识别手势语言

1，尝试打开前置摄像头

import cv2
#打开摄像头
cap=cv2.VideoCapture(0)
while True:
    #获取视频图像
    ok,img=cap.read()
    if ok:
        cv2.imshow("",img)
    cv2.waitKey(1)
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结果：可以打开电脑或者手机前置摄像头
2，识别手关节，并让关节连线

import cv2
import mediapipe as mp
mhands=mp.solutions.hands
hands=mhands.Hands()
mdraw = mp.solutions.drawing_utils
#手势对象
cap=cv2.VideoCapture(0)
while True:
    ok,img=cap.read()
    if ok:
        #彩色图片转为黑白
        img2=cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
        #计算手关节的坐标
        rs=hands.process(img2)
        if rs.multi_hand_landmarks:
            #遍历关节坐标
            for lms in rs.multi_hand_landmarks:
                for lm in lms.landmark:
                    h,w,d=img.shape
                    cx=int(lm.x*w)
                    cy=int(lm.y*h)
                    cv2.circle(img,(cx,cy),int(w/50),(0,0,200))
                    mdraw.draw_landmarks(img,lms,mhands.HAND_CONNECTIONS)
        cv2.imshow("",img)
    cv2.waitKey(1)
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