虚拟环境上的Opencv3和Python 2.7-AttributeError：“模块”对象没有属性“ createLBPHFaceRecognizer”

Question

我在opencv
3中有一个python函数。它在没有虚拟环境的情况下也可以工作。另外，我在venv上从以下地址安装了opencv：pyimagesearch。我试图在venv上运行该python函数，然后给出一个错误：

AttributeError: 'module' object has no attribute 'createLBPHFaceRecognizer'

在终端中没有venv：

gkhan@Gkan ~/Masaüstü/face_recognizer $ python face_recognizer.py
Yol :./sinif/114.jpg.
114 Yuz Tanindi 12

在终端中使用venv：

gkhan@Gkan ~/Masaüstü/face_recognizer $ workon cv
(cv)gkhan@Gkan ~/Masaüstü/face_recognizer $ python face_recognizer.py
Traceback (most recent call last):
  File "face_recognizer.py", line 15, in <module>
    recognizer = cv2.createLBPHFaceRecognizer()
AttributeError: 'module' object has no attribute 'createLBPHFaceRecognizer'

我的python代码：

#!/usr/bin/python
# -*- coding: utf-8 -*-

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

# For Test
if 0==0:

    cascadePath = "haarcascade_frontalface_default.xml"
    faceCascade = cv2.CascadeClassifier(cascadePath)

    recognizer = cv2.createLBPHFaceRecognizer()
...

我在Linux Mint 64位上使用python 2.7运行Opencv3

Answer 1

从OpenCV
3，您必须获取并构建opencv_contrib存储库。然后，您可以使用子模块“
face”。

有关cv2中的模块cv2.face的帮助：

NAME
    cv2.face

FILE
    (built-in)

FUNCTIONS
    createEigenFaceRecognizer(...)
        createEigenFaceRecognizer([, num_components[, threshold]]) -> retval

    createFisherFaceRecognizer(...)
        createFisherFaceRecognizer([, num_components[, threshold]]) -> retval

    createLBPHFaceRecognizer(...)
        createLBPHFaceRecognizer([, radius[, neighbors[, grid_x[, grid_y[, threshold]]]]]) -> retval

瞧〜现在可以使用了 cv2.face.createLBPHFaceRecognizer()