ps:为之后的opencv项目做准备
import cv2
import mediapipe as mp
import time
cap = cv2.VideoCapture(0) # 调用摄像头
mpHands = mp.solutions.hands # 调用手部模型
hands = mpHands.Hands() # 使用默认的函式
# 设置样式
mpDraw = mp.solutions.drawing_utils
# 点的样式 red 粗度 5px
handLmsStyle = mpDraw.DrawingSpec(color=(0, 0, 255), thickness=5)
# 线的样式 green cudu 5px
handConStyle = mpDraw.DrawingSpec(color=(0, 255, 0), thickness=5)
pTime = 0
cTime = 0
while True:
ret, img = cap.read() # 查看摄像头读取的图像
if ret:
imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB) # 将图片转为灰度图
result = hands.process(imgRGB) # 图片预测出来的一个结果
#print(result.multi_hand_landmarks)
imgHeight = img.shape[0]
imgWidth = img.shape[1]
if result.multi_hand_landmarks: # 如果检测到手
for handLms in result.multi_hand_landmarks: # 将手的图片在整个检测到的手的位置列表中一一遍历
# 参数:图片 点 线 点的样式 线的样式
mpDraw.draw_landmarks(img, handLms, mpHands.HAND_CONNECTIONS, handLmsStyle, handConStyle)
cTime = time.time()
fps = 1/(cTime-pTime) # 1秒/一张图片的显示时间=1秒显示多少帧
pTime = cTime
# 将fps输出到图片上
cv2.putText(img, f"FPS :{int(fps)}", (30, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (255, 0, 0), 3)
# 显示图片
cv2.imshow('img', img)
# 当输入英文字符q退出循环
if cv2.waitKey(1) == ord('q'):
break