Invention Grant
- Patent Title: Image processing method and apparatus
- Patent Title (中): 图像处理方法和装置
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Application No.: US10986944Application Date: 2004-11-15
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Publication No.: US07791759B2Publication Date: 2010-09-07
- Inventor: Nobuhiro Hoshi
- Applicant: Nobuhiro Hoshi
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2003-387875 20031118
- Main IPC: G06K15/00
- IPC: G06K15/00 ; G06T5/00
Abstract:
An image processing method includes the steps of detecting the dynamic range of input image data, performing edge enhancement processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels is determined based on a parameter indicating the level of the dynamic range and a parameter indicating the level of the edge enhancement processing.
Public/Granted literature
- US20050105114A1 Image processing method and apparatus Public/Granted day:2005-05-19
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