Opencv detectMultiScale error

Asked Jul 09 '18 at 12:21

Active Jul 09 '18 at 12:21

Viewed 362 times

I want to get frames from my camera and detect faces, I used this code:

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)

but the method detectMultiScale throws error as below:

OpenCV(3.4.1) Error: Assertion failed (!empty()) in cv::CascadeClassifier::detectMultiScale, file C:\projects\opencv-python\opencv\modules\objdetect\src\cascadedetect.cpp, line 1698
Traceback (most recent call last):
  File "C:/~blabla~/untitled2/aabaci.py", line 12, in <module>
    faces = face_cascade.detectMultiScale(gray,1.3,5)
cv2.error: OpenCV(3.4.1) C:\projects\opencv-python\opencv\modules\objdetect\src\cascadedetect.cpp:1698: error: (-215) !empty() in function cv::CascadeClassifier::detectMultiScale

Do you have any idea about this problem?

asked Jul 09 '18 at 12:21

user70

make sure the file `haarcascade_frontalface_default.xml` is in the same folder as the python `.py` file. – Jeru Luke Jul 09 '18 at 13:14
I forgot I used Anaconda, maybe the reason is this :/ – user70 Jul 09 '18 at 14:44
is it working now? – Jeru Luke Jul 09 '18 at 14:48
1

Yes working great, the problem was the path. Solved. – user70 Jul 09 '18 at 14:54

Opencv detectMultiScale error

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