Separation of Manga Line Drawings and Screentones

Kota Ito, Yusuke Matsui, Toshihiko Yamasaki & Kiyoharu Aizawa
Screentones are unique expressions of Japanese comics (manga), which enrich their visual expression. However, such screentones have a very different visual nature from that of line drawing areas; this prevents us from applying various kinds of image processing techniques to manga. We propose a method for extracting line drawings and removing screentones. We employ Laplacians of Gaussian filters and flow-based differences of Gaussian filters, one for removing screentones and the other for preserving lines, and...
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