发明名称 IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
摘要 PROBLEM TO BE SOLVED: To provide an image processing apparatus which can efficiently reduce the occurrence of moire in a dot image. SOLUTION: The image processing apparatus includes: a spatial filtering unit which applies spatial filtering to input image data to generate filtered image data such that the spatial filtering provides a broader dynamic range for outputs than for inputs; and a high-resolution conversion unit which interpolates the filtered image data in a first direction by an average of values of two pixels adjacent in the first direction, in a second direction perpendicular to the first direction by an average of values of two pixels adjacent in the second direction, and in a direction diagonal to the first and second directions by an average of four pixels surrounding a pixel of interest, thereby converting the filtered image data into high-resolution image data. COPYRIGHT: (C)2003,JPO
申请公布号 JP2003230010(A) 申请公布日期 2003.08.15
申请号 JP20020342093 申请日期 2002.11.26
申请人 RICOH CO LTD 发明人 KAWAMOTO HIROYUKI
分类号 G06T1/20;G06T3/40;G06T5/00;G06T5/20;H04N1/387;H04N1/40;H04N1/409;(IPC1-7):H04N1/409 主分类号 G06T1/20
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