CA2582665A1 - Picture coding method and picture decoding method - Google Patents
Picture coding method and picture decoding method Download PDFInfo
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- CA2582665A1 CA2582665A1 CA 2582665 CA2582665A CA2582665A1 CA 2582665 A1 CA2582665 A1 CA 2582665A1 CA 2582665 CA2582665 CA 2582665 CA 2582665 A CA2582665 A CA 2582665A CA 2582665 A1 CA2582665 A1 CA 2582665A1
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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
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
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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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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
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- 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
- H04N19/156—Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
- H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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- 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
- H04N19/162—User input
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- 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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- 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
- H04N19/174—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 slice, e.g. a line of blocks or a group of blocks
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- 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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- H04N19/182—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 pixel
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- 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
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Abstract
A picture coding apparatus (300) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a predictive picture for the input picture and generates coded picture data, and includes a picture decoding unit (104) for decoding coded picture data (Img) after the picture data (Img) is coded; inter pixel filters A and B (303 and 304) for performing inter pixel filter operation for decoded picture data (Recon) obtained by the picture decoding unit (104); switches (301 and 302) for selecting one of the inter pixel filters; and an inter picture predicting unit (108) for generating the predictive picture data (Pred) for the input picture data (Img) using filtered decoded picture data (FilteredImg1), as reference picture data (Ref), obtained by the selected inter pixel filter.
Claims
1. A method for coding a picture, said method comprising:
coding an input picture (Img) to obtain coded data (CodedRes) with or without using a predictive picture (Pred), wherein the predictive picture (Pred) is generated by referring to a reference picture (Ref);
decoding the coded data (CodedRes) to obtain a decoded picture (Recon);
filtering the decoded picture (Recon); and storing the decoded picture (FilteredImg2), which is filtered, for use as a reference picture (Ref) to code a following input picture (Img), characterized by performing the filtering of a decoded picture (Recon) with a higher smoothing level, if the input picture is coded in a coding process without using the predictive picture (Pred), than the filtering of a decoded picture (Recon) which is coded in a coding process using the predictive picture (Pred).
coding an input picture (Img) to obtain coded data (CodedRes) with or without using a predictive picture (Pred), wherein the predictive picture (Pred) is generated by referring to a reference picture (Ref);
decoding the coded data (CodedRes) to obtain a decoded picture (Recon);
filtering the decoded picture (Recon); and storing the decoded picture (FilteredImg2), which is filtered, for use as a reference picture (Ref) to code a following input picture (Img), characterized by performing the filtering of a decoded picture (Recon) with a higher smoothing level, if the input picture is coded in a coding process without using the predictive picture (Pred), than the filtering of a decoded picture (Recon) which is coded in a coding process using the predictive picture (Pred).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001276280 | 2001-09-12 | ||
JP2001-276280 | 2001-09-12 | ||
CA002428081A CA2428081C (en) | 2001-09-12 | 2002-09-11 | Picture coding method and picture decoding method |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002428081A Division CA2428081C (en) | 2001-09-12 | 2002-09-11 | Picture coding method and picture decoding method |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2582665A1 true CA2582665A1 (en) | 2003-03-27 |
CA2582665C CA2582665C (en) | 2012-04-24 |
Family
ID=19101005
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2582665A Expired - Lifetime CA2582665C (en) | 2001-09-12 | 2002-09-11 | Picture coding method and picture decoding method |
CA2582664A Expired - Lifetime CA2582664C (en) | 2001-09-12 | 2002-09-11 | Picture coding method and picture decoding method |
CA002428081A Expired - Lifetime CA2428081C (en) | 2001-09-12 | 2002-09-11 | Picture coding method and picture decoding method |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2582664A Expired - Lifetime CA2582664C (en) | 2001-09-12 | 2002-09-11 | Picture coding method and picture decoding method |
CA002428081A Expired - Lifetime CA2428081C (en) | 2001-09-12 | 2002-09-11 | Picture coding method and picture decoding method |
Country Status (14)
Country | Link |
---|---|
US (8) | US7126989B2 (en) |
EP (8) | EP2164267B1 (en) |
JP (13) | JP3756475B2 (en) |
KR (5) | KR100743818B1 (en) |
CN (6) | CN1493157A (en) |
AT (6) | ATE337683T1 (en) |
BR (1) | BRPI0205988B1 (en) |
CA (3) | CA2582665C (en) |
DE (4) | DE60239904D1 (en) |
DK (2) | DK1387585T3 (en) |
ES (6) | ES2271762T3 (en) |
MX (1) | MXPA03004077A (en) |
PT (1) | PT2296382E (en) |
WO (1) | WO2003026314A1 (en) |
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