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A novel normal to tangent line (NTL) algorithm for scale invariant feature extraction for Urdu OCR.

Asma NaseerSarmad HussainKashif ZafarAyesha Khan
Published in: Int. J. Document Anal. Recognit. (2022)
Keyphrases
  • preprocessing
  • feature extraction
  • scale invariant
  • detection algorithm
  • multiscale
  • keypoints
  • matching algorithm
  • image matching
  • similarity measure
  • d objects
  • scale space
  • local binary pattern
  • character recognition