WO2009133938A1 - 動画像符号化及び復号装置 - Google Patents
動画像符号化及び復号装置 Download PDFInfo
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- WO2009133938A1 WO2009133938A1 PCT/JP2009/058513 JP2009058513W WO2009133938A1 WO 2009133938 A1 WO2009133938 A1 WO 2009133938A1 JP 2009058513 W JP2009058513 W JP 2009058513W WO 2009133938 A1 WO2009133938 A1 WO 2009133938A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/117—Filters, e.g. for pre-processing or post-processing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/136—Incoming video signal characteristics or properties
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
- H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
Definitions
- the present invention is based on a moving picture coding apparatus that adds information for controlling filter processing performed in a moving picture decoding apparatus to encoded data, and information for controlling filter processing added to the encoded data.
- the present invention relates to a moving image decoding apparatus that performs a filtering process on a decoded image.
- a filter is designed so as to minimize an error between an input image and an image obtained by performing a filtering process on the decoded image by an encoding device.
- the decoding device uses the filter information to output an image obtained by performing filtering on the decoded image (S.Wittmann and T.Wedi, “Post-filter SEI message for 4: 4 : 4 coding ”, JVT of ISO / IEC MPEG & ITU-T VCEG, JVT-S030, April 2006 (hereinafter referred to as Wittmann)).
- Wittmann “Post-filter SEI message for 4: 4 : 4 coding ”, JVT of ISO / IEC MPEG & ITU-T VCEG, JVT-S030, April 2006
- the conventional technique has a problem that rounding cannot be freely controlled in accordance with an image.
- An object of the present invention is to provide a moving image encoding / decoding apparatus and method for reducing errors between an input image and a reference image and errors between an input image and an output image by freely controlling rounding according to the image.
- One aspect of the present invention sets a filter coefficient for filter processing in a video decoding device, and sets a rounding offset for controlling rounding of computation in the filter processing;
- a moving picture encoding apparatus including an encoding unit that outputs information on the filter coefficient and the rounding offset as encoded data.
- Another aspect of the present invention is obtained from the encoded data, an information acquisition unit that acquires filter coefficient and rounding offset information from the encoded data, a signal processing unit that generates a decoded image signal from the encoded data, and the encoded data. And a filter processing unit that performs a filtering process on a decoded image of the decoded image signal using the filter coefficient and the rounding offset.
- the input image signal 101 is input to the signal processor 110.
- the signal processor 110 receives the predicted image signal 108 from the predictor 114, calculates a residual signal between the predicted image signal 108 and the input image signal 101, converts the residual signal into a coefficient, and outputs residual information 102. Generate. Further, the signal processor 110 generates a local decoded image signal 103 from the predicted image signal 108 and the residual signal.
- the local decoded image signal output terminal of the signal processor 110 is connected to the frame memory 111, and the residual information output terminal is connected to the variable length encoder 115.
- the frame memory 111 stores the locally decoded image signal 103.
- the predictor 114 generates a predicted image signal from the image signal stored in the frame memory 111.
- the signal processor 110 includes a subtractor 120, an orthogonal transformer 121, a quantizer 122, an inverse quantizer 123, an inverse orthogonal transformer 124, and an adder 125.
- the frame memory 111 is connected to a filter / rounding offset design unit 112 and a filter processor 113.
- the filter / rounding offset design unit 112 designs filter coefficients and rounding offsets from the input image signal 101 and the local decoded image signal 104, and generates filter coefficients 105 and rounding offsets 126.
- the filter processor 113 performs filter processing on the locally decoded image signal 104 using the filter coefficient 105 and the rounding offset 126 to generate the image signal 106.
- variable length encoder 115 performs variable length encoding on the residual information 102, the filter coefficient 105, and the rounding offset 126, and outputs encoded data 109.
- the input image signal 101 is input to the signal processor 110.
- a residual signal between the predicted image signal 108 and the input image signal 101 is generated (S11), and residual information (for example, DCT coefficient) 102 obtained by orthogonally transforming the residual signal is generated and output. (S12).
- the local decoded image signal 103 is generated from the predicted image signal 108 and the residual signal and output (S13).
- the residual information 102 is input to the variable length encoder 115, and the locally decoded image signal 103 is stored in the frame memory 111.
- An input image signal 101 is input to the signal processor 110.
- the input image signal 101 is input to the subtracter 120.
- the subtracter 120 generates a residual signal 116 by taking the difference between the input image signal 101 and the predicted image signal 108.
- the residual signal 116 is subjected to orthogonal transformation, and a transform coefficient 117 is generated.
- the quantizer 122 the transform coefficient 117 is quantized.
- the quantized transform coefficient is input to the variable length encoder as residual information 102 on the one hand, and is inversely quantized by the inverse quantizer 123 on the other hand, and then inversely orthogonally transformed by the inverse orthogonal transformer 124. .
- the adder 125 the regenerated residual signal 119 and the predicted image signal 108 are added to generate the local decoded image signal 103.
- the locally decoded image signal 103 is stored in the frame memory 111.
- the local decoded image signal 104 read from the frame memory 111 is input to the filter / rounding offset design unit 112 and the filter processor 113.
- the filter / rounding offset design unit 112 designs a filter and rounding offset from the input image signal 101 and the locally decoded image signal 104 (S14). That is, the filter / rounding offset design unit 112 sets a filter coefficient for filter processing and a rounding offset for controlling rounding of the filter processing operation in the video decoding device.
- the filter coefficient 105 and the rounding offset 126 are input to the filter processor 113 and the variable length encoder 115.
- the filter processor 113 performs filter processing on the locally decoded image signal 104 using the filter coefficient 105 and the rounding offset 126 to generate the image signal 106 (S15).
- the image signal 106 is stored in the frame memory 111.
- the image signal stored in the frame memory 111 is read as the reference image signal 107 and input to the predictor 114.
- prediction is performed using the reference image signal 107, and the predicted image signal 108 is generated (S16).
- the predicted image signal 108 is input to the signal processor 110.
- the variable length encoder 115 the residual information 102, the filter coefficient 105, and the rounding offset 126 are subjected to variable length encoding, and encoded data 109 including these codes is generated (S17).
- the filter processing is performed by the following equation.
- S flt (x, y) is the pixel value at the position (x, y) of the image obtained by filtering
- S (x, y) is the pixel value at the position (x, y) of the locally decoded image
- N Is a predetermined natural number.
- h ij (int) , ⁇ (int) , and D are integer values
- h i j (int) is a filter coefficient
- ⁇ (int) is a rounding offset
- D is a predetermined value.
- Division is integer division.
- h i j (int) and ⁇ (int) are input with values set by the filter / rounding offset design unit 112.
- Expression (1) indicates that integer division is performed on a value obtained by adding a set rounding offset ⁇ (int) to a weighted sum of values of pixels located around the pixel (x, y) to be filtered. means. Note that the filter coefficient h i j (int) corresponds to the weight of the weighted sum.
- the filter processing is performed using a bit shift operation from the viewpoint of easy implementation and high speed.
- the filter / rounding offset design unit 112 sets h i j (int) and ⁇ (int) so that the error between the image obtained by the filtering process and the input image is reduced.
- the error for example, the square error in frame units
- S org (x, y) is a pixel at the position (x, y) of the input image
- X and Y are sets of x and y coordinates in the frame, respectively.
- a method of solving the Wiener-Hopf equation is known as a method for obtaining a filter coefficient that minimizes the square error.
- the filter coefficient h i j (int) and the rounding offset ⁇ (int) are integer values. Therefore, the filter coefficient h i j (int) and the rounding offset are approximated based on the above method. Find ⁇ (int) .
- Equation (1) is approximated by the following equation.
- h ij corresponds to an approximate value of h ij (int) / D
- ⁇ corresponds to an approximate value of ( ⁇ (int) ⁇ D / 2) / D
- D / 2 is a value for approximating integer division to floating point division.
- Hi j and ⁇ that minimize the value can be obtained by solving an equation obtained by subtracting 0 from the partial differentiation of equation (5) with hij and ⁇ . That is, equations for hij and ⁇
- h ij corresponds to an approximate value of h ij (int) / D
- ⁇ corresponds to an approximate value of ( ⁇ (int) ⁇ D / 2) / D
- the filter coefficient h ij (int) is rounded according to the following equation: An offset ⁇ (int) is obtained.
- h ij (int) and ⁇ (int) are obtained in units of frames, and are output as the filter coefficient 105 and the rounding offset 126.
- This moving picture decoding apparatus includes a variable length decoder 210, a signal processor 211, a frame memory 212, a predictor 213, and a filter processor 214.
- the variable length decoder 210 decodes the encoded data 201 and outputs residual information 202, a filter coefficient 209, and a rounding offset 208.
- the signal processor 211 reproduces the residual based on the residual information 202, and generates a decoded image signal 203 using the residual and the predicted image signal 207 from the predictor 213.
- the frame memory 212 stores the decoded image signal 203.
- the predictor 213 generates a predicted image signal 207 from the image signal stored in the frame memory 212.
- the signal processor 211 includes an inverse quantizer 217, an inverse orthogonal transformer 218, and an adder 219 as shown in FIG.
- the inverse quantizer 217 inversely quantizes the residual information 202 and generates a transform coefficient 215.
- the inverse orthogonal transformer 218 performs an inverse orthogonal transform on the transform coefficient 215 to generate a residual signal 216.
- the adder 219 adds the predicted image signal 207 and the residual signal 216 to generate a decoded image signal 203.
- the encoded data 109 output from the moving image encoding apparatus in FIG. 1 of the first embodiment is input to the variable length decoder 210 via the storage system or the transmission system.
- the encoded data 201 to be decoded includes signs of residual information, filter coefficients, and rounding offset information. Each of these codes is decoded by the variable length decoder 210 to output residual information 202, filter coefficient 209, and rounding offset 208 (S21).
- the residual information 202 is input to the signal processor 211, and the filter coefficient 209 and the rounding offset 208 are input to the filter processor 214.
- the signal processor 211 reproduces the residual based on the residual information 202, and generates the decoded image signal 203 from the predicted image signal 207 and the reproduced residual (S22).
- the encoded data is generated by the encoding apparatus of the first embodiment having the image signal processor 110 described with reference to FIG.
- the transform coefficient quantized as the residual information 202 is input to the inverse quantizer 217.
- the quantized transform coefficient is inversely quantized by the inverse quantizer 217, and then inversely orthogonally transformed to the inverse orthogonal transformer 218, whereby a residual signal 216 is generated.
- the adder 219 the decoded image signal 203 is obtained by adding the prediction image signal 207 to the residual signal 216.
- the decoded image signal 203 is accumulated in the frame memory 212, and the decoded image signal 204 read from the frame memory 212 is input to the filter processor 214.
- the filter processor 214 similarly to the filter processor 113 of the first embodiment, the decoded image signal 204 is filtered using the filter coefficient 209 and the rounding offset 208 to generate an image signal 205 ( S23).
- the image signal 205 is accumulated in the frame memory 212 and output as an output image signal.
- the image signal stored in the frame memory 212 is read as the reference image signal 206 and input to the predictor 213.
- the predictor 213 performs prediction using the reference image signal 206 and generates a predicted image signal 207.
- the predicted image signal 207 is input to the signal processor 211.
- the input image and the output image encoded by the moving image encoding device are compared.
- the error can be reduced. Further, since the error between the input image and the reference image can be reduced, the prediction efficiency is improved.
- FIG. 1 A third embodiment of the present invention will be described with reference to FIG.
- the basic configuration of the moving image encoding apparatus according to this embodiment is the same as that of the first embodiment.
- the filter processor 113 of FIG. 1 is not provided, and the predictor 310 generates the predicted image signal 305 using the locally decoded image signal 303 as the reference image signal 304.
- the signal processor 308 when the input image signal 301 is input to the signal processor 308, the signal processor 308 generates a residual signal between the predicted image signal 305 and the input image signal 301. Then, residual information 302 obtained by converting the residual signal is generated. The signal processor 308 generates a local decoded image signal 303 from the predicted image signal 305 and the residual signal. The residual information 302 is input to the variable length encoder 311, and the locally decoded image signal 303 is stored in the frame memory 309.
- the local decoded image signal 303 stored in the frame memory 309 is input to the predictor 310 as the reference image signal 304 and also input to the filter / rounding offset design unit 312.
- the filter / rounding offset design unit 312 designs a filter and rounding offset from the input image signal 301 and the locally decoded image signal 304.
- the filter / rounding offset design unit 312 sets the filter coefficient and the rounding offset so that the error between the image obtained by performing the filtering process on the decoded image in the moving image decoding apparatus and the input image is reduced.
- the operation of the filter / rounding offset design unit 312 may be the same as that of the filter / rounding offset design unit 112 of the first embodiment.
- the filter coefficient 307 and the rounding offset 313 are input to the variable length encoder 311 and encoded.
- FIG. 4 A fourth embodiment will be described with reference to FIG.
- the basic configuration of the moving picture decoding apparatus according to this embodiment is the same as that of the second embodiment.
- the image signal 406 output from the filter processor 413 is not accumulated in the frame memory 411, and the predictor 412 generates the predicted image signal 405 using the decoded image signal 403 as the reference image signal 404.
- the variable length decoder 409 decodes the encoded data 401, and the residual information 402 and the filter coefficient 408 are decoded.
- the rounding offset 407 is output.
- the residual information 402 is input to the signal processor 410, and the filter coefficient 408 and the rounding offset 407 are input to the filter processor 413.
- the signal processor 410 reproduces the residual based on the residual information 402, and generates a decoded image signal 403 from the predicted image signal 405 of the predictor 412 and the reproduced residual.
- the decoded image signal 403 is stored in the frame memory 411.
- the decoded image signal 403 of the frame memory 411 is input to the predictor 412 as the reference image signal 404.
- the predictor 412 generates a predicted image signal 405 using the reference image signal 404.
- the present invention it is possible to reduce the error between the input image and the reference image and the error between the input image and the output image by freely controlling rounding according to the image.
- the method of the present invention described in the embodiment of the present invention can be executed by a computer, and as a program that can be executed by the computer, a magnetic disk (flexible disk, hard disk, etc.), an optical disk (CD-ROM) , DVD, etc.) and storage media such as semiconductor memory can also be distributed.
- a magnetic disk flexible disk, hard disk, etc.
- an optical disk CD-ROM
- DVD digital versatile disk
- storage media such as semiconductor memory
- the image encoding and decoding method and apparatus according to the present invention are used for image compression processing in communication media, storage media, broadcast media, and the like.
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Abstract
Description
前記フィルタ係数及び前記丸めオフセットの情報を符号化データとして出力する符号化部とを備える動画像符号化装置を提供する。
図1を用いて第1の実施形態に係る動画像符号化装置の構成について説明する。入力画像信号101は信号処理器110に入力される。信号処理器110は予測器114から予測画像信号108を受け、この予測画像信号108と入力画像信号101との残差信号を計算し、この残差信号を係数に変換して残差情報102を生成する。また、信号処理器110は予測画像信号108と残差信号から局所復号画像信号103を生成する。信号処理器110の局所復号画像信号出力端はフレームメモリ111に接続され、その残差情報出力端は可変長符号化器115に接続される。フレームメモリ111は局所復号画像信号103を蓄積する。予測器114はフレームメモリ111に記憶された画像信号から予測画像信号を生成する。
図4を用いて本発明の第2の実施形態に係る動画像復号装置について説明する。この動画像復号装置は可変長復号器210,信号処理器211,フレームメモリ212,予測器213及びフィルタ処理器214によって構成される。可変長復号器210は符号化データ201を復号し、残差情報202、フィルタ係数209、丸めオフセット208を出力する。信号処理器211は残差情報202を基に残差を再生し、この残差と予測器213からの予測画像信号207とで復号画像信号203を生成する。フレームメモリ212は復号画像信号203を蓄積する。予測器213はフレームメモリ212に記憶された画像信号から予測画像信号207を生成する。
図7を用いて本発明の第3の実施形態について説明する。本実施形態に関する動画像符号化装置の基本構成は、第1の実施形態と同様である。但し、本実施形態では、図1のフィルタ処理器113は設けられていなく、予測器310では参照画像信号304として局所復号画像信号303を用いて予測画像信号305が生成される。
図8を用いて第4の実施形態について説明する。本実施形態に関する動画像復号装置の基本構成は、第2の実施形態と同様である。但し、フィルタ処理器413から出力される画像信号406がフレームメモリ411に蓄積されず、予測器412では、参照画像信号404として復号画像信号403を用いて予測画像信号405が生成される。
Claims (9)
- 動画像復号装置におけるフィルタ処理のためのフィルタ係数を設定し、前記フィルタ処理における演算の丸めを制御する丸めオフセットを設定する設定部と、
前記フィルタ係数及び前記丸めオフセットの情報を符号化データとして出力する符号化部と、
を備える動画像符号化装置。 - 入力画像信号と予測画像信号とを信号処理して局所復号画像を生成する信号処理部と、
前記動画像復号装置におけるフィルタ処理のために設定された前記フィルタ係数及び前記丸めオフセットを用いて前記局所復号画像にフィルタ処理を行なうフィルタ処理部と、
前記フィルタ処理によって得られる画像を参照画像として蓄積する画像蓄積部と、
蓄積された画像を用いて前記予測画像信号を生成する予測部と、
を備える請求項1の動画像符号化装置。 - 前記フィルタ処理部は、前記局所復号画像上でフィルタ処理対象画素の周辺に位置する画素の値の重み付き和に前記丸めオフセットを加えた値に対して整数除算を行なうことによって前記フィルタ処理を行なう、請求項2に記載の動画像符号化装置。
- 前記信号処理部は、前記入力画像信号と前記予測画像信号とを信号処理して残差情報を生成し、前記符号化部は前記フィルタ係数及び前記丸めオフセットの情報と共に前記残差情報を符号化して、前記符号化データを出力する、請求項3に記載の動画像符号化装置。
- 前記設定部は、フィルタ処理によって得られる画像と入力画像との誤差が少なくなるように前記丸めオフセットを設定する、請求項4に記載の動画像符号化装置。
- 前記設定部は、前記入力画像信号と前記局所復号信号を用いてフィルタ係数及び丸めオフセットを求める、請求項5に記載の動画像符号化装置。
- 符号化データからフィルタ係数及び丸めオフセットの情報を取得する情報取得部と、
前記符号化データから復号画像信号を生成する信号処理部と、
前記符号化データから得られた前記フィルタ係数及び前記丸めオフセットを用いて前記復号画像信号の復号画像にフィルタ処理を行なうフィルタ処理部と、
を備える動画像復号装置。 - 前記フィルタ処理によって得られる画像を参照画像として蓄積する蓄積部と、
蓄積された画像を用いて前記予測画像信号を生成する予測部と、
を備え、
前記信号処理部は前記符号化データと前記予測画像信号を用いて前記復号画像信号を生成する、請求項7の動画像復号装置。 - 前記フィルタ処理部は、前記復号画像上でフィルタ処理対象画素の周辺に位置する画素の値の重み付き和に前記丸めオフセットを加えた値に対して整数除算を行なうことによってフィルタ処理を行なう、請求項8に記載の動画像復号装置。
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CA2718341A CA2718341A1 (en) | 2008-04-30 | 2009-04-30 | Video encoding and decoding apparatus |
JP2010510167A JPWO2009133938A1 (ja) | 2008-04-30 | 2009-04-30 | 動画像符号化及び復号装置 |
CN200980107229.2A CN101960857A (zh) | 2008-04-30 | 2009-04-30 | 运动图像编码以及译码装置 |
BRPI0909151A BRPI0909151A2 (pt) | 2008-04-30 | 2009-04-30 | aparelho de codificação e decodificação de vídeo |
AU2009240883A AU2009240883A1 (en) | 2008-04-30 | 2009-04-30 | Time-varying image encoding and decoding device |
MX2010009616A MX2010009616A (es) | 2008-04-30 | 2009-04-30 | Dispositivo de codificacion y descodificacion de imagen variable en tiempo. |
EP09738875A EP2271113A4 (en) | 2008-04-30 | 2009-04-30 | PICTURE CODING AND PAGE DECODING DEVICE WITH TIME VARIATION |
US12/880,918 US20100329335A1 (en) | 2008-04-30 | 2010-09-13 | Video encoding and decoding apparatus |
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JP2017200198A (ja) * | 2009-12-18 | 2017-11-02 | シャープ株式会社 | 復号装置 |
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JP2006211152A (ja) * | 2005-01-26 | 2006-08-10 | Hokkaido Univ | 画像符号化装置、画像復号装置、画像符号化方法、画像復号方法、画像符号化用プログラム、画像復号用プログラム |
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US6091775A (en) * | 1997-04-17 | 2000-07-18 | Sharp Kabushiki Kaisha | Video-coding device and video-decoding device |
JP2001275110A (ja) * | 2000-03-24 | 2001-10-05 | Matsushita Electric Ind Co Ltd | 動的なループ及びポストフィルタリングのための方法及び装置 |
RU2322770C2 (ru) * | 2002-04-23 | 2008-04-20 | Нокиа Корпорейшн | Способ и устройство для указания параметров квантователя в системе видеокодирования |
US20040179610A1 (en) * | 2003-02-21 | 2004-09-16 | Jiuhuai Lu | Apparatus and method employing a configurable reference and loop filter for efficient video coding |
EP2041981B1 (en) * | 2006-07-18 | 2013-09-04 | Thomson Licensing | Methods and apparatus for adaptive reference filtering |
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2009
- 2009-04-30 WO PCT/JP2009/058513 patent/WO2009133938A1/ja active Application Filing
- 2009-04-30 EP EP09738875A patent/EP2271113A4/en not_active Withdrawn
- 2009-04-30 AU AU2009240883A patent/AU2009240883A1/en not_active Abandoned
- 2009-04-30 CA CA2718341A patent/CA2718341A1/en not_active Abandoned
- 2009-04-30 CN CN200980107229.2A patent/CN101960857A/zh active Pending
- 2009-04-30 KR KR1020107018994A patent/KR20100111732A/ko not_active Application Discontinuation
- 2009-04-30 MX MX2010009616A patent/MX2010009616A/es not_active Application Discontinuation
- 2009-04-30 RU RU2010137683/07A patent/RU2010137683A/ru not_active Application Discontinuation
- 2009-04-30 JP JP2010510167A patent/JPWO2009133938A1/ja active Pending
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2010
- 2010-09-13 US US12/880,918 patent/US20100329335A1/en not_active Abandoned
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JPH1169362A (ja) * | 1997-06-09 | 1999-03-09 | Hitachi Ltd | 動画像の符号化方法および復号化方法 |
JP2006135376A (ja) * | 2004-11-02 | 2006-05-25 | Toshiba Corp | 動画像符号化装置、動画像符号化方法、動画像復号化装置および動画像復号化方法 |
JP2006211152A (ja) * | 2005-01-26 | 2006-08-10 | Hokkaido Univ | 画像符号化装置、画像復号装置、画像符号化方法、画像復号方法、画像符号化用プログラム、画像復号用プログラム |
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JP2017200198A (ja) * | 2009-12-18 | 2017-11-02 | シャープ株式会社 | 復号装置 |
JP2018142978A (ja) * | 2009-12-18 | 2018-09-13 | シャープ株式会社 | 復号装置 |
Also Published As
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JPWO2009133938A1 (ja) | 2011-09-01 |
BRPI0909151A2 (pt) | 2018-02-06 |
EP2271113A1 (en) | 2011-01-05 |
RU2010137683A (ru) | 2012-06-10 |
KR20100111732A (ko) | 2010-10-15 |
MX2010009616A (es) | 2010-09-30 |
CA2718341A1 (en) | 2009-11-05 |
CN101960857A (zh) | 2011-01-26 |
AU2009240883A1 (en) | 2009-11-05 |
EP2271113A4 (en) | 2011-10-26 |
US20100329335A1 (en) | 2010-12-30 |
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