Question

我是Python的新手。我正在尝试从我的Raspberry Pi相机捕获视频流，对其进行一些处理，然后将生成的图像流式传输到另一台计算机。我需要帮助将后处理后的图像转换回可以通过套接字连接发送的流。这是我的代码：

import io
import socket
import struct
import time
import picamera
import cv2
import numpy as np

client_socket = socket.socket()
client_socket.connect(('192.168.0.131', 8000))
connection = client_socket.makefile('wb')
try:
    with picamera.PiCamera() as camera:
        camera.resolution = (640, 480)
        camera.framerate = 30
        time.sleep(2)
        start = time.time()
        stream = io.BytesIO()
        print(type(stream))
        # Use the video-port for captures...
        for foo in camera.capture_continuous(stream, 'jpeg', use_video_port=True):
            data = np.fromstring(stream.getvalue(), dtype=np.uint8)
            image=cv2.imdecode(data,1)
            height,width,channels=image.shape
            midheight=int(height/2)
            midwidth=int(width/2)
            cv2.line(image,(0,midheight),(width,midheight),(0,255,0),2)
            cv2.line(image,(midwidth,0),(midwidth,height),(0,255,0),2)
            stream=io.BytesIO(image)
            #print(type(stream))
            connection.write(struct.pack('<L', stream.tell()))
            connection.flush()
            stream.seek(0)
            connection.write(stream.read())
            if time.time() - start > 30:
                break
            stream.seek(0)
            stream.truncate()
    connection.write(struct.pack('<L', 0))
finally:
    connection.close()
    client_socket.close()

代码不断断开与客户端的连接。如果我不尝试将处理后的图像写入流，则连接稳定，代码按预期工作。任何帮助都会很棒。

将图像转换为bytesIO流

0 个答案: