CA2738329A1 - Picture level adaptive frame/field coding for digital video content - Google Patents
Picture level adaptive frame/field coding for digital video content Download PDFInfo
- Publication number
- CA2738329A1 CA2738329A1 CA 2738329 CA2738329A CA2738329A1 CA 2738329 A1 CA2738329 A1 CA 2738329A1 CA 2738329 CA2738329 CA 2738329 CA 2738329 A CA2738329 A CA 2738329A CA 2738329 A1 CA2738329 A1 CA 2738329A1
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- CA
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- Prior art keywords
- motion vector
- pictures
- associated reference
- fields
- coding mode
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Classifications
-
- 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
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/112—Selection of coding mode or of prediction mode according to a given display mode, e.g. for interlaced or progressive display mode
-
- 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
-
- 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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/573—Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction
Landscapes
- 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
A method and system of encoding and decoding digital video content.
The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each picture in said stream of pictures in either frame mode or in field mode.
The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each picture in said stream of pictures in either frame mode or in field mode.
Claims (18)
1. A method of encoding an image sequence having a plurality of pictures, wherein at least one of said plurality of pictures is a current picture comprising a pair of current fields to be encoded as a bi-predictive coded (B) picture, wherein each of said current fields is divided into at least a plurality of macroblocks, comprising:
selectively encoding at least one of said plurality of pictures in a frame coding mode;
selectively encoding at least one of said plurality of pictures in a field coding mode; and computing a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector.
selectively encoding at least one of said plurality of pictures in a frame coding mode;
selectively encoding at least one of said plurality of pictures in a field coding mode; and computing a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector.
2. The method of claim 1, wherein weights are applied to said two associated reference fields.
3. The method of claim 1, wherein said second motion vector is computed as follows:
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
4. An apparatus for encoding an image sequence having a plurality of pictures, wherein at least one of said plurality of pictures is a current picture comprising a pair of current fields to be encoded as a bi-predictive coded (B) picture, wherein each of said current fields is divided into at least a plurality of macroblocks, comprising:
selectively encoding at least one of said plurality of pictures in a frame coding mode;
selectively encoding at least one of said plurality of pictures in a field coding mode; and computing a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector.
selectively encoding at least one of said plurality of pictures in a frame coding mode;
selectively encoding at least one of said plurality of pictures in a field coding mode; and computing a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector.
5. The apparatus of claim 4, wherein weights are applied to said two associated reference fields.
6. The apparatus of claim 4, wherein said second motion vector is computed as follows:
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
7. A method of decoding an image sequence having a plurality of encoded pictures from a bitstream, wherein an encoded current picture comprising a pair of current fields is encoded as a bi-predictive coded (B) picture and where each of said current fields is divided into a plurality of macroblocks, comprising:
decoding at least one of said plurality of pictures in a frame coding mode and at least one of said plurality of pictures in a field coding mode;
where said decoding applies a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector; and using said plurality of decoded pictures to construct the image sequence.
decoding at least one of said plurality of pictures in a frame coding mode and at least one of said plurality of pictures in a field coding mode;
where said decoding applies a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector; and using said plurality of decoded pictures to construct the image sequence.
8. The method of claim 7, wherein weights are applied to said two associated reference fields.
9. The method of claim 7, wherein said second motion vector is computed as follows:
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
10. The method of claim 9, wherein each of said temporal distances is an approximation of the temporal distance, proportional distance to the temporal distance, or proportional approximation to the approximation of the temporal distance between said current picture and one of said two associated reference fields.
11. The method of claim 9, wherein each of said temporal distances is incremented by 1 per field in field coding mode; and wherein each of said temporal distances is incremented by 1 per frame for a variable n in frame coding mode, where n is a frame number.
12. The method of claim 7, wherein each of said two associated reference fields is either a top field or a bottom field.
13. An apparatus for decoding an image sequence having a plurality of encoded pictures from a bitstream, wherein an encoded current picture comprising a pair of current fields is encoded as a bi-predictive coded (B) picture and where each of said current fields is divided into a plurality of macroblocks, comprising:
means for decoding at least one of said plurality of pictures in a frame coding mode and at least one of said plurality of pictures in a field coding mode;
where said decoding applies a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector; and means for using said plurality of decoded pictures to construct the image sequence.
means for decoding at least one of said plurality of pictures in a frame coding mode and at least one of said plurality of pictures in a field coding mode;
where said decoding applies a first motion vector and a second motion vector that are derived from two associated reference fields for each of said macroblocks, wherein said second motion vector is computed using an offset that is applied to said first motion vector; and means for using said plurality of decoded pictures to construct the image sequence.
14. The apparatus of claim 13, wherein weights are applied to said two associated reference fields.
15. The apparatus of claim 13, wherein said second motion vector is computed as follows:
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
where MV2 is said second motion vector, where MV1 is said first motion vector, where DMV is said offset, where TR1 and TR2 are temporal distances between said current picture and said two associated reference fields.
16. The apparatus of claim 15, wherein each of said temporal distances is an approximation of the temporal distance, proportional distance to the temporal distance, or proportional approximation to the approximation of the temporal distance between said current picture and one of said two associated reference fields.
17. The apparatus of claim 15, wherein each of said temporal distances is incremented by 1 per field in field coding mode; and wherein each of said temporal distances is incremented by 1 per frame for a variable n in frame coding mode, where n is a frame number.
18. The apparatus of claim 13, wherein each of said two associated reference fields is either a top field or a bottom field.
Applications Claiming Priority (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33300401P | 2001-11-21 | 2001-11-21 | |
| US60/333,004 | 2001-11-21 | ||
| US33392101P | 2001-11-27 | 2001-11-27 | |
| US60/333,921 | 2001-11-27 | ||
| US39571702P | 2002-07-12 | 2002-07-12 | |
| US39570802P | 2002-07-12 | 2002-07-12 | |
| US60/395,717 | 2002-07-12 | ||
| US60/395,708 | 2002-07-12 | ||
| US10/301,203 US20030099294A1 (en) | 2001-11-27 | 2002-11-20 | Picture level adaptive frame/field coding for digital video content |
| US10/301,203 | 2002-11-20 | ||
| CA2468086A CA2468086C (en) | 2001-11-21 | 2002-11-21 | Picture level adaptive frame/field coding for digital video content |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2468086A Division CA2468086C (en) | 2001-11-21 | 2002-11-21 | Picture level adaptive frame/field coding for digital video content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2738329A1 true CA2738329A1 (en) | 2003-06-05 |
| CA2738329C CA2738329C (en) | 2012-09-18 |
Family
ID=44166572
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2738322A Expired - Lifetime CA2738322C (en) | 2001-11-21 | 2002-11-21 | Picture level adaptive frame/field coding for digital video content |
| CA2738329A Expired - Lifetime CA2738329C (en) | 2001-11-21 | 2002-11-21 | Picture level adaptive frame/field coding for digital video content |
| CA2738339A Expired - Lifetime CA2738339C (en) | 2001-11-21 | 2002-11-21 | Picture level adaptive frame/field coding for digital video content |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2738322A Expired - Lifetime CA2738322C (en) | 2001-11-21 | 2002-11-21 | Picture level adaptive frame/field coding for digital video content |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2738339A Expired - Lifetime CA2738339C (en) | 2001-11-21 | 2002-11-21 | Picture level adaptive frame/field coding for digital video content |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107071404B (en) |
| CA (3) | CA2738322C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117692660A (en) | 2019-03-12 | 2024-03-12 | Lg电子株式会社 | Image encoding/decoding method and data transmission method |
| CN111885335B (en) * | 2020-06-19 | 2022-03-29 | 成都东方盛行电子有限责任公司 | Ultrahigh-definition down-conversion rendering method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06197334A (en) * | 1992-07-03 | 1994-07-15 | Sony Corp | Picture signal coding method, picture signal decoding method, picture signal coder, picture signal decoder and picture signal recording medium |
| US6968003B1 (en) * | 1996-01-29 | 2005-11-22 | International Business Machines Corporation | Speed-memory tradeoff for MPEG decoders |
| KR100355324B1 (en) * | 1996-12-12 | 2002-11-18 | 마쯔시다덴기산교 가부시키가이샤 | Picture encoder and picture decoder |
| CN1297147C (en) * | 1997-03-07 | 2007-01-24 | 通用仪器公司 | Prediction and coding of BI-directionally predicted video object planes for interlaced digital video |
| KR100328417B1 (en) * | 1998-03-05 | 2002-03-16 | 마츠시타 덴끼 산교 가부시키가이샤 | Image enconding/decoding apparatus, image encoding/decoding method, and data recording medium |
| CN1306725A (en) * | 1999-03-26 | 2001-08-01 | 皇家菲利浦电子有限公司 | Video coding method and corresponding video coder |
| CN1166213C (en) * | 1999-04-30 | 2004-09-08 | 皇家菲利浦电子有限公司 | Video encoding method with selection of B-frame encoding mode |
| US6983013B1 (en) * | 1999-08-03 | 2006-01-03 | Koninklijke Philips Electronics N.V. | Method and device for encoding video signal |
-
2002
- 2002-11-21 CA CA2738322A patent/CA2738322C/en not_active Expired - Lifetime
- 2002-11-21 CN CN201610842086.1A patent/CN107071404B/en not_active Expired - Lifetime
- 2002-11-21 CA CA2738329A patent/CA2738329C/en not_active Expired - Lifetime
- 2002-11-21 CA CA2738339A patent/CA2738339C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN107071404A (en) | 2017-08-18 |
| CA2738322C (en) | 2013-12-31 |
| CN107071404B (en) | 2020-01-24 |
| CA2738322A1 (en) | 2003-06-05 |
| CA2738339A1 (en) | 2003-06-05 |
| CA2738329C (en) | 2012-09-18 |
| CA2738339C (en) | 2012-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20221121 |