程序代码整理

1.摄像头图读取数据

2.设置默认参数调用

3.python3多进程实现

1.摄像头图读取数据

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import v4l2capture
import select
from ctypes import *
import struct, array
from fcntl import ioctl
import cv2
import numpy as np
import time
from sys import argv
import multiprocessing
import time
import getopt

path = os.path.split(os.path.realpath(__file__))[0]+"/.."

save_name="img"

def save_image_process(Camera):
    video = v4l2capture.Video_device(Camera)
    video.set_format(424,240, fourcc='MJPG')
    video.create_buffers(1)
    video.queue_all_buffers()
    video.start() 
    imgInd = 0
    while  1:
        select.select((video,), (), ())        
        image_data = video.read_and_queue()
        frame = cv2.imdecode(np.frombuffer(image_data, dtype=np.uint8), cv2.IMREAD_COLOR)
        
        cv2.imshow('video',frame)
        cv2.imwrite(path+"/data/"+save_name+"/{}.jpg".format(imgInd), frame)
        #a.value = imgInd
        print("imgInd=",imgInd)
        imgInd+=1
        time.sleep(0.05)
        key = cv2.waitKey(1)
        if key & 0xFF == ord('q'):
            break 
 


if __name__ == '__main__':
    save_image_process("/dev/video0")

2.设置默认参数调用 

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import v4l2capture
import select
from ctypes import *
import struct, array
from fcntl import ioctl
import cv2
import numpy as np
import time
from sys import argv
import multiprocessing
import time
import getopt

camera.value = "/dev/video0"
output_data.value = "data"
Speed[0]  = 1560
Speed[1]  = 1500
serial.value = "/dev/ttyUSB0"
save_name="img"

for opt_name,opt_value in opts:
    if opt_name in ('-h','-H'):
        print("python3 Data_Coll.py --vels=1560 --output=data --serial=/dev/ttyUSB0 --camera=/dev/video0  --save_name=img ")
        exit()

    if opt_name in ('--vels'):
        Speed[0]  = int(opt_value)

    if opt_name in ('--output'):
        output_data.value = opt_value

    if opt_name in ('--serial'):
        serial.value = opt_value

    if opt_name in ('--camera'):
        camera.value = opt_value
        print("camera.value=",camera.value)
        
    if opt_name in ('--save_name'):
        save_name = opt_value
        print("save_name=",save_name)

 

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