将位于同一文件夹中的多个视频中的图片保存在一个文件夹中

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

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

# 视频所在文件夹的路径位置
videos_path = 'F:/self/0'

# 从视频文件夹中获取各个视频的名字
videos_name = os.listdir(videos_path)

# 视频帧图片的起始编号
a = 0

# 遍历所有的视频
for i in videos_name:
    # 获取每个视频的路径
    video_path = os.path.join(videos_path, i)
    # 如果遇见文件夹就跳过
    if os.path.isdir(video_path):
        continue
    
    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))
    
    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-0.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()