Fig. 4
From: Textline detection in degraded historical document images
Results of the proposed binarization method: a Otsu’s binarization result of Fig. 2 a. b Dilation result with filter size = 5. c Dilation result with filter size = 10. d Detected non-page regions from b. e Binarization result without non-page detection. f Binarization result with non-page detection. g Zoom-in of e. h Zoom-in of f