公开(公告)号：US20200296255A1

公开(公告)日：2020-09-17

申请号：US16800098

申请日：2020-02-25

申请人： AYUMU HASHIMOTO ,  HAJIME TSUKAHARA ,  HIROKI SHIRADO ,  YUUKI NAKADA ,  TOMOHIKO ONO ,  TATSUYA OZAKI ,  HIROSHI KUBO ,  KIMIHARU YANAGISAWA ,  YOSHIAKI NAGAO ,  MASAHIRO ITOH

发明人： AYUMU HASHIMOTO ,  HAJIME TSUKAHARA ,  HIROKI SHIRADO ,  YUUKI NAKADA ,  TOMOHIKO ONO ,  TATSUYA OZAKI ,  HIROSHI KUBO ,  KIMIHARU YANAGISAWA ,  YOSHIAKI NAGAO ,  MASAHIRO ITOH

IPC分类号： H04N1/409 ,  H04N1/00

摘要： An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.