CODEWITHSUNDEEP
pythonopencvraspberry-pi
Fanis Tsatsaronis
Fanis Tsatsaronis

Reputation: 71

Trouble with raspberry pi and OpenCV

I have a project in raspberry pi and I am using python. However I have a problem with the OpenCV when I am trying to run this code:

`import numpy as np
 import cv2

 cap = cv2.VideoCapture(0)

 while(True):
    # Capture frame-by-frame
    ret, frame = cap.read()

    # Our operations on the frame come here
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    # Display the resulting frame
    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()`

I get this error:

OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cvtColor, file /home/pi/opencv-3.1.0/modules/imgproc/src/color.cpp, line 8000

Traceback (most recent call last):
  File "test.py", line 11, in <module>
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
cv2.error: /home/pi/opencv-3.1.0/modules/imgproc/src/color.cpp:8000:  error: (-215) scn == 3 || scn == 4 in function cvtColor"

I have Python 3.4.2,OpenCV 3.1.0 and Numpy 1.8.2.

Upvotes: 2

Views: 2141

Answers (1)

Fanis Tsatsaronis
Fanis Tsatsaronis

Reputation: 71

So I found an answer. All I had to do was run this code on my raspberry pi:

sudo modprobe bcm2835-v4l2

Thank you for all the help.

Upvotes: 2

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