error python
import numpy as np
import cv2
from matplotlib import pyplot as plt
face_cascade = cv2.CascadeClassifier(r'D:\OpenCV\opencv\sources\data\haarcascades\haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier(r'D:\OpenCV\opencv\sources\data\haarcascades\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:
img = 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()
I'm trying to use facedectecting.but I don't know why i cant open my camera. other code can open my camera. this is error information
File "face.py", line 12, in <module>
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
cv2.error: C:\projects\opencv-python\opencv\modules\imgproc\src\color.cpp:7456: error: (-215) scn == 3 || scn == 4 in function cv::ipp_cvtColor
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Can you slowly take out all the lines of code that are different from a standard example; until it is something like this and working http://docs.opencv.org/3.0-beta/doc/p.... Then we can see which part it does not like.
Thanks, I have find the problem.