JPH06511361A - アダプティブ・ブロックサイズイメージ圧縮方法およびシステム - Google Patents
アダプティブ・ブロックサイズイメージ圧縮方法およびシステムInfo
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- JPH06511361A JPH06511361A JP5500614A JP50061493A JPH06511361A JP H06511361 A JPH06511361 A JP H06511361A JP 5500614 A JP5500614 A JP 5500614A JP 50061493 A JP50061493 A JP 50061493A JP H06511361 A JPH06511361 A JP H06511361A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/40—Tree coding, e.g. quadtree, octree
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
- H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
- H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
- H04N1/415—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks
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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
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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
- H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
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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
- H04N19/146—Data rate or code amount at the encoder output
- H04N19/15—Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
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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
- H04N19/154—Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
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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
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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
- H04N19/18—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 a set of transform coefficients
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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
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/96—Tree coding, e.g. quad-tree 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
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/98—Adaptive-dynamic-range coding [ADRC]
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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
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
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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
- H04N19/146—Data rate or code amount at the encoder output
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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
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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
- H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
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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
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Image Processing (AREA)
- Color Television Systems (AREA)
- Control Of El Displays (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
Description
Claims (2)
- 1.ディスクリート・コサイン変換(DCT)オペレーションを行うことにより 、送信のための入力画素データのブロックおよび、前記ブロックを構成するサブ ブロツクの少なくとも1つの所定レベルの前記サブブロツクを、DC(最低周波 数)およびAC(交流)のDCT係数値の対応するイメージブロックおよびサブ ブロツクを生成するように圧縮するためのアダプティプ.ブロックサイズ・イメ ージ圧縮システムであって、前記DCT係数値の各イメージブロックおよびイメ ージサブブロツクの対応する各グループのために決定し、所定のコーディングフ ォーマットに基づき、各々にエンコードされた前記イメージブロックおよび前記 DCT係数値のイメージサブブロツクの対応する前記各グループに関する必要と されるピット数を表すビットカウントを決定する事と、前記イメージブロックお よび前記DCT係数値のイメージサブブロツクの対応する前記各グループを、前 記ピットカウントから、所定のコーディングフォーマットに基づき、必要とされ る更に少ない数のピット数を決定する事と、1つの合成イメージブロックを形成 するため、前記コード化フォーマットに基づきエンコードするために要するより 少ない数のDCT係数値の前記イメージブロックおよび前記イメージサブブロツ クの1つを選択する事と、所定のオーダリングフォーマットに基づき、前記合成 イメージブロックの前記DCT係数値をオーダリングする事と、所定の前記エン コーディングフォーマットに基づき、前記合成イメージブロックの前記オーダリ ングされたDCT係数値をエンコードする事と、 前記合成イメージブロックの前記イメージブロックおよび前記イメージサブブロ ツクの選択された1つを表す情報と共に、前記合成イメージブロックの、エンコ ードされ且つオーダーされた前記DCT係数値をアセンブルする事と、画素デー タの前記ブロックに更なる圧縮を与えるサブシステムと、 前記画素データの入力ブロックを受け取り、第一のディスクリート・コサイン変 換(DCT)オペレーションを画素ブロックで行い、DCおよびACのDCT係 数値の対応する第一のブロックを生成し、 前記DCおよびACのDCT係数の前記第一ブロックの前記DCのDCT係数で 第一の付加的なDCTオペレーションを伴う付加的DCTオペレーションを連続 して行い、結果としてDCおよびACのDCT係数の最終ブロックを生成する最 後の付加的DCTオペレーションを伴う付加的DCTオペレーションの結果とし てのDC係数値を獲得し、前記DCおよびACのDCT係数値の前記最終ブロッ クの出力を供給する、デスクリート・カドツリー(quadtree)変換手段 と、前記DCおよびACのDCT係数値の前記最終ブロックの各々を受け取り、 前記所定のコーディングフォーマットに基づきエンコードされる時、前記最終ブ ロックDCおよびACのDCT係数値の各々の長さを表す対応するコード長を生 成し、前記コード長の各々の値を、イメージブロックおよびイメージサブブロツ クの各々のためのDCのDCT係数の代わりに.前記ピットカウント決定におい て挿入するコード長決定手段であり、 前記イメージブロックおよび前記イメージサブブロツクの各々の1つが、前記コ ード長値を用いた前記合成イメージブロックのために選択され、 前記DCおよびACのDCT係数値の前記最終ブロックの各々を受け取り、 前記イメージブロックおよび前記イメージサブブロツクの選択された各々1つの DCのDCT係数を、前記最終ブロックのDCおよびACのDCT係数値の対応 する各々の1つに置き換える置換え手段と、 を具備することを特徴とするアダプティプ・ブロックサイズイメージ圧縮システ ム。
- 2.前記置換え手段は、更に、 前記最終ブロックDCおよびACのDCT係数値を、前記所定のオーダリングフ ォーマットに基づきオーダリングするためのオーダリング手段と、 前記最終ブロックDCおよびACのDCT係数値を、前記所定のエンコーディン グ形式に基づきエンコードするためのエンコーダ手段と、 を具備する前記サブシステムを有することを特徴とする請求項1に記載のアダプ ティプ・ブロックサイズ・イメージ圧縮システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71021691A | 1991-06-04 | 1991-06-04 | |
US710,216 | 1991-06-04 | ||
PCT/US1992/004606 WO1992022166A1 (en) | 1991-06-04 | 1992-06-03 | Adaptive block size image compression method and system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06511361A true JPH06511361A (ja) | 1994-12-15 |
JP3145403B2 JP3145403B2 (ja) | 2001-03-12 |
Family
ID=24853107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50061493A Expired - Lifetime JP3145403B2 (ja) | 1991-06-04 | 1992-06-03 | アダプティブ・ブロックサイズイメージ圧縮方法およびシステム |
Country Status (15)
Country | Link |
---|---|
US (1) | US5452104A (ja) |
EP (1) | EP0587783B1 (ja) |
JP (1) | JP3145403B2 (ja) |
KR (1) | KR0167367B1 (ja) |
AT (1) | ATE159396T1 (ja) |
AU (1) | AU658432B2 (ja) |
CA (1) | CA2110264C (ja) |
DE (1) | DE69222766T2 (ja) |
DK (1) | DK0587783T3 (ja) |
ES (1) | ES2110504T3 (ja) |
FI (1) | FI107489B (ja) |
GR (1) | GR3025624T3 (ja) |
HK (1) | HK1019838A1 (ja) |
NO (1) | NO305299B1 (ja) |
WO (1) | WO1992022166A1 (ja) |
Cited By (1)
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WO2008107943A1 (ja) * | 2007-03-01 | 2008-09-12 | Nippon Telegraph And Telephone Corporation | スケーラブル符号化方法および装置、スケーラブル復号方法および装置、並びにそれらのプログラムおよび記録媒体 |
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DK0587783T3 (da) | 1998-05-04 |
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KR0167367B1 (ko) | 1999-03-20 |
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DE69222766D1 (de) | 1997-11-20 |
NO934396D0 (no) | 1993-12-03 |
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GR3025624T3 (en) | 1998-03-31 |
FI935477A (fi) | 1993-12-07 |
FI107489B (fi) | 2001-08-15 |
KR940701621A (ko) | 1994-05-28 |
CA2110264A1 (en) | 1992-12-10 |
WO1992022166A1 (en) | 1992-12-10 |
ATE159396T1 (de) | 1997-11-15 |
AU658432B2 (en) | 1995-04-13 |
CA2110264C (en) | 2002-05-28 |
EP0587783B1 (en) | 1997-10-15 |
AU2186692A (en) | 1993-01-08 |
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