制手部特征点：
            mpDraw.draw_landmarks(img, handLms, mpHands.HAND_CONNECTIONS)
    '''''
    视频FPS计算
       '''
    cTime = time.time()
    fps = 1 / (cTime - pTime)
    pTime = cTime

    cv2.putText(img, str(int(fps)), (10, 70), cv2.FONT_HERSHEY_PLAIN, 3,
                (255, 0, 255), 3)       #FPS的字号，颜色等设置

    cv2.imshow("HandsImage", img)       #CV2窗体
    cv2.waitKey(1)      #关闭窗体