opencv runtime_error ai_generated true

cv::error: bad kernel size for morphological operation

ID: opencv/morphology-kernel-error

Also available as: JSON · Markdown
85%Fix Rate
88%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
4 active — — —

Root Cause

Morphological operation kernel size must be positive odd number.

generic

Workarounds

  1. 92% success Use odd kernel size: cv2.getStructuringElement(cv2.MORPH_RECT, (5,5))
  2. 88% success Choose appropriate kernel shape: MORPH_RECT, MORPH_ELLIPSE, MORPH_CROSS

Dead Ends

Common approaches that don't work:

  1. Use 1x1 kernel 82% fail

    No morphological effect

  2. Use even kernel size 88% fail

    Assertion error