我正在尝试制作一个flask web服务器,用于流式传输通过dlib人脸识别运行的相机的视频,但它给了我一个名称错误,告诉我没有定义“face_utils”,如何修复此错误? 如果我运行dlib面部识别,它会工作,但在这里它会给出错误 如果我只是得到相机图像,它也可以工作,但它只是不想一起工作
#main.py
from flask import Flask, render_template, Response
from camera import VideoCamera
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='0.0.0.0', debug=True)
#camera.py
import cv2
import dlib
import imutils
class VideoCamera(object):
def __init__(self):
self.video = cv2.VideoCapture(0)
def __del__(self):
self.video.release()
def get_frame(self):
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor(r'shape_predictor_68_face_landmarks.dat')
success, image = self.video.read()
image = imutils.resize(image, width=150)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
rects = detector(gray, 1)
for (i, rect) in enumerate(rects):
shape = predictor(gray, rect)
shape = face_utils.shape_to_np(shape)
(x, y, w, h) = face_utils.rect_to_bb(rect)
cv2.rectangle(image, (x, y), (x + w, y + h), (0, 255, 0), 2)
cv2.putText(image, "Mate".format(i + 1), (x - 5, y - 5),
cv2.FONT_HERSHEY_DUPLEX, 0.5, (0, 255, 0), 1)
for (x, y) in shape:
cv2.circle(image, (x, y), 1, (0, 0, 255), -1)
for (x,y,w,h) in face_rects:
cv2.rectangle(image,(x,y),(x+w,y+h),(0,255,0),2)
break
ret, jpeg = cv2.imencode('.jpg', image)
return jpeg.tobytes()
#index.html
<html>
<head>
<title>Mod1</title>
<style>
img {
display: block;
margin-left: auto;
margin-right: auto;
width: 35%
}
</style>
</head>
<body>
<h1 align="center">Video Streaming Demonistration</h1>
<img id="bg" class="center" src="{{ url_for('video_feed') }}">
</body>
</html>
在camera.py文件中也添加这一行
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