OpenCV Error

[Mohamedsabry109]

OpenCV Error: Assertion failed (scn == 3 || scn == 4) in ipp_cvtColor, file /home/travis/miniconda/conda-bld/conda_1486587069159/work/opencv-3.1.0/modules/imgproc/src/color.cpp, line 7456 Traceback (most recent call last): File "face.py", line 6, in gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) cv2.error: /home/travis/miniconda/conda-bld/conda_1486587069159/work/opencv-3.1.0/modules/imgproc/src/color.cpp:7456: error: (-215) scn == 3 || scn == 4 in function ipp_cvtColor i recieve this error whenever i run a code containing haarcascade

[ShivaGuntuku]

i have same issue too..???

[bryanbocao]

Same here

[shuhamgothale19]

I also have same issue

[Nevin06]

@BryanBo-Cao @shuhamgothale19 @ShivaGuntuku @Mohamed Sabry

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
opencv haar cascade classifiers can be downloaded from 
https://github.com/opencv/opencv/tree/master/data/haarcascades
Save your python file in the same folder as your  haar cascade xml files.
"""

import cv2

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

cap = cv2.VideoCapture(0)

while True:
    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)
        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)
    k = cv2.waitKey(30) & 0xff
    if k == 27 :
        break

cap.release()
cv2.destroyAllWindows()