AttributeError:“模块"对象没有属性"InitFont" [英] AttributeError: 'module' object has no attribute 'InitFont'

问题描述

在Python 2.7 OpenCV 3.2 Windows 10上运行 以下代码引发错误

Run on Python 2.7 OpenCV 3.2 Windows 10 The below code is throwing error

AttributeError:模块"对象没有属性"InitFont"

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

我的最佳猜测是由于OpenCV 3在以下版本中运行良好.

My best guess is due to OpenCV 3 as it was working fine in below version.

import cv2
import numpy as np

recognizer = cv2.face.createLBPHFaceRecognizer()
recognizer.load('trainner/trainner.yml')
cascadePath = "haarcascade_frontalface_default.xml"
faceCascade = cv2.CascadeClassifier(cascadePath);


cam = cv2.VideoCapture(0)
font = cv2.InitFont(cv2.CV_FONT_HERSHEY_SIMPLEX, 1, 1, 0, 1, 1)
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, conf = recognizer.predict(gray[y:y+h,x:x+w])
        if(conf<50):
            if(Id==1):
                Id="Prosper"

        else:
            Id="Unknown"
        cv2.cv.PutText(cv2.cv.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()

推荐答案

您不再需要初始化字体. cv模块已弃用，您需要的所有内容都应来自cv2.在cv2 api中，图像是数组，因此您无需转换fromarray.调用putText函数的语法也有所不同.

You no longer need to initialize the font; the cv module is deprecated, everything you need should come from cv2. In the cv2 api, images are arrays, so you don't need to convert fromarray. The syntax is a bit different for calling the putText function as well.

在此处查看putText的文档:这应该为您工作.确保删除程序开头的InitFont函数.

This should work for you. Be sure to delete the InitFont function in the beginning of your program.

fontface = cv2.FONT_HERSHEY_SIMPLEX
fontscale = 1
fontcolor = (255, 255, 255)
cv2.putText(im, str(Id), (x,y+h), fontface, fontscale, fontcolor) 

---

这是一个最小的工作示例，使用putText将文本添加到VideoCapture的帧中:

---

Here's a minimal working example adding text onto frames from VideoCapture using putText:

import cv2
import numpy as np

cam = cv2.VideoCapture(0)

fontFace = cv2.FONT_HERSHEY_SIMPLEX
fontScale = 1
fontColor = (255, 255, 255)

ret, im = cam.read()
locy = int(im.shape[0]/2) # the text location will be in the middle
locx = int(im.shape[1]/2) #           of the frame for this example

while True:
    ret, im = cam.read()
    cv2.putText(im, "Success!", (locx, locy), fontFace, fontScale, fontColor) 
    cv2.imshow('im', im)
    if cv2.waitKey(10) & 0xFF==ord('q'):
        break

cam.release()
cv2.destroyAllWindows()

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