小编Obi*_*iii的帖子

我试图从opencv(Python)中的URL读取视频,然后逐帧处理它,然后将其发送到HTML页面.

但我只得到第一帧,之后该程序给出以下错误

这是我的主文件(main.py)

from flask import Flask, render_template, Response
from camera import VideoCamera
import pdb
app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')

def gen(camera):
    while True:
        frame = camera.get_frame()
        yield (b'--frame\r\n'
                b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n\r\n')

@app.route('/video_feed')
def video_feed():
    return Response(gen(VideoCamera()),
                    mimetype='multipart/x-mixed-replace; boundary=frame')

if __name__ == '__main__':
    app.run(host='127.0.0.1', debug=True)

这是camera.py文件:

    import cv2
    import urllib
    import pdb
    import numpy as np

    face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
    #https://github.com/Itseez/opencv/blob/master/data/haarcascades/haarcascade_eye.xml
    eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')

    class VideoCamera(object):
        def __init__(self):
            # Using OpenCV …