Title:
画像符号化/画像復号化方法及び画像符号化/画像復号化装置
Document Type and Number:
Japanese Patent JP5044415
Kind Code:
B2
Abstract:
An image coding method includes a step of dividing an input image signal corresponding to one picture into a plurality of pixel block signals, a predictive image signal generating step of performing intra prediction for extrapolating a prediction pixel in a direction defined every plural prediction modes using reference pixels changed in number according to a distance between the prediction pixel and an encoded reference pixel to generate a predictive image signal and prediction mode information, a step of calculating a prediction error signal from the pixel block signal and the predictive image signal, a step of selecting one prediction mode of the plural prediction modes using the prediction error signal, and a step of encoding the image signal using the prediction error signal based on the selected prediction mode.
Inventors:
Akiyuki Tanizawa
Kenichi Chujou
Kenichi Chujou
Application Number:
JP2007547928A
Publication Date:
October 10, 2012
Filing Date:
November 27, 2006
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04N19/50; H04N19/103; H04N19/11; H04N19/117; H04N19/119; H04N19/134; H04N19/136; H04N19/137; H04N19/196; H04N19/46; H04N19/463; H04N19/59; H04N19/593; H04N19/60; H04N19/70; H04N19/91
Domestic Patent References:
| JP2005318497A | 2005-11-10 | |||
| JP2005198310A | 2005-07-21 | |||
| JPH06181523A | 1994-06-28 | |||
| JPH02143679A | 1990-06-01 |
Attorney, Agent or Firm:
Makoto Nakamura
Sadao Muramatsu
Ryo Hashimoto
Sadao Muramatsu
Ryo Hashimoto