Restoration Of Old Document Images Using Different Color Spaces: Restoration Of Old Document Images
Ederson Marcos Sgarbi, Wellington Aparecido Della Mura, Nikolas Moya, Jacques Facon, Ayala H.A.L. · 2014
Abstract: An obstacle in old document interpretation comes from the lack of image quality. Old documents frequently appear with digitization errors, uneven background, bleed-through effect. A new approach based on morpho-logical color operators to restore the color text is presented. The morphological tools are based on three color spaces, HSI well known in morphological processes, YCrCb and Y IQ rarely used in morphological proce-dures. Experimental results carried onto 100 old documents have proven that using YCrCb and Y IQ is as effective as using HSI to recover ancient texts in uneven and foxed background images, without presenting problems in hue ordination. 1