AttributeError: module 'cv2.cv2' has no attribute 'CascadeClassifer' (OpenCV Face Detection)

Question

我已经尝试运行这段用于 OpenCV 人脸检测的代码，在运行之后我得到了错误（AttributeError：模块 'cv2.cv2' 没有属性 'CascadeClassifer'） 我需要使用某种新代码吗？

错误在第 4 行 (face_cascade = cv2.CascadeClassifer('haarcascade_frontalface_default.xml')

import cv2
import numpy as np

face_cascade = cv2.CascadeClassifer('haarcascade_frontalface_default.xml')

eye_cascade = cv2.CascadeClassifer('haarcascade_eye.xml')

cap = cv2.VideoCapture(0)

while True:
    ret, img = cap.read()
    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    face = face_cascade.detectMultiScale(gray, 1.3, 5)
    for (x,y,w,h) in faces:
        cv2.rectangle(img, (x,y), (x+w, y+h), (255,0,0), 2)
        roi_gray = gray[y:y+h. x:x+w]
        roi_color = img[y:y+h. x:x+w]
        eye = eye_cascade.detectMultiScale(roi_gray)
        for (ex,ey,ew,eh) in eyes:
            cv2.rectangle(roi_color, (ex, ey), (ex+ew,ey+eh), (0,255,0), 2)

        cv2.imshow('img',img)
        k = cv2.waitKey(30) & 0xff
        if k == 27:
            break

cap.release()
cv2.destoryAllWindows()

Answer 1

假设您要从文件加载分类器。使用正确的拼写

face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

没有

face_cascade = cv2.CascadeClassifer('haarcascade_frontalface_default.xml')

Answer 2

没关系，如果有人感兴趣，我已经修复了代码。

import numpy as np
import cv2

face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')

cap = cv2.VideoCapture(0)

while 1:
    ret, img = cap.read()
    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    faces = face_cascade.detectMultiScale(gray, 1.3, 5)

    for (x,y,w,h) in faces:
        cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
        roi_gray = gray[y:y+h, x:x+w]
        roi_color = img[y:y+h, x:x+w]

        eyes = eye_cascade.detectMultiScale(roi_gray)
        for (ex,ey,ew,eh) in eyes:
            cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2)

    cv2.imshow('img',img)
    k = cv2.waitKey(30) & 0xff
    if k == 27:
        break

cap.release()
cv2.destroyAllWindows()

Answer 3

同样的错误，我通过降级openCV版本解决了这个错误。使用 pip install opencv-python== 获取 openCV 版本列表。尝试低于 4
的 openCV 版本首先使用 pip uninstall opencv-python
卸载然后使用 pip install opencv-python==

安装

AttributeError: module 'cv2.cv2' has no attribute 'CascadeClassifer' (OpenCV Face Detection)

AttributeError: module 'cv2.cv2' has no attribute 'CascadeClassifer' (OpenCV Face Detection)

python

opencv

detection

face