CODEWITHSUNDEEP
pythonopencv
jakson
jakson

Reputation: 255

opencv with python filtering a color give error

what i am trying to do in my code below is to create an opencv program with python to open my laptop webcam and the filter the camera so that it will only show my clothes. but i coudnt even run the program because i have encounter an error that seem to be coming from the 10th line of the code. it is definitely not a misspeal error, i double checked it.

the code sample 

#color filtering
import cv2
import numpy as np

#use camera
cap = cv2.VideoCapture(1)

while True:
    _, frame = cap.read()
   `this line seem to be the source-->` hsv=cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)


    # hsv hue sat value
    # try to get the value of the color that you want
    lower_red = np.array([150,150,150])
    upper_red = np.array([180,255,255])

    mask = cv2.inRange(hsv, lower_red, upper_red)
    res = cv2.bitwise_and(frame,frame, mask = mask)

    cv2.imshow('frame',frame)
    cv2.imshow('mask',mask)
    cv2.imshow('result',res)

    k = cv2.waitKey(5) & 0xFF
    if k == 27:
        break

cv2.destroyAllWindows()

#release camera
cap.release()

the error 

Traceback (most recent call last):
  File "D:/Program_Files/Python/legit8.py", line 10, in <module>
    hsv=cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
cv2.error: C:\projects\opencv-python\opencv\modules\imgproc\src\color.cpp:10705: error: (-215) (scn == 3 || scn == 4) && (depth == CV_8U || depth == CV_32F) in function cv::cvtColor

Upvotes: 0

Views: 416

Answers (1)

magicleon94
magicleon94

Reputation: 5172

Your frame is probably None. This could be because of VideoCapture(1). If your webcam is the only cam connected to your computer, use VideoCapture(0)!

Upvotes: 3

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