Question

我有一个网络摄像头，我可以从中捕获视频：

import cv2
cap = cv2.VideoCapture(0)
while True:
    ret, frame = cap.read()

    cv2.imshow('frame', frame)
    if cv2.waitKey(1) and 0xFF == ord('q'):
        break
cap.release()
cv2.destroyAllWindows()

我想要做的是将frame发送到Web API（HTTP），接收响应图像并显示该图像。我是openCV的新手。你能告诉我我该怎么办？

Answer 1

试试这个（取自真实的项目）。显然会跳过某些部分（身份验证，响应验证）。希望它会给你一个很好的把握。

import cv2
from PIL import Image
from six import StringIO
import requests


cap = cv2.VideoCapture(0)
while True:
    ret, frame = cap.read()

    cv2.imshow('frame', frame)
    if cv2.waitKey(1) and 0xFF == ord('q'):

        frame_im = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
        pil_im = Image.fromarray(frame_im)
        stream = StringIO()
        pil_im.save(stream, format="JPEG")
        stream.seek(0)
        img_for_post = stream.read()    
        files = {'image': img_for_post}
        response = requests.post(
            url='/api/path-to-your-endpoint/',
            files=files
        )

        break

cap.release()
cv2.destroyAllWindows()

如何将图像从openCV发送到Web API

1 个答案: