FastAPI에서 NumPy 배열을 이미지로 렌더링하는 방법은 무엇입니까?

<code class="python">from PIL import Image
import numpy as np

def render_image(img):
    with io.BytesIO() as buf:
        img = Image.fromarray(img)
        img.save(buf, format="PNG")
        return buf.getvalue()</code>

<code class="python">import requests

url = "http://example.com/image"
response = requests.get(url)
image_bytes = response.content
# You can now render the image using PIL or OpenCV</code>

<code class="python">import cv2
import numpy as np

def render_image(img):
    ret, buf = cv2.imencode('.png', img)
    return buf.tobytes()</code>

<code class="python">import requests
import cv2
import numpy as np

url = "http://example.com/image"
response = requests.get(url)
image_bytes = response.content
# You can now render the image using PIL or OpenCV</code>