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@@ -0,0 +1,40 @@
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+from flask import Flask, render_template, Response
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+import cv2
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+
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+
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+class VideoCamera(object):
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+ def __init__(self):
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+ # 通过opencv获取实时视频流
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+ self.video = cv2.VideoCapture(0)
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+
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+ def __del__(self):
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+ self.video.release()
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+
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+ def get_frame(self):
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+ success, image = self.video.read()
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+ # 在这里处理视频帧
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+ cv2.putText(image, "hello", (10, 30),
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+ cv2.FONT_HERSHEY_SIMPLEX, 0.8, (0, 255, 0))
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+ # 因为opencv读取的图片并非jpeg格式，因此要用motion JPEG模式需要先将图片转码成jpg格式图片
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+ ret, jpeg = cv2.imencode('.jpg', image)
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+ return jpeg.tobytes()
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+ app = Flask(__name__, static_folder='./static') @ app.route('/')
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+ # 主页
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+
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+ def index():
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+ # jinja2模板，具体格式保存在index.html文件中
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+ return render_template('index.html')
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+
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+ def gen(camera):
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+ while True:
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+ frame = camera.get_frame()
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+ # 使用generator函数输出视频流， 每次请求输出的content类型是image/jpeg
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+ yield (b'--frame\r\n' b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n\r\n') @ app.route('/video_feed')
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+ # 这个地址返回视频流响应
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+
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+ def video_feed():
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+ return Response(gen(VideoCamera()), mimetype='multipart/x-mixed-replace; boundary=frame')
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+
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+
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+if __name__ == '__main__':
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+ app.run(host='0.0.0.0', debug=True, port=5000)
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