CA2475777A1 - A recording medium containing positive and negative rounding information related to coded data of an image sequence - Google Patents
A recording medium containing positive and negative rounding information related to coded data of an image sequence Download PDFInfo
- Publication number
- CA2475777A1 CA2475777A1 CA002475777A CA2475777A CA2475777A1 CA 2475777 A1 CA2475777 A1 CA 2475777A1 CA 002475777 A CA002475777 A CA 002475777A CA 2475777 A CA2475777 A CA 2475777A CA 2475777 A1 CA2475777 A1 CA 2475777A1
- Authority
- CA
- Canada
- Prior art keywords
- information related
- rounding method
- image sequence
- image
- coded data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The present invention relates to a recording medium having recorded thereon information related to coded data of an image sequence. The information related to coded data of an image sequence is a set of coded frame information of a plurality of frames of an image sequence. The coded frame information includes information related to a difference image between an image of a current frame and a prediction image of the current frame. The prediction image is synthesized by performing motion compensation, information related to motion vectors estimated in performing the motion compensation, and rounding method information specifying either a positive rounding method or a negative rounding method for interpolating intensity values of pixels in performing the motion compensation. The information specifying either a positive rounding method or a negative rounding method for interpolating intensity values of pixels enables a decoder to synthesize a prediction image of the current frame by performing motion compensation according to the specified rounding method at the time of decoding the encoded data.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15065697 | 1997-06-09 | ||
JP9-150656 | 1997-06-09 | ||
CA 2240118 CA2240118C (en) | 1997-06-09 | 1998-06-08 | Image sequence coding method and decoding method |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2240118 Division CA2240118C (en) | 1997-06-09 | 1998-06-08 | Image sequence coding method and decoding method |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2475777A1 true CA2475777A1 (en) | 1998-12-09 |
CA2475777C CA2475777C (en) | 2005-10-04 |
Family
ID=25680294
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2318677 Expired - Fee Related CA2318677C (en) | 1997-06-09 | 1998-06-08 | Method and apparatus for image decoding |
CA 2475777 Expired - Fee Related CA2475777C (en) | 1997-06-09 | 1998-06-08 | A recording medium containing positive and negative rounding information related to coded data of an image sequence |
CA 2475779 Expired - Fee Related CA2475779C (en) | 1997-06-09 | 1998-06-08 | Digital portable terminal and method using positive and negative rounding for pixel value interpolation in motion compensation |
CA 2475778 Expired - Fee Related CA2475778C (en) | 1997-06-09 | 1998-06-08 | An image coding method and encoder using positive and negative rounding methods while performing motion compensation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2318677 Expired - Fee Related CA2318677C (en) | 1997-06-09 | 1998-06-08 | Method and apparatus for image decoding |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2475779 Expired - Fee Related CA2475779C (en) | 1997-06-09 | 1998-06-08 | Digital portable terminal and method using positive and negative rounding for pixel value interpolation in motion compensation |
CA 2475778 Expired - Fee Related CA2475778C (en) | 1997-06-09 | 1998-06-08 | An image coding method and encoder using positive and negative rounding methods while performing motion compensation |
Country Status (1)
Country | Link |
---|---|
CA (4) | CA2318677C (en) |
-
1998
- 1998-06-08 CA CA 2318677 patent/CA2318677C/en not_active Expired - Fee Related
- 1998-06-08 CA CA 2475777 patent/CA2475777C/en not_active Expired - Fee Related
- 1998-06-08 CA CA 2475779 patent/CA2475779C/en not_active Expired - Fee Related
- 1998-06-08 CA CA 2475778 patent/CA2475778C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2475778A1 (en) | 1998-12-09 |
CA2475779C (en) | 2005-10-25 |
CA2475777C (en) | 2005-10-04 |
CA2318677C (en) | 2002-04-16 |
CA2475779A1 (en) | 1998-12-09 |
CA2475778C (en) | 2005-10-04 |
CA2318677A1 (en) | 1998-12-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20130610 |