python请求传输数据顺序改变了 python 传输

1.1：imageZMQ库实现,发送端

import socket

import time

import cv2

import imagezmq

import traceback

import simplejpeg

capture=cv2.VideoCapture(0) # 获取摄像头视频

capture=cv2.VideoCapture(r"D:\project\dataset\video\测试.mp4")

192.168.100.104 为发送端主机ip地址

sender = imagezmq.ImageSender(connect_to='tcp://192.168.100.104:5555', REQ_REP=False)

rpi_name = socket.gethostname() # 获取主机名

time.sleep(2.0)

jpeg_quality = 95   #调整图片压缩质量，95%

while(True):

try:

ref, frame=capture.read(0)

time.sleep(1/60)

image = cv2.resize(frame,(1280,720))

curtime = time.time()

msg = rpi_name+'*'+str(curtime)

# 通过simplejpeg函数将图片编码为jpeg格式，提高传输效率

jpg_buffer = simplejpeg.encode_jpeg(image, quality=jpeg_quality,

colorspace='BGR')

sender.send_jpg(msg, jpg_buffer)

cv2.imshow(rpi_name, image)

cv2.waitKey(1)

except:

print(traceback.print_exc())

break

1.2：imageZMQ库实现,接收端

import cv2

import imagezmq

import traceback

import time

import simplejpeg

接收发送端数据，输入发送端的ip地址

image_hub = imagezmq.ImageHub(open_port='tcp://192.168.100.104:5555',REQ_REP=False)

frame_count = 1

time1 = 0

while True:

try:

time1 = time.time() if frame_count == 1 else time1

name, image = image_hub.recv_jpg()

# 解码

image = simplejpeg.decode_jpeg(image, colorspace='BGR')

cv2.imshow(name.split('*')[0], image)

cv2.waitKey(1)

time2 = time.time()

print(image.shape[:2], int(frame_count/(time2-time1)))

frame_count += 1

except:

print(traceback.format_exc())

break2.1：使用TCP+opencv；就是把视频一秒钟拆成30张图片发过去，发送端

import socket

import cv2import sys

import numpy as np

address = ('192.168.100.104', 5005)  # 服务端地址和端口

ser = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

ser.bind(address)

ser.listen(5)

阻塞式

print('waiting。。。')

conn, addr = ser.accept()

print('建立连接...')

print('连接对象：', addr)

cap = cv2.VideoCapture(r"D:\project\dataset\video\测试.mp4")

cap = cv2.VideoCapture(0)

frames_num=cap.get(7)

print('视频总帧数：',frames_num)

print('发送目标...')

count = 0

while cap.isOpened():

try:

data = conn.recv(1024)

data = data.decode()

if not data:

break

ret, frame = cap.read()

frame = cv2.resize(frame,(1280,720))

cv2.imshow('send', frame)

cv2.waitKey(1)

count += 1

# 数据打包有很多方式，也可以用json打包

img_encode = cv2.imencode('.jpg', frame)[1]

data_encode = np.array(img_encode)
    str_encode = data_encode.tostring()

    conn.sendall(str_encode)
except KeyboardInterrupt:
    print('KeyboardInterrupt')
    sys.exit(0)

2.2：接收端

import socket

import sys

import cv2

import numpy as np

import time

address = ('192.168.100.104', 5005)  # 服务端地址和端口

cli = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:

cli.connect(address)  # 尝试连接服务端

except Exception:

print('[!] Server not found or not open')

sys.exit()frame_count = 1

while True:

time1 = time.time() if frame_count == 1 else time1

trigger = 'ok'

cli.sendall(trigger.encode())

data = cli.recv(1024102420)

image = np.frombuffer(data, np.uint8)

image = cv2.imdecode(image,cv2.IMREAD_COLOR)

cv2.imshow('video',image)

cv2.waitKey(1)

end_time = time.time()

time2 = time.time()

print(image.shape[:2], int(frame_count / (time2 - time1)))

frame_count += 1

cli.close()