JP2008206211A5 - - Google Patents
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- JP2008206211A5 JP2008206211A5 JP2008145168A JP2008145168A JP2008206211A5 JP 2008206211 A5 JP2008206211 A5 JP 2008206211A5 JP 2008145168 A JP2008145168 A JP 2008145168A JP 2008145168 A JP2008145168 A JP 2008145168A JP 2008206211 A5 JP2008206211 A5 JP 2008206211A5
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- 239000011159 matrix material Substances 0.000 claims 18
- 230000000875 corresponding Effects 0.000 claims 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 4
- 230000001131 transforming Effects 0.000 claims 3
Claims (8)
前記入力画像信号と前記予測信号に基づいて、前記画素ブロックの予測誤差信号を求める予測誤差生成ステップと、
前記予測誤差信号を直交変換して直交変換信号を求める直交変換ステップと、
量子化マトリクスに従った量子化により、前記直交変換信号の量子化変換係数を求める量子化ステップと、
前記画素ブロックの、
(1)前記量子化マトリクスに対応するインデックス情報、
(2)前記予測信号の予測方式を示す予測モード情報、及び、
(3)前記量子化変換係数を示す情報
を符号化する符号化ステップと、
を備える動画像符号化方法。 A prediction signal generation step for obtaining a prediction signal of a pixel block of the input image signal;
A prediction error generating step for obtaining a prediction error signal of the pixel block based on the input image signal and the prediction signal;
An orthogonal transformation step of orthogonally transforming the prediction error signal to obtain an orthogonal transformation signal;
A quantization step of obtaining a quantization transform coefficient of the orthogonal transform signal by quantization according to a quantization matrix;
Of the pixel block,
(1) Index information corresponding to the quantization matrix,
(2) Prediction mode information indicating a prediction method of the prediction signal, and
(3) an encoding step for encoding information indicating the quantized transform coefficient;
A video encoding method comprising:
前記符号化ステップは、前記画素ブロックが前記第1モードのスライス内の画素ブロックである場合に、前記インデックス情報を符号化する、
ことを特徴とする請求項1の動画像符号化方法。 In the encoding step, quantization mode information indicating whether the quantization matrix is set in a pixel block unit or a second mode in which a flat matrix is used for each pixel block in the slice is used in slice units. Encoded with
The encoding step encodes the index information when the pixel block is a pixel block in the slice of the first mode.
The moving picture coding method according to claim 1, wherein:
前記入力画像信号と前記予測信号に基づいて、前記画素ブロックの予測誤差信号を求める予測誤差生成部と、
前記予測誤差信号を直交変換して直交変換信号を求める直交変換部と、
量子化マトリクスに従った量子化により、前記直交変換信号の量子化変換係数を求める量子化部と、
前記画素ブロックの、
(1)前記量子化マトリクスに対応するインデックス情報、
(2)前記予測信号の予測方式を示す予測モード情報、及び、
(3)前記量子化変換係数を示す情報
を符号化する符号化部と、
を備える動画像符号化装置。 A prediction signal generation unit for obtaining a prediction signal of a pixel block of an input image signal;
A prediction error generation unit for obtaining a prediction error signal of the pixel block based on the input image signal and the prediction signal;
An orthogonal transform unit that orthogonally transforms the prediction error signal to obtain an orthogonal transform signal;
A quantization unit for obtaining a quantized transform coefficient of the orthogonal transform signal by quantization according to a quantization matrix;
Of the pixel block,
(1) Index information corresponding to the quantization matrix,
(2) Prediction mode information indicating a prediction method of the prediction signal, and
(3) an encoding unit that encodes information indicating the quantized transform coefficient;
A video encoding device comprising:
前記符号化部は、前記画素ブロックが前記第1モードのスライス内の画素ブロックである場合に、前記インデックス情報を符号化する、
ことを特徴とする請求項3の動画像符号化装置。 The encoding unit includes quantization mode information indicating whether the quantization matrix is set in a pixel block unit or a second mode in which a flat matrix is used for each pixel block in the slice. Encoded with
The encoding unit encodes the index information when the pixel block is a pixel block in the slice of the first mode.
The moving picture coding apparatus according to claim 3.
(1)量子化マトリクスに対応するインデックス情報、
(2)予測信号の予測方式を示す予測モード情報、及び、
(3)量子化変換係数を示す情報
を復号する復号ステップと、
前記インデックス情報が示す前記量子化マトリクスに従った逆量子化により、前記量子化変換係数から直交変換信号を求める逆量子化ステップと、
前記直交変換信号を逆直交変換して予測誤差信号を求める逆直交変換ステップと、
前記予測モード情報が示す前記予測方式を用いて前記画素ブロックの前記予測信号を求める予測信号生成ステップと、
前記予測誤差信号と前記予測信号に基づいて、前記画素ブロックの復号画像信号を求める復号画像生成ステップと、
を備える動画像復号化方法。 Of the pixel block of the decoding target image,
(1) Index information corresponding to the quantization matrix,
(2) Prediction mode information indicating a prediction method of a prediction signal, and
(3) a decoding step of decoding information indicating quantized transform coefficients;
An inverse quantization step of obtaining an orthogonal transform signal from the quantized transform coefficient by inverse quantization according to the quantization matrix indicated by the index information;
An inverse orthogonal transform step for inverse orthogonal transform of the orthogonal transform signal to obtain a prediction error signal;
A prediction signal generation step of obtaining the prediction signal of the pixel block using the prediction method indicated by the prediction mode information;
A decoded image generation step for obtaining a decoded image signal of the pixel block based on the prediction error signal and the prediction signal;
A video decoding method comprising:
前記復号ステップは、前記画素ブロックが前記第1モードのスライス内の画素ブロックである場合に、前記インデックス情報を復号し、
前記逆量子化ステップは、前記量子化モード情報が第2モードを示す場合に、フラットなマトリクスに従った逆量子化を行う、
ことを特徴とする請求項5の動画像復号化方法。 In the decoding step, quantization mode information indicating whether the quantization matrix is set in a pixel block unit or a second mode in which a flat matrix is used for each pixel block in the slice is provided in a slice unit. Decrypt,
The decoding step decodes the index information when the pixel block is a pixel block in the slice of the first mode,
The inverse quantization step performs inverse quantization according to a flat matrix when the quantization mode information indicates a second mode;
The moving picture decoding method according to claim 5, wherein:
(1)量子化マトリクスに対応するインデックス情報、
(2)予測信号の予測方式を示す予測モード情報、及び、
(3)量子化変換係数を示す情報
を復号する復号部と、
前記インデックス情報が示す前記量子化マトリクスに従った逆量子化により、前記量子化変換係数から直交変換信号を求める逆量子化部と、
前記直交変換信号を逆直交変換して予測誤差信号を求める逆直交変換部と、
前記予測モード情報が示す前記予測方式を用いて前記画素ブロックの前記予測信号を求める予測信号生成部と、
前記予測誤差信号と前記予測信号に基づいて、前記画素ブロックの復号画像信号を求める復号画像生成部と、
を備える動画像復号化装置。 Of the pixel block of the decoding target image,
(1) Index information corresponding to the quantization matrix,
(2) Prediction mode information indicating a prediction method of a prediction signal, and
(3) a decoding unit that decodes information indicating quantized transform coefficients;
An inverse quantization unit for obtaining an orthogonal transform signal from the quantized transform coefficient by inverse quantization according to the quantization matrix indicated by the index information;
An inverse orthogonal transform unit that obtains a prediction error signal by performing inverse orthogonal transform on the orthogonal transform signal;
A prediction signal generation unit for obtaining the prediction signal of the pixel block using the prediction method indicated by the prediction mode information;
A decoded image generation unit for obtaining a decoded image signal of the pixel block based on the prediction error signal and the prediction signal;
A video decoding device comprising:
前記復号部は、前記画素ブロックが前記第1モードのスライス内の画素ブロックである場合に、前記インデックス情報を復号し、
前記逆量子化部は、前記量子化モード情報が第2モードを示す場合に、フラットなマトリクスに従った逆量子化を行う、
ことを特徴とする請求項7の動画像復号化装置。 The decoding unit includes quantization mode information that indicates whether the quantization matrix is set in a pixel block unit or a second mode in which a flat matrix is used for each pixel block in the slice. Decrypt,
The decoding unit decodes the index information when the pixel block is a pixel block in the slice of the first mode,
The inverse quantization unit performs inverse quantization according to a flat matrix when the quantization mode information indicates a second mode.
The moving picture decoding apparatus according to claim 7, wherein:
Priority Applications (1)
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JP2008145168A JP4768779B2 (en) | 2008-06-02 | 2008-06-02 | Video encoding / decoding method and apparatus |
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JP2008145168A JP4768779B2 (en) | 2008-06-02 | 2008-06-02 | Video encoding / decoding method and apparatus |
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JP2005075935A Division JP4146444B2 (en) | 2005-03-16 | 2005-03-16 | Video encoding method and apparatus |
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JP2008206211A JP2008206211A (en) | 2008-09-04 |
JP2008206211A5 true JP2008206211A5 (en) | 2010-03-25 |
JP4768779B2 JP4768779B2 (en) | 2011-09-07 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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BR122020013775B1 (en) | 2010-06-04 | 2022-04-19 | Sony Corporation. | Image processing device and method |
JP5707412B2 (en) | 2010-09-29 | 2015-04-30 | パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America | Image decoding method, image encoding method, image decoding device, image encoding device, program, and integrated circuit |
SG188255A1 (en) * | 2010-09-30 | 2013-04-30 | Panasonic Corp | Image decoding method, image coding method, image decoding apparatus, image coding apparatus, program, and integrated circuit |
JP5917117B2 (en) | 2011-12-07 | 2016-05-11 | 株式会社日立国際電気 | Image coding apparatus and image coding method |
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JP2002051221A (en) * | 2000-08-01 | 2002-02-15 | Canon Inc | Device, system and method for encoding and decoding image and storage medium |
JP2003284075A (en) * | 2002-01-18 | 2003-10-03 | Toshiba Corp | Method and apparatus for coding moving image, and method and apparatus for decoding |
JP3940657B2 (en) * | 2002-09-30 | 2007-07-04 | 株式会社東芝 | Moving picture encoding method and apparatus and moving picture decoding method and apparatus |
JP4290972B2 (en) * | 2002-12-18 | 2009-07-08 | 日本電信電話株式会社 | Image encoding method, image decoding method, image encoding device, image decoding device, image encoding program, image decoding program, recording medium on which image encoding program is recorded, and recording medium on which image decoding program is recorded |
KR20040058929A (en) * | 2002-12-27 | 2004-07-05 | 삼성전자주식회사 | Advanced method for encoding video based on DCT and apparatus thereof |
KR20040062257A (en) * | 2003-01-02 | 2004-07-07 | 삼성전자주식회사 | Advanced method and apparatus for noise estimation based on motion compensation, and method and apparatus for encoding video using noise estimation based on motion compensation |
KR100584552B1 (en) * | 2003-01-14 | 2006-05-30 | 삼성전자주식회사 | Method for encoding and decoding video and apparatus thereof |
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