Segmentation method of document images by two-dimensional fourier transformation. - Masahiko Hase; Yasushi Hoshino (Syst. Comput. Jpn., 1985)

A method for extracting marked regions from document images. - Masahiko Hase; Gen Suzuki; Hisayasu Itoh (Syst. Comput. Jpn., 1987)