我在这里关注opencv教程:https://www.youtube.com/watch?v=PmZ29Vta7Vc
在11:36,当他运行他的代码时,它可以正常工作,但是当我运行我的代码时,我得到了一个错误:
Traceback (most recent call last):
File "C:/Users/Joshua/OneDrive/VscodePrograms/MyPythonFolder/facialRec/main.py", line 11, in <module>
faces = face_cascade.detectMultiScale(gray, scaleFactor=1.5, minNeighbors=5)
cv2.error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\objdetect\src\cascadedetect.cpp:1689: error: (-215:Assertion failed) !empty() in function 'cv::CascadeClassifier::detectMultiScale'
[ WARN:0] global C:\projects\opencv-python\opencv\modules\videoio\src\cap_msmf.cpp (674) SourceReaderCB::~SourceReaderCB terminating async callback
代码如下:
import numpy as np
import cv2
face_cascade = cv2.CascadeClassifier('casades/data/haardcascade_frontalface_alt2.xml')
cap = cv2.VideoCapture(0)
while (True):
ret, frame = cap.read()
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
faces = face_cascade.detectMultiScale(gray, scaleFactor=1.5, minNeighbors=5)
for (x, y, w, h) in faces:
print(x, y, w, h)
cv2.imshow('frame', frame)
if cv2.waitKey(20) & 0xFF == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
请帮助!
答案 0 :(得分:0)
问题出在CascadeClassifier的路径上:
face_cascade = cv2.CascadeClassifier('cascades/data/haarcascade_frontalface_alt2.xml')
我认为现在应该可以正常工作了。