发明名称 |
IMAGE PROCESSING APPARATUS, PRINTING APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM |
摘要 |
An image is divided into first a second regions on the basis of inputted image data, and a comparison is made between the gradation values of pixels in the first region and threshold values corresponding to the pixels of the first region of a dither mask. The results of the comparison are referenced to determine whether or not dots are formed in the pixels of the first region. Errors are calculated based on the results of determining the first boundary pixels, which are in the first region near the boundary between the first region second regions. Some of the errors are distributed as diffusion errors to pixels in the second region near the boundary. The diffusion errors distributed from the first boundary pixels are added, and it is determined whether or not dots are formed by the error diffusion method in the pixels of the second region.
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申请公布号 |
US2012243012(A1) |
申请公布日期 |
2012.09.27 |
申请号 |
US201213428462 |
申请日期 |
2012.03.23 |
申请人 |
KAKUTANI TOSHIAKI;SEIKO EPSON CORPORATION |
发明人 |
KAKUTANI TOSHIAKI |
分类号 |
H04N1/60 |
主分类号 |
H04N1/60 |
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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