import requests
import cv2
import numpy as np

url = "http://192.168.1.48:5080/"

files = {
    "img": ("myname.png", open("123.png", "rb"), "image/png")
}

response = requests.request("POST", url, files=files)
img = cv2.imdecode(np.frombuffer(response.content, np.uint8), 1)
cv2.imshow("result", img)
cv2.waitKey(0)