Error whe try to run "detect_emotions" method

[lpostingher]

When I try to run this code, I have an exception

from fer import FER
import cv2 as cv

img = cv.imread(temp_file_name)
detector = FER()
detector.detect_emotions(img=img)

Traceback (most recent call last):
  File "c:/Dev/Python/vocacional-server/photo/emotion.py", line 17, in <module>
    detector.detect_emotions(img=img)
  File "C:\Users\lucas.postingher\AppData\Local\Programs\Python\Python36\lib\site-packages\fer\fer.py", line 236, in detect_emotions
    face_rectangles = self.find_faces(img, bgr=True)
  File "C:\Users\lucas.postingher\AppData\Local\Programs\Python\Python36\lib\site-packages\fer\fer.py", line 180, in find_faces
    if isinstance(self.__face_detector, cv2.CascadeClassifier):
TypeError: isinstance() arg 2 must be a type or tuple of types

[lpostingher]

I'm running on Windows 10.
Python 3.6.1.

[JustinShenk]

Hi Lucas, can you run python and see if your cv2 has a CascadeClassifier method? import cv2; print(cv2.CascadeClassifier)

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On Fri, Sep 4, 2020 at 2:46 AM Lucas da Silva Postingher < ***@***.***> wrote: When I try to run this code, I have an exception from fer import FER import cv2 as cv img = cv.imread(temp_file_name) detector = FER() detector.detect_emotions(img=img) Traceback (most recent call last): File "c:/Dev/Python/vocacional-server/photo/emotion.py", line 17, in <module> detector.detect_emotions(img=img) File "C:\Users\lucas.postingher\AppData\Local\Programs\Python\Python36\lib\site-packages\fer\fer.py", line 236, in detect_emotions face_rectangles = self.find_faces(img, bgr=True) File "C:\Users\lucas.postingher\AppData\Local\Programs\Python\Python36\lib\site-packages\fer\fer.py", line 180, in find_faces if isinstance(self.__face_detector, cv2.CascadeClassifier): TypeError: isinstance() arg 2 must be a type or tuple of types — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#13>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACOLMZHX5QVPE7VWY45XT7LSEA2FVANCNFSM4QWTPCDQ> .

[lpostingher]

Hi Justin, this is the output on my windows machine.

>>> import cv2
>>> print(cv2.CascadeClassifier)
<built-in function CascadeClassifier>

Today I tried to run the same script on my linux machine, and it works fine.

[JustinShenk]

Interesting, it appears related to the Windows OpenCV build. Can you please share the output of: hasattr(cv2.CascadeClassifier, "detectMultiScale")

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On Wed, Sep 9, 2020 at 12:13 AM Lucas da Silva Postingher < ***@***.***> wrote: Hi Justin, this is the output on my windows machine. >>> import cv2 >>> print(cv2.CascadeClassifier) <built-in function CascadeClassifier> Today I tried to run the same script on my linux macinhe, and it works fine. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#13 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACOLMZHY4VBEHDEUKBUUZ3LSE2T7XANCNFSM4QWTPCDQ> .

[lpostingher]

Sure.

>>> import cv2
>>> hasattr(cv2.CascadeClassifier, "detectMultiScale")
False

[JustinShenk]

It's not clear to me what is different about your OpenCV library but I expected CascadeClassifier would be a class, not a function. A few more things to debug: print(cv2.__version__) and print(dir(cv2)) Are you able to follow these instructions for Face recognition: https://www.datacamp.com/community/tutorials/face-detection-python-opencv? Otherwise, we may have to find the appropriate pip file to install on your system.

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On Wed, Sep 9, 2020 at 11:02 PM Lucas da Silva Postingher < ***@***.***> wrote: Sure. >>> import cv2 >>> hasattr(cv2.CascadeClassifier, "detectMultiScale") False — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#13 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACOLMZBW5LJM4FINUDWZ7B3SE7UNDANCNFSM4QWTPCDQ> .