KR970073170A - 비트 발생량 조절기능을 갖는 영상 부호화 시스템(improved image coding system having functions for controlling generated amount of coded bit streem) - Google Patents
비트 발생량 조절기능을 갖는 영상 부호화 시스템(improved image coding system having functions for controlling generated amount of coded bit streem) Download PDFInfo
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- KR970073170A KR970073170A KR1019960013773A KR19960013773A KR970073170A KR 970073170 A KR970073170 A KR 970073170A KR 1019960013773 A KR1019960013773 A KR 1019960013773A KR 19960013773 A KR19960013773 A KR 19960013773A KR 970073170 A KR970073170 A KR 970073170A
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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
- H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
-
- 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
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
-
- 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
- H04N19/115—Selection of the code volume for a coding unit prior to coding
-
- 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
- H04N19/124—Quantisation
- H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
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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
- H04N19/176—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 block, e.g. a macroblock
-
- 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
-
- 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
- H04N19/146—Data rate or code amount at the encoder output
-
- 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
- H04N19/146—Data rate or code amount at the encoder output
- H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Claims (5)
- 입력되는 현재 프레임과, 이 현재 프레임 및 재구성된 이전 프레임을 이용하는 움직임 추정, 보상을 통해 얻어지는 예측 프레임간의 차분신호에 대해 이산 코사인 변환, 양자화 및 엔트로피 부호화를 포함하는 부호화 수단을 통해 압축 부호화하여 부호화된 비트 스트림을 발생하며, 상기 양자화는 출력측 버퍼에 저장되는 상기비트 스트림의 충만상태 정보에 의거하여 그 스텝 사이즈가 조절되는 비트 발생량 조절기늘을 갖는 영상 부호화 시스템에 있어서, 상기 부호화 수단으로 부터 발생되는 상기 부호화 된 비트 스트림을 가산하여 매 프레임 단위로 각각의 비트 발생량을 산출하는 비트량 계산 수단; 및 상기 산출된 각 프레임의 비트 발생량에 대한 액티비티값을 산출하고, 이 산출된 액티비티값을 상기 부호화 수단을 통해 현재 부호화하고자 하는 프레임의 복잡도로서 참조하며, 상기 이산 코사인 변환을 통해 발생된 각 DCT 변환계수 블록들의 저역 통과 필터링시 그 대역폭을 적응적으로 제한하는 기설정된 복수의 가중치들중 상기 선출된 액티비티값에 대응하는 가중치를 결정하여 상기 부호화 수단에 제공하는 가중치 발생 수단을 더 포함하고, 상기 부호화 수단은, 상기 각 DCT 변환계수 불록들에 대한 양자화전에 상기 결정된 가중치에 의거하여 상기 각 DCT 변환계수 블록들의 통과 주파수 대역을 제한함으로써, 상기 각 DCT 변환계수 블록들의 고주파 성분을 선택적으로 필터링하는 것을 특징을 하는 비트 발생량 조절기능을 갖는 영상 부호화 시스템.
- 제1항 있어서, 상기 각 해당 프레임의 복잡도는, 전송율과 프레임율을 이용하여 산출되는 평균 비트량과 상기 해당 프레임의 발생 비트량에 의거하여 산출되는 것을 특지응로 하는 비트 발생량 조절기능을 갖는 영상 부호화 시스템.
- 제1항 또는 제2항에 있어서, 상기 기설정된 복수의 가중치는, 상기 각 DCT 변환계수 블록들의 각각 다른 필터계수 설정을 위한 정수값의 4개의 가중치를 포함하는 것을 특징으로 하는 비트 발생량 조절기능을 갖는 영상 부호화 시스템.
- 제3항에 있어서, 상기 부호화 수단은, 2차원 저역 통과 필터링을 통해 상기 결정된 가중치에 상응하여 상기 각 DCT 변환계수 블록들의 고주파 성분을 선택적으로 필터링하는 것을 특징으로 하는 비트 발생량 조절기능을 갖는 영상 부호화 시스템.
- 제4항 있어서, 상기 부호화 수단은, 상기 각 DCT 변환계수 블록들의 고주파 성분에 대한 선택적인 필터링 을 위해, 상기 결정된 가중치 이하의 고주파 성분을 2 로 나누어 상기 양자화를 수행하는 것을 특징으로 하는 비트 발생량 조절기능을 갖는 영상 부호화 시스템.※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960013773A KR100203710B1 (ko) | 1996-04-30 | 1996-04-30 | 비트 발생량 조절기능을 갖는 영상 부호화 시스템 |
US08/777,125 US5892548A (en) | 1996-04-30 | 1996-12-30 | Adaptive quantizer with modification of high frequency coefficients |
GB9700110A GB2316564B (en) | 1996-04-30 | 1997-01-06 | Adaptive quantizer for use in a video signal encoding system |
JP189997A JPH09307904A (ja) | 1996-04-30 | 1997-01-09 | 映像信号符号化システム用量子化器 |
CN97100256A CN1110962C (zh) | 1996-04-30 | 1997-01-10 | 用于视频信号编码系统的自适应量化器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960013773A KR100203710B1 (ko) | 1996-04-30 | 1996-04-30 | 비트 발생량 조절기능을 갖는 영상 부호화 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970073170A true KR970073170A (ko) | 1997-11-07 |
KR100203710B1 KR100203710B1 (ko) | 1999-06-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019960013773A Expired - Lifetime KR100203710B1 (ko) | 1996-04-30 | 1996-04-30 | 비트 발생량 조절기능을 갖는 영상 부호화 시스템 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5892548A (ko) |
JP (1) | JPH09307904A (ko) |
KR (1) | KR100203710B1 (ko) |
CN (1) | CN1110962C (ko) |
GB (1) | GB2316564B (ko) |
Cited By (2)
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KR100522121B1 (ko) * | 1997-12-17 | 2006-01-12 | 삼성전자주식회사 | 버퍼상태에 따른 dct계수를 제한하는 mpeg인코더 |
KR100585635B1 (ko) * | 1997-12-30 | 2006-08-21 | 엘지전자 주식회사 | 비트 할당 방법 |
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JPH1023415A (ja) * | 1996-07-05 | 1998-01-23 | Matsushita Electric Ind Co Ltd | 画像符号化復号方法および装置 |
JP4231565B2 (ja) * | 1997-12-19 | 2009-03-04 | テキサス インスツルメンツ インコーポレイテツド | 画像情報エンコーディングシステム |
US7092441B1 (en) * | 1998-03-20 | 2006-08-15 | Stmicroelectronics Asia Pacific Pte Limited | Moving pictures encoding with constant overall bit rate |
US6212232B1 (en) | 1998-06-18 | 2001-04-03 | Compaq Computer Corporation | Rate control and bit allocation for low bit rate video communication applications |
US6263021B1 (en) * | 1998-09-18 | 2001-07-17 | Sarnoff Corporation | Treating non-zero quantized transform coefficients as zeros during video compression processing |
JP4069524B2 (ja) * | 1998-11-10 | 2008-04-02 | ソニー株式会社 | 伝送方法及び装置 |
JP4344964B2 (ja) * | 1999-06-01 | 2009-10-14 | ソニー株式会社 | 画像処理装置および画像処理方法 |
US7096481B1 (en) | 2000-01-04 | 2006-08-22 | Emc Corporation | Preparation of metadata for splicing of encoded MPEG video and audio |
JP3496613B2 (ja) * | 2000-02-10 | 2004-02-16 | 日本電気株式会社 | デジタルコンテンツのコピー制御方法及び装置 |
CN1366778A (zh) * | 2000-04-27 | 2002-08-28 | 皇家菲利浦电子有限公司 | 视频压缩 |
US6847684B1 (en) * | 2000-06-01 | 2005-01-25 | Hewlett-Packard Development Company, L.P. | Zero-block encoding |
US6724817B1 (en) | 2000-06-05 | 2004-04-20 | Amphion Semiconductor Limited | Adaptive image data compression |
US6871006B1 (en) | 2000-06-30 | 2005-03-22 | Emc Corporation | Processing of MPEG encoded video for trick mode operation |
US6771703B1 (en) * | 2000-06-30 | 2004-08-03 | Emc Corporation | Efficient scaling of nonscalable MPEG-2 Video |
US7616690B2 (en) | 2000-10-31 | 2009-11-10 | Imec | Method and apparatus for adaptive encoding framed data sequences |
US6937770B1 (en) | 2000-12-28 | 2005-08-30 | Emc Corporation | Adaptive bit rate control for rate reduction of MPEG coded video |
US7023924B1 (en) | 2000-12-28 | 2006-04-04 | Emc Corporation | Method of pausing an MPEG coded video stream |
CA2345878A1 (en) * | 2001-05-01 | 2002-11-01 | Destiny Software Productions Inc. | Multi media distribution method and system |
US7123655B2 (en) * | 2001-08-09 | 2006-10-17 | Sharp Laboratories Of America, Inc. | Method for reduced bit-depth quantization |
US6980594B2 (en) | 2001-09-11 | 2005-12-27 | Emc Corporation | Generation of MPEG slow motion playout |
US6959116B2 (en) * | 2001-09-18 | 2005-10-25 | Emc Corporation | Largest magnitude indices selection for (run, level) encoding of a block coded picture |
US6968091B2 (en) * | 2001-09-18 | 2005-11-22 | Emc Corporation | Insertion of noise for reduction in the number of bits for variable-length coding of (run, level) pairs |
RU2322770C2 (ru) * | 2002-04-23 | 2008-04-20 | Нокиа Корпорейшн | Способ и устройство для указания параметров квантователя в системе видеокодирования |
EP1879401A4 (en) * | 2005-05-03 | 2012-03-28 | Panasonic Corp | DYNAMIC BILDCODING METHOD, DYNAMIC IMAGE DECODING METHOD AND DEVICE THEREFOR |
US7822117B1 (en) * | 2005-09-30 | 2010-10-26 | Ambarella, Inc. | Video encoder rate control using bit usage measuring and allocating by macroblock classes |
RU2414093C2 (ru) * | 2006-02-13 | 2011-03-10 | Кабусики Кайся Тосиба | Способ и устройство, и программа кодирования/декодирования видео |
EP1995967A4 (en) * | 2006-03-16 | 2009-11-11 | Huawei Tech Co Ltd | METHOD AND APPARATUS FOR ADAPTIVE QUANTIFICATION IN AN ENCODING PROCEDURE |
JP5482178B2 (ja) * | 2009-12-16 | 2014-04-23 | ソニー株式会社 | 送信装置および方法、並びに、受信装置および方法 |
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KR960010196B1 (ko) * | 1993-06-04 | 1996-07-26 | 배순훈 | 인간의 시각특성을 이용한 디씨(dc) 변환계수 양자화기 |
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-
1996
- 1996-04-30 KR KR1019960013773A patent/KR100203710B1/ko not_active Expired - Lifetime
- 1996-12-30 US US08/777,125 patent/US5892548A/en not_active Expired - Lifetime
-
1997
- 1997-01-06 GB GB9700110A patent/GB2316564B/en not_active Expired - Fee Related
- 1997-01-09 JP JP189997A patent/JPH09307904A/ja active Pending
- 1997-01-10 CN CN97100256A patent/CN1110962C/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100522121B1 (ko) * | 1997-12-17 | 2006-01-12 | 삼성전자주식회사 | 버퍼상태에 따른 dct계수를 제한하는 mpeg인코더 |
KR100585635B1 (ko) * | 1997-12-30 | 2006-08-21 | 엘지전자 주식회사 | 비트 할당 방법 |
Also Published As
Publication number | Publication date |
---|---|
CN1164167A (zh) | 1997-11-05 |
US5892548A (en) | 1999-04-06 |
GB9700110D0 (en) | 1997-02-26 |
KR100203710B1 (ko) | 1999-06-15 |
GB2316564A (en) | 1998-02-25 |
GB2316564B (en) | 2000-03-08 |
CN1110962C (zh) | 2003-06-04 |
JPH09307904A (ja) | 1997-11-28 |
GB2316564A8 (en) | 1998-03-18 |
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