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I'm trying to run the face detection code . But unable to fix the error . Help me to fix it . Thanks in advance

Find the code below

import numpy as np import cv2

face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml') eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')

img = cv2.imread('11.jpg') 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) roi_gray = gray[y:y+h, x:x+w] roi_color = img[y:y+h, x:x+w] eyes = eye_cascade.detectMultiScale(roi_gray) for(ex,ey,ew,eh) in eyes: cv2.Rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2)

cv2.imshow('img',img) cv2.waitKey(0) cv2.destroyAllWindows()

Error Message:

Traceback (most recent call last): File "C:\Users\vmadoori\Desktop\image processing\face_eye_detection.py", line 4, in <module> face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml') error: C:\build\master_winpack-bindings-win32-vc14-static\opencv\modules\core\src\persistence.cpp:4422: error: (-49) Input file is empty in function cvOpenFileStorage