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Kenil Vasani
Kenil Vasani

Kenil Vasani

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Asked: 2020-12-10T22:50:16+00:00 In:

OpenCV !_src.empty() in function ‘cvtColor’ error

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I am trying to do a basic colour conversion in python however I can’t seem to get past the below error. I have re-installed python, opencv and tried on both python 3.4.3 (latest) and python 2.7 (which is on my Mac).

I installed opencv using python’s package manager opencv-python.

Here is the code that fails:

frame = cv2.imread('frames/frame%d.tiff' % count)
frame_HSV= cv2.cvtColor(frame,cv2.COLOR_RGB2HSV)

This is the error message:

cv2.error: OpenCV(3.4.3) /Users/travis/build/skvark/opencv-python/opencv/modules/imgproc/src/color.cpp:181: error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'
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    1. Kenil Vasani

      Kenil Vasani

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      Best Answer

      This error happened because the image didn’t load properly . So you have problem with the previous line cv2.imread my suggestion is :

      • check if the images exist in the path you give

      • check the count variable if he have valid number

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