Python分类器

Question

我试图结合两个脚本，以获得面部识别工作的实时视频饲料从我的笔记本网络摄像头。我有一个工作的opencv2脚本，与我的摄像头工作，以查看现场镜头，另一个是一个面部识别脚本与哈尔分类器上的jpeg静止图像。我正在使用Python3.6IDE，打开cv2。下面的脚本用于通过我的膝上型电脑网络摄像机观看实时提要。

import numpy as np
import cv2, time

video = cv2.VideoCapture(0)  
a = 0

while True:

    a = a + 1    
    check, frame = video.read()

    print(check)
    print(frame)

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    cv2.imshow("Capturing", gray)
    cv2.waitKey(1)

    key = cv2.waitKey(1)    
    if key == ord('q'):
        break

print(a)

video.release()

我得到了这样一个脚本，它在脸周围画一个盒子，为带有静态.jpeg图像函数的haar分类器工作。我如何将这两个脚本与使用haar分类器在实时视频提要上进行面部识别结合起来呢？haar分类器XML和jpeg是我本地PC目录上的文件。

import cv2
import matplotlib.pyplot as plt
import time 



def detect_faces(f_cascade, colored_img, scaleFactor = 1.1):
    img_copy = colored_img.copy()          
    gray = cv2.cvtColor(img_copy, cv2.COLOR_BGR2GRAY)           
    faces = f_cascade.detectMultiScale(gray, scaleFactor=scaleFactor, minNeighbors=5);           
    for (x, y, w, h) in faces:
        cv2.rectangle(img_copy, (x, y), (x+w, y+h), (0, 255, 0), 2)               
    return img_copy



test2 = cv2.imread('C:/Python/opencv/sAndb.jpg')
haar_face_cascade = cv2.CascadeClassifier('C:/Python/opencv/opencv-master/opencv-master/data/haarcascades/haarcascade_frontalface_alt.xml')
faces_detected_img = detect_faces(haar_face_cascade, test2)
cv2.imshow('Faces', faces_detected_img)

Answer 1

试试这个：

import numpy as np
import cv2, time
import matplotlib.pyplot as plt

haar_face_cascade = cv2.CascadeClassifier('C:/Python/opencv/opencv-master/opencv-master/data/haarcascades/haarcascade_frontalface_alt.xml')
video = cv2.VideoCapture(0)  
a = 0

while True:

    a = a + 1    
    check, frame = video.read()

    print(check)
    print(frame)

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    faces = f_cascade.detectMultiScale(gray, scaleFactor=scaleFactor, minNeighbors=5);
    for (x, y, w, h) in faces:
        cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 0, 255), 2)


    cv2.imshow("Face Detector", frame)
    cv2.waitKey(1)

    key = cv2.waitKey(1)    
    if key == ord('q'):
        break

print(a)

video.release()