Apparatus and method for half-toning
US-2016344896-A1 · Nov 24, 2016 · US
Image processing apparatus configured to perform pixel dithering based on dithering table and pass information
US9224079B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9224079-B2 |
| Application number | US-201414487407-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 16, 2014 |
| Priority date | Sep 17, 2013 |
| Publication date | Dec 29, 2015 |
| Grant date | Dec 29, 2015 |
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Abstract
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An image processing apparatus includes a dithering unit that retains a dithering table; a gray-scale value input unit that inputs, to the dithering unit, a gray-scale value of each pixel constituting image data of a predetermined color; and a pass information input unit that inputs, to the dithering unit, pass information indicating whether printing is a first pass to perform printing on a recording medium yet to be printed or a second pass to perform reprinting on the same surface of the recording medium already subjected to printing. The dithering unit performs dithering on each pixel based on the dithering table, the gray-scale value, and the pass information.
First claim
Opening claim text (preview).
What is claimed is: 1. An image processing apparatus comprising: a dithering unit that retains a dithering table and a threshold, the dithering table providing a matrix of pixels, each of the pixels having a corresponding value; a gray-scale value input unit that inputs, to the dithering unit, a gray-scale value of each pixel constituting image data of a predetermined color; and a pass information input unit that inputs, to the dithering unit, pass information indicating whet…
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- G06K15/1876Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9224079B2 cover?
- An image processing apparatus includes a dithering unit that retains a dithering table; a gray-scale value input unit that inputs, to the dithering unit, a gray-scale value of each pixel constituting image data of a predetermined color; and a pass information input unit that inputs, to the dithering unit, pass information indicating whether printing is a first pass to perform printing on a reco…
- Who is the assignee on this patent?
- Sato Nobuyuki, Ricoh Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G06K15/1876. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 29 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).