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Ridges based Curled Textline Region Detection from ...
Fig.2. a) Grayscale camera-captured document image from CDBAR 2007 de-warping contest dataset. b) Smoothed image : Enhanced curled textlines struc-ture. c) Poor binarization (adaptive thresholding) result of smoothed image. d) Detected ridges from smooth image which are mapped over document image with di erent colors; represent curled textlines ......