396:错误:( - 5)此LBPH模型尚未计算.你打电话给火车方法了吗？在函数cv :: face :: LBPH :: predict中

Question

我正在尝试使用Python 2.7.13和OpenCV 3.3.0构建一个人脸识别程序.

但是,当我试图检测到我的脸时,我收到此错误:

File "C:\GitProject\face_recognition\detector.py", line 20, in
 <module> Id = recognizer.predict(gray[y:y+h,x:x+w])
error: C:\projects\opencv-python\opencv_contrib\modules\face\src\lbph_faces.cpp:396: 
error: (-5) This LBPH model is not computed yet. Did you call the train method? in function cv::face::LBPH::predict

这是我的代码:

import cv2 ,os
import numpy as np
from PIL import Image
import pickle

recognizer = cv2.face.LBPHFaceRecognizer_create()
recognizer.read('trainer/training_data.yml')
cascadePath = "haarcascade_frontalface_default.xml"
faceCascade = cv2.CascadeClassifier(cascadePath);


cam = cv2.VideoCapture(0)
font = cv2.FONT_HERSHEY_SIMPLEX
while True:
    ret, im =cam.read()
    gray=cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
    faces=faceCascade.detectMultiScale(gray, 1.2,5)
    for(x,y,w,h) in faces:
        cv2.rectangle(im,(x,y),(x+w,y+h),(225,0,0),2)
        Id = recognizer.predict(gray[y:y+h,x:x+w])
        if(conf<50):
            if(Id==1):
                Id="Anirban"
            elif(Id==2):
                Id="Sam"
        else:
            Id="Unknown"
        cv2.PutText(cv2.fromarray(im),str(Id), (x,y+h),font, 255)
    cv2.imshow('im',im) 
    if cv2.waitKey(10) & 0xFF==ord('q'):
        break

cam.release()
cv2.destroyAllWindows()

Answer 1

打开培训师,将Recognizer.save更改为recognizer.write.不要忘记再次运行训练师.这个对我有用.