CA2294388A1 - Method for generating sprites for object-based coding systems using masks and rounding average - Google Patents

Method for generating sprites for object-based coding systems using masks and rounding average Download PDF

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Publication number
CA2294388A1
CA2294388A1 CA002294388A CA2294388A CA2294388A1 CA 2294388 A1 CA2294388 A1 CA 2294388A1 CA 002294388 A CA002294388 A CA 002294388A CA 2294388 A CA2294388 A CA 2294388A CA 2294388 A1 CA2294388 A1 CA 2294388A1
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Prior art keywords
sprite
video
pixels
video object
motion
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CA002294388A
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French (fr)
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CA2294388C (en
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Chuang Gu
Ming-Chieh Lee
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Microsoft Corp
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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
    • H04N19/649—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding the transform being applied to non rectangular image segments
    • 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
    • H04N19/20—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
    • H04N19/23—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with coding of regions that are present throughout a whole video segment, e.g. sprites, background or mosaic
    • 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
    • H04N19/537—Motion estimation other than block-based
    • 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
    • H04N19/537—Motion estimation other than block-based
    • H04N19/543—Motion estimation other than block-based using regions
    • 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
    • H04N19/56—Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search
    • 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
    • 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
    • H04N19/20—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding

Abstract

A sprite generation method used in video coding generates a sprite from the video objects in the frames of a video sequence. The method estimates the motion (1200) between a video object in a current frame and a sprite constructed from video objects for previous frames. Specifically, the method computes motion coefficients of a 2D
transform that minimizes the intensity errors between pixels in the video object and corresponding pixels inside the sprite. The method uses the motion coefficients from the previous frame (1206) as a starting point to minimizing the intensity errors. After estimating the motion parameters for an object in the current frame, the method transforms the video object to the coordinate system of the sprite. The method blends (1204) the warped pixels (1202) of the video object with the pixels at corresponding positions in the sprite using rounding average such that each video object in the video sequence provides substantially the same contribution to the sprite.
CA002294388A 1997-06-23 1998-06-22 Method for generating sprites for object-based coding systems using masks and rounding average Expired - Fee Related CA2294388C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/881,901 1997-06-23
US08/881,901 US6037988A (en) 1996-03-22 1997-06-23 Method for generating sprites for object-based coding sytems using masks and rounding average
PCT/US1998/013009 WO1998059497A1 (en) 1997-06-23 1998-06-22 Method for generating sprites for object-based coding systems using masks and rounding average

Publications (2)

Publication Number Publication Date
CA2294388A1 true CA2294388A1 (en) 1998-12-30
CA2294388C CA2294388C (en) 2007-04-24

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CA002294388A Expired - Fee Related CA2294388C (en) 1997-06-23 1998-06-22 Method for generating sprites for object-based coding systems using masks and rounding average

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US (1) US6037988A (en)
EP (1) EP1016286B1 (en)
JP (1) JP4572010B2 (en)
CA (1) CA2294388C (en)
DE (1) DE69831961T2 (en)
WO (1) WO1998059497A1 (en)

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Also Published As

Publication number Publication date
US6037988A (en) 2000-03-14
CA2294388C (en) 2007-04-24
EP1016286A1 (en) 2000-07-05
JP4572010B2 (en) 2010-10-27
DE69831961D1 (en) 2006-03-02
EP1016286B1 (en) 2005-10-19
WO1998059497A1 (en) 1998-12-30
JP2002506585A (en) 2002-02-26
EP1016286A4 (en) 2003-07-09
DE69831961T2 (en) 2006-07-27

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