发明授权
US07471838B2 Image data processing apparatus, image data processing method, and computer readable medium
有权
图像数据处理装置，图像数据处理方法和计算机可读介质
- 专利标题： Image data processing apparatus, image data processing method, and computer readable medium
- 专利标题（中）： 图像数据处理装置，图像数据处理方法和计算机可读介质
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申请号： US11842928申请日： 2007-08-21
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公开(公告)号： US07471838B2公开(公告)日： 2008-12-30
- 发明人: Jun Moroo , Tsugio Noda
- 申请人： Jun Moroo , Tsugio Noda
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Staas & Halsey LLP
- 优先权： JP2003-142582 20030520
- 主分类号： G06K9/36
- IPC分类号： G06K9/36
摘要：
To reduce the processing required to embed a code into image data and decode the code. The present invention includes a block dividing section 101 that divides original image data 10 into a plurality of blocks (M×N); an averaging section 103 that extracts each average density (characteristic amount) in a plurality of blocks; and an encoding section 106 that embeds a code C (a plurality of bits) into a plurality of blocks by relating one code (one bit out of the code C) to each pair of blocks mutually located in near position in the plurality of blocks based on a magnitude relation of the average density.