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Input file is invalid

asked 2020-10-27 06:32:22 -0500

flaviu2 gravatar image

updated 2020-10-27 06:33:17 -0500

I am a newbie in Python. I have a OpenCV related issue. I have this simple code:

import sys
from matplotlib import pyplot
import cv2

im = cv2.imread("E:\\Face.jpg")

def plot_img(img):
    rgb = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)

if im.any():

if im.any():
    classifier = cv2.CascadeClassifier()

but on line classifier.load("E:\haarcascade_eye.xml") I got the following error:

Exception has occurred: error
OpenCV(4.4.0) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-d54til6p\opencv\modules\core\src\persistence.cpp:717: error: (-49:Unknown error code -49) Input file is invalid in function 'cv::FileStorage::Impl::open'
  File "D:\Tempx\PythonApplication1\", line 18, in <module>

I have downloaded haarcascade_eye.xmlfrom here:

What could be the problem ?

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answered 2020-10-27 07:22:24 -0500

berak gravatar image

updated 2020-10-27 07:24:54 -0500

try to open it with a text editor, it might be corrupted, maybe you got some html from github

here's the correct link

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Thank you a lot, that was the problem. I wonder from where can I take the right xml files because I took the wrong xml from the official OpenCV repository.

flaviu2 gravatar imageflaviu2 ( 2020-10-27 11:16:09 -0500 )edit

if you click any of the xml files in a webbrowser, use the raw button on that page

if you use curl or wget, replace blob with raw in the url

berak gravatar imageberak ( 2020-10-27 11:36:52 -0500 )edit

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Asked: 2020-10-27 06:32:22 -0500

Seen: 237 times

Last updated: Oct 27 '20