python中的opencv模块读取笔记本摄像头并实时显示时间信息
利用python的opencv模块读取摄像头来获取图像,同时调用datetime模块来读取实时的时间并显示在屏幕上
代码如下
import cv2 import datetime #获取摄像头视频 cap = cv2.VideoCapture(0) # 获取视频宽度 frame_width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)) # 获取视频高度 frame_height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)) #文字坐标 word_x = int(frame_width / 10) word_y = int(frame_height / 10) while (cap.isOpened()): ret,frame = cap.read() time_text = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S') cv2.putText(frame, time_text, (word_x,word_y), cv2.FONT_HERSHEY_SIMPLEX,1,(55,255,155),2) cv2.imshow("real_time",frame) if cv2.waitKey(1) & 0xFF == ord('q'): break cap.release() cv2.destroyAllWindows()
运行结果如图所示