python cv2.face缺少参数

Question

下面附上的代码

import cv2
import numpy as np

recognizer = cv2.face
recognizer.loadTrainingData('trainer/example.yml')
#recognizer.read()
cascadePath = "haarcascade_frontalface_default.xml"
faceCascade = cv2.CascadeClassifier(cascadePath);


cam = cv2.VideoCapture(1)
font = cv2.FONT_HERSHEY_SIMPLEX
while True:
    ret, im =cam.read()
    gray=cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
    faces=faceCascade.detectMultiScale(gray, 1.3,5)
    for(x,y,w,h) in faces:
        cv2.rectangle(im,(x,y),(x+w,y+h),(225,0,0),2)
        Id, conf = recognizer.predict(gray[y:y+h,x:x+w])
        cv2.PutText(cv2.cv.fromarray(im),str(Id), (x,y+h),font, 255)
    cv2.imshow('face',im) 
    if cv2.waitKey(10) == ord('q'):
        break
cam.release()
cv2.destroyAllWindows()

我发现在这个 opencv 版本中不可能写出像下面这样的代码

recognizer = cv2.createLBPHFaceRecognizer() 
recognizer.load('trainer/example.yml')

目标是将之前收集的数据加载到example.yml中。但是我不确定该怎么做，并且附加的代码几乎没有不完整的参数。

Answer 1

创建识别器对象：

recognizer = cv2.face.LBPHFaceRecognizer_create()

要加载数据：

recognizer.read(filename)