将视频中所有图片保存到一个文件夹中

# -*- coding: utf-8 -*-
"""
Created on Tue Sep 11 16:35:29 2018

@author: 车路历程
"""
import cv2
from skimage import io

camera = cv2.VideoCapture("E:/video/7.mp4") # 参数0表示第一个摄像头

# 判断视频是否打开
if (camera.isOpened()):
    print('Open')
else:
    print('摄像头未打开')

# 测试用,查看视频size
size = (int(camera.get(cv2.CAP_PROP_FRAME_WIDTH)),
        int(camera.get(cv2.CAP_PROP_FRAME_HEIGHT)))
print('size:'+repr(size))

# 视频帧图片的起始编号
a = 0

while True:
    # 读取视频流
    grabbed, frame_lwpCV = camera.read()
    # 当从视频中读取不到视频帧就退出
    if frame_lwpCV is None:
        break
    
    # 将彩色图片转化为灰度图
    gray_lwpCV = cv2.cvtColor(frame_lwpCV, cv2.COLOR_BGR2GRAY)
    
    # 进行滤波处理
    gray_lwpCV = cv2.GaussianBlur(gray_lwpCV, (21, 21), 0)
    
    # 保存图片
    io.imsave("E:/all_picture/final_picture/%s.jpg"%a, frame_lwpCV)
    a += 1
    
    # 显示图片
    cv2.imshow('contours', frame_lwpCV)
 
    key = cv2.waitKey(1) & 0xFF
    # 按'q'健退出循环
    if key == ord('q'):
        break
    
# When everything done, release the capture
camera.release()
cv2.destroyAllWindows()