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@kittinan
Last active November 15, 2024 15:35
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Python OpenCV webcam send image frame over socket
import cv2
import io
import socket
import struct
import time
import pickle
import zlib
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect(('192.168.1.124', 8485))
connection = client_socket.makefile('wb')
cam = cv2.VideoCapture(0)
cam.set(3, 320);
cam.set(4, 240);
img_counter = 0
encode_param = [int(cv2.IMWRITE_JPEG_QUALITY), 90]
while True:
ret, frame = cam.read()
result, frame = cv2.imencode('.jpg', frame, encode_param)
# data = zlib.compress(pickle.dumps(frame, 0))
data = pickle.dumps(frame, 0)
size = len(data)
print("{}: {}".format(img_counter, size))
client_socket.sendall(struct.pack(">L", size) + data)
img_counter += 1
cam.release()
import socket
import sys
import cv2
import pickle
import numpy as np
import struct ## new
import zlib
HOST=''
PORT=8485
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
print('Socket created')
s.bind((HOST,PORT))
print('Socket bind complete')
s.listen(10)
print('Socket now listening')
conn,addr=s.accept()
data = b""
payload_size = struct.calcsize(">L")
print("payload_size: {}".format(payload_size))
while True:
while len(data) < payload_size:
print("Recv: {}".format(len(data)))
data += conn.recv(4096)
print("Done Recv: {}".format(len(data)))
packed_msg_size = data[:payload_size]
data = data[payload_size:]
msg_size = struct.unpack(">L", packed_msg_size)[0]
print("msg_size: {}".format(msg_size))
while len(data) < msg_size:
data += conn.recv(4096)
frame_data = data[:msg_size]
data = data[msg_size:]
frame=pickle.loads(frame_data, fix_imports=True, encoding="bytes")
frame = cv2.imdecode(frame, cv2.IMREAD_COLOR)
cv2.imshow('ImageWindow',frame)
cv2.waitKey(1)
@fischer7
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This is working, while chat gpt didn't the job.
So, good job ;)

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