发明名称 Image reducing apparatus
摘要 An image reducing apparatus for obtaining a reduced image from an image of an original size has: a filter to execute a filtering process to the image of the original size every image block of a predetermined size; a discriminating circuit to discriminate a structure of the image block filter processed by the filter; a correcting circuit to correct an output of the filter in accordance with the discriminated structure; and a binarization unit to binarize the output of the filter. By executing the reduction suitable for the image content in consideration of the peripheral images of the object pixel to be reduced and the peripheral reduced images, a reduced image can be obtained without extinguishing the content of the image of the original size, and especially, without fading or losing the thin lines in the reduced image.
申请公布号 US5138672(A) 申请公布日期 1992.08.11
申请号 US19910670528 申请日期 1991.03.18
申请人 CANON KABUSHIKI KAISHA 发明人 HIRABAYASHI, YASUJI;MAEDA, MITSURU;YOSHIDA, TADASHI;KATAYAMA, AKIHIRO
分类号 G06T3/40;H04N1/393 主分类号 G06T3/40
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