opencv io_error ai_generated true

cv::CascadeClassifier: failed to load classifier

ID: opencv/cascade-classifier-error

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

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
4 active — — —

Root Cause

Haar/LBP cascade classifier XML file not found.

generic

Workarounds

  1. 92% success Use cv2.data.haarcascades + filename for OpenCV bundled cascades
  2. 90% success Verify XML file path: cv2.CascadeClassifier(cv2.data.haarcascades + "haarcascade_frontalface_default.xml")

Dead Ends

Common approaches that don't work:

  1. Download cascade from random internet source 78% fail

    Untrusted, may be corrupted

  2. Use empty classifier 88% fail

    No detections