TypeError: an integer is required (got type tuple)

问题:

I am trying to set up my detector for a face recognition project or a program, but I keep getting this error:

TypeError: an integer is required (got type tuple)

Also I tried with changing:

cv2.putText(img, str(id), (x, y + h), font, 255)

to

cv2.putText(img, name, (x, y + h), font, 2, (0, 255, 0), 2)

Here's my code:

import cv2
import numpy as np

faceDetect=cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
cam=cv2.VideoCapture(0)

rec = cv2.face.LBPHFaceRecognizer_create()
rec.read("trainer/training_data.yml")
id=0
font=(cv2.FONT_HERSHEY_SIMPLEX,1,1,0,1)

while(True):
    ret,img=cam.read()
    gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
    faces=faceDetect.detectMultiScale(gray,1.3,5)
    for(x,y,w,h) in faces:
        cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),2)
        id,conf=rec.predict(gray[y:y+h,x:x+w])
        cv2.putText(img,str(id),(x,y+h),font,255)
    cv2.imshow("FACEDETECTIONPT1",img)
    if(cv2.waitKey(1)==ord('q')):
        break
cam.release()
cv2.destroyAllWindows

回答1:

In my experience the error statement was misleading. In my case, the coordinates (x, y) were in float instead of int and fixing that fixed this issue.

回答2:

removed the parameters from the font and edited my putText to cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),2) and this seems to have worked for me..

回答3:

Looking at the putText documentation, I see that your font is a tuple, and you're trying to fill in multiple parameters for putText: fontFace, fontScale, color, thickness, and lineType.

Perhaps you can unpack that parameter to get what you need (with the * operator):

cv2.putText(img, name, (x, y + h), *font, 2, (0, 255, 0), 2)