窗口没有弹出cv2和咖啡

Question

我试图加载一个YouTube视频，在脸上放一个盒子，并预测他们的年龄和性别。但是，当我运行代码时，它只是执行，但弹出窗口没有出现。我的代码在下面。我不确定问题出在哪里。感谢您的帮助，伙计们

import pafy

import cv2

url = 'https://www.youtube.com/watch?v=dTL7LriRZJQ'    #URL that you want to copy

vPafy= pafy.new(url) #get URL and get best mp4 video 

play = vPafy.getbest(preftype="mp4")

#Video capture

cap = cv2.VideoCapture(play.url) 

MODEL_MEAN_VALUES = (78.4, 87.7, 114.9)

age_list = ['(0, 2)', '(4, 6)', '(8, 12)', '(15, 20)', '(25, 32)', '(38, 43)', '(48, 53)', '(60, 100)']

gender_list = ['Male', 'Female']

# defining a function to load prototxt & caffe 

def init_caffe_models():

    age_net = cv2.dnn.readNetFromCaffe('/Users/Desktop/Gender-and-Age-Detection-master/age_deploy.prototxt', '/Users/Desktop/Gender-and-Age-Detection-master/age_net.caffemodel')

    gender_net = cv2.dnn.readNetFromCaffe('/Users/Desktop/Gender-and-Age-Detection-master/gender_deploy.prototxt','/Users/Desktop/Gender-and-Age-Detection-master/gender_net.caffemodel')

    return(age_net, gender_net)

# defining a function for capturing the video

def video_detector(age_net, gender_net):

    font = cv2.FONT_HERSHEY_SIMPLE

    while True:

        ret, frame = cap.read()     #returns a boolean    

        gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

        face_cascade = cv2.CascadeClassifier('/Users/Desktop/OpenCV-Python-Series-master/src/cascades/data/haarcascade_frontalface_default.xml')

        faces = face_cascade.detectMultiScale(gray, 1.1, 5) # input = grey image, 1.1 = scale factor

Answer 1

您已经创建了两个函数video_detector（）和init_caffe_models（），它们从未被调用过。您的代码只是到达gender_list = [“男性”，“女性”]，然后退出而没有进入这两个函数。