使用 Python+Opencv 从摄像头逐帧读取图片保存在本地

今天测试的时候，遇到了一个问题，测试需求是，需要把摄像头拍摄的实时视频逐帧率保存下来。

self.cap = cv2.VideoCapture(0)；0是本地摄像头

# -*- coding: cp936 -*-"""Author:xxxxxxDate:2019-09-23Discription:Read Camaro picture and save """
import cv2,os,timeimport numpy as npfrom multiprocessing import Processimport thread
class CamaroCap(object):
    #打开摄像头    def __init__(self):        #self.cap = cv2.VideoCapture(0)        self.cap = cv2.VideoCapture("rtsp://admin:admin123@172.16.9.23/cam/realmonitor?channel=1&subtype=0")#获取网络摄像机        """        self.cap.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter_fourcc('M', 'J', 'P', 'G'))        self.cap.set(cv2.CAP_PROP_FRAME_WIDTH, 640)        self.cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480);        """
    #图片信息打印           def get_image_info(self,image):        print(type(image))        print(image.shape)        print(image.size)        print(image.dtype)        pixel_data = np.array(image)        print(pixel_data)
    #逐帧读取数据并保存图片到本地制定位置    def Camaro_image(self):        i = 0        while(1):            """            ret：True或者False，代表有没有读取到图片            frame：表示截取到一帧的图片            """            ret,frame = self.cap.read()            ret,frame = self.cap.read()            #print("打印图片信息")            #self.get_image_info(frame)                        # 展示图片            cv2.imshow('capture',frame)            #保存图片            cv2.imwrite(r"D:\image\\"+ str(i) + ".jpg",frame)            i = i + 1            if cv2.waitKey(1) & 0xFF == ord('q'):                break
if __name__ == '__main__':    outmasages = CamaroCap()    #调用摄像头    outmasages.Camaro_image()    #释放对象和销毁窗口    outmasages.cap.release()    cv2.destroyAllWindows()