是的，用的官方的

将openmv用作STA接入局域网中，向另一端口传输图片，以下是openmv端的代码：

import sensor, image, time, socket, network, io

wlan = network.WLAN(network.STA_IF)     #STA模式
wlan.active(True)

if not wlan.isconnected():              #网络连接
    print('connecting to network...')
    wlan.connect('5352123', 'fasdfagdad')

    while not wlan.isconnected():
        pass

print('网络配置:', wlan.ifconfig())


sensor.reset()                          #设定摄像头参数
sensor.set_pixformat(sensor.JPEG)
sensor.set_vflip(True)                  #垂直翻转
sensor.set_framesize(sensor.HVGA)
sensor.skip_frames(time = 2000)

clock = time.clock()

s = socket.socket(socket.AF_INET,socket.SOCK_DGRAM,0)   #UDP传输


while(True):
    clock.tick()
    img = sensor.snapshot()                 #拍摄图片
    #img = img.compressed(quality=35)
    s.sendto(img,("192.168.1.112",5454))    #接收端地址
    #print(img)
    print(clock.fps())

用python在目标地址电脑上产生一个接收端程序，代码如下：

import socket
import cv2
import io
import numpy as np
from PIL import Image
from PIL import ImageFile

ImageFile.LOAD_TRUNCATED_IMAGES = True

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 0)     #UDP传输
s.bind(("0.0.0.0", 5454))                                   #端口号

while True:
    data, IP = s.recvfrom(100000)       #接收数据
    bytes_stream = io.BytesIO(data)     #转化为二进制流
    image = Image.open(bytes_stream)    #打开图片
    img = np.asarray(image)
    img = cv2.cvtColor(img, cv2.COLOR_RGB2BGR)  # 传输的是RGB格式，要转换为BGR（opencv的格式）
    cv2.imshow("ESP32 Capture Image", img)
    if cv2.waitKey(1) == ord("q"):      #退出条件
        break

在运行后显示如下错误：
Traceback (most recent call last):
File "D:\python\wifi\main.py", line 15, in
image = Image.open(bytes_stream)
File "D:\Anaconda3\envs\gjp\lib\site-packages\PIL\Image.py", line 3298, in open
raise UnidentifiedImageError(msg)
PIL.UnidentifiedImageError: cannot identify image file <_io.BytesIO object at 0x00000206C87E03B0>

提示不能识别文件，这是什么原因导致的？