Invention Grant
US07884969B2 Image processing apparatus, printing apparatus and image processing method
有权
图像处理装置，打印装置和图像处理方法
- Patent Title: Image processing apparatus, printing apparatus and image processing method
- Patent Title (中): 图像处理装置，打印装置和图像处理方法
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Application No.: US11949385Application Date: 2007-12-03
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Publication No.: US07884969B2Publication Date: 2011-02-08
- Inventor: Hideki Takemura , Shigeru Fujita , Hiroki Horikoshi , Akira Ichimura , Takeshi Kuga , Hiroyuki Hosogoshi
- Applicant: Hideki Takemura , Shigeru Fujita , Hiroki Horikoshi , Akira Ichimura , Takeshi Kuga , Hiroyuki Hosogoshi
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2006-331000 20061207
- Main IPC: G06K15/00
- IPC: G06K15/00 ; G06K9/00 ; H04N1/407 ; H04N1/46
Abstract:
An image processing apparatus, a printing apparatus and an image processing method are provided which can perform quantization processing on image data at high speed based on an error diffusion method while at the same time avoiding degradations in a quality of printed images. When an error value represented by error data is a particular value, the error data is converted into compressed error data with a data volume less than that of the original error data.
Public/Granted literature
- US20080285084A1 IMAGE PROCESSING APPARATUS, PRINTING APPARATUS AND IMAGE PROCESSING METHOD Public/Granted day:2008-11-20
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