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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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