发明授权
US07532762B2 Image coding/decoding method, image coding apparatus and image decoding apparatus for obtaining decoded images having small distortion in DCT based standard coding/decoding
有权
图像编码/解码方法，用于在基于DCT的标准编码/解码中获得具有小失真的解码图像的图像编码装置和图像解码装置
- 专利标题： Image coding/decoding method, image coding apparatus and image decoding apparatus for obtaining decoded images having small distortion in DCT based standard coding/decoding
- 专利标题（中）： 图像编码/解码方法，用于在基于DCT的标准编码/解码中获得具有小失真的解码图像的图像编码装置和图像解码装置
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申请号： US10003113申请日： 2001-12-06
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公开(公告)号： US07532762B2公开(公告)日： 2009-05-12
- 发明人: Shunichi Sekiguchi , Minoru Etoh
- 申请人： Shunichi Sekiguchi , Minoru Etoh
- 申请人地址： JP Tokyo
- 专利权人： NTT DoComo, Inc.
- 当前专利权人： NTT DoComo, Inc.
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2000-373462 20001207; JP2001-072904 20010314
- 主分类号： G06K9/36
- IPC分类号： G06K9/36 ; G06K9/46 ; G06K9/48 ; G06F7/00 ; G06F15/00
摘要：
An image coding method is provided, in which the method includes the steps of: extracting edge information which represents an edge part of an original image; obtaining density information of an edge smoothed image from the original image by smoothing the edge part; obtaining coded edge information by coding the edge information according to a first coding algorithm; obtaining coded density information by coding the density information of the edge smoothed image according to a second coding algorithm; and sending the coded edge information and the coded density information as coded information to an image decoding apparatus.
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