本文实例为大家分享了python OpenCV来表示USB摄像头画面的具体代码,供大家参考,具体内容如下
确认Python版本
$ python Python 2.7.13 (default, Jan 19 2019, 14:48:08) [GCC 6.3.0 20170124] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> quit()
确认OS版本
$ uname -a Linux raspberrypi 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST 2015 armv7l GNU/Linux $ lsb_release -a No LSB modules are available. Distributor ID: Raspbian Description: Raspbian GNU/Linux 9.1 (stretch) Release: 9.1
安装OpenCV和Python版的OpenCV安装包
$ sudo apt-get install libopencv-dev $ sudo apt-get install python-opencv
Python的例程
import cv2 #初期化USB摄像头 cap = cv2.VideoCapture(0) while( cap.isOpened() ): #USB摄像头工作时,读取一帧图像 ret, frame = cap.read() #显示图像窗口在树莓派的屏幕上 cv2.imshow('Capture',frame) #按下q键退出 key = cv2.waitKey(1) #print( '%08X' % (key&0xFFFFFFFF) ) if key & 0x00FF == ord('q'): break # 释放资源和关闭窗口 cap.release() cv2.destroyAllWindows()
图像输出的树莓派截屏
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。