发明名称 Image processing device, image processing method, and storage medium for performing pseudo graduation-increased processing
摘要 An image processing device includes a first output unit that performs predetermined image processing for image data, and outputs image data having m bits per pixel; a second output unit that performs pseudo gradation-increase processing by a dither method or a multilevel error diffusion method for the output image data, and outputs image data having n bits per pixel, where n<m; and a compression unit that compresses the output image data. When a dither matrix for the dither method or a filter for the multilevel error diffusion method used by the second output unit for the pseudo gradation-increase processing is divided into plural pixel groups each including plural adjacent pixels and when each pixel group serves as a unit, processing parameters respectively set for pixels in the same pixel group are similar as compared with processing parameters respectively set for pixels in different pixel groups.
申请公布号 US8687906(B2) 申请公布日期 2014.04.01
申请号 US201113240640 申请日期 2011.09.22
申请人 KUBO MASAHIKO;YOKOSE TARO;TAKAHIRA TOSHIFUMI;KOYATSU JUN;KAWASHIMA HIDETOSHI;FUJI XEROX CO., LTD. 发明人 KUBO MASAHIKO;YOKOSE TARO;TAKAHIRA TOSHIFUMI;KOYATSU JUN;KAWASHIMA HIDETOSHI
分类号 G06K9/36;G06K9/46 主分类号 G06K9/36
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