CA2475778A1 - An image coding method and encoder using positive and negative rounding methods while performing motion compensation - Google Patents

An image coding method and encoder using positive and negative rounding methods while performing motion compensation Download PDF

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Publication number
CA2475778A1
CA2475778A1 CA002475778A CA2475778A CA2475778A1 CA 2475778 A1 CA2475778 A1 CA 2475778A1 CA 002475778 A CA002475778 A CA 002475778A CA 2475778 A CA2475778 A CA 2475778A CA 2475778 A1 CA2475778 A1 CA 2475778A1
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Canada
Prior art keywords
motion compensation
positive
coding method
encoder
image coding
Prior art date
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Granted
Application number
CA002475778A
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French (fr)
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CA2475778C (en
Inventor
Yuichiro Nakaya
Yoshito Nejime
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Hitachi Ltd
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Hitachi Ltd.
Yuichiro Nakaya
Yoshito Nejime
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Application filed by Hitachi Ltd., Yuichiro Nakaya, Yoshito Nejime filed Critical Hitachi Ltd.
Priority claimed from CA 2240118 external-priority patent/CA2240118C/en
Publication of CA2475778A1 publication Critical patent/CA2475778A1/en
Application granted granted Critical
Publication of CA2475778C publication Critical patent/CA2475778C/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The present invention relates to an image coding method. The method is comprised of the steps of synthesizing a prediction image by performing motion compensation; and multiplexing information related to a difference image between an input image and the prediction image, and information related to motion vectors estimated in performing the motion compensation. The motion compensation is performed using a positive rounding method and a negative rounding method in interpolating intensity values of pixels.
CA 2475778 1997-06-09 1998-06-08 An image coding method and encoder using positive and negative rounding methods while performing motion compensation Expired - Fee Related CA2475778C (en)

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)

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CA2475778A1 true CA2475778A1 (en) 1998-12-09
CA2475778C CA2475778C (en) 2005-10-04

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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 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
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

Family Applications Before (2)

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 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

Family Applications After (1)

Application Number Title Priority Date Filing Date
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

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CA (4) CA2318677C (en)

Also Published As

Publication number Publication date
CA2475779A1 (en) 1998-12-09
CA2318677C (en) 2002-04-16
CA2475777A1 (en) 1998-12-09
CA2475777C (en) 2005-10-04
CA2475778C (en) 2005-10-04
CA2318677A1 (en) 1998-12-09
CA2475779C (en) 2005-10-25

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