Title:
METHOD AND APPARATUS FOR PREDICTING A COLOR SPACE, AND METHOD AND APPARATUS FOR ENCODING/DECODING AN IMAGE USING SAME
Document Type and Number:
WIPO Patent Application WO/2012/002765
Kind Code:
A2
Abstract:
One embodiment of the present invention relates to a method and apparatus for predicting a color space and to a method and apparatus for encoding/decoding an image using same. According to one embodiment of the present invention, provided is an apparatus and method for predicting a color space, comprising: a predictive weighted value calculation unit which determines a weighted block from an encoded peripheral block of the current block, and calculates a predictive weighted value for each frequency domain from the weighted block; a predictive frequency selection unit which calculates predictive gains for each frequency domain from the predictive weighted value for each frequency domain, and selects a frequency domain to be used in predicting a color space, using the predictive gains for each frequency domain; and a frequency domain prediction unit which receives a converted residual block, and predicts a color space for the converted residual block from the predictive weighted value of the selected frequency domain. According to one embodiment of the present invention, provided is an apparatus and method for predicting a color space, and a method and apparatus for encoding/decoding an image using same, comprising: a predictive weighted value calculation unit which determines a weighted block from a decoded peripheral block of the current block, and calculates a predictive weighted value for each frequency domain from the weighted block; a predictive frequency selection unit which calculates predictive gains for each frequency domain from the predictive weighted value for each frequency domain, and selects a frequency domain to be used in predicting a color space, using the predictive gains for each frequency domain; and a frequency domain restoring unit which restores a converted residual block from a color space prediction block.
Inventors:
SONG JINHAN (KR)
LIM JEONGYEON (KR)
KIM YONGGOO (KR)
CHOE YOONSIK (KR)
CHOI YUNGHO (KR)
JEONG JINWOO (KR)
LIM JEONGYEON (KR)
KIM YONGGOO (KR)
CHOE YOONSIK (KR)
CHOI YUNGHO (KR)
JEONG JINWOO (KR)
Application Number:
PCT/KR2011/004839
Publication Date:
January 05, 2012
Filing Date:
July 01, 2011
Export Citation:
Assignee:
SK TELECOM CO LTD (KR)
SONG JINHAN (KR)
LIM JEONGYEON (KR)
KIM YONGGOO (KR)
CHOE YOONSIK (KR)
CHOI YUNGHO (KR)
JEONG JINWOO (KR)
SONG JINHAN (KR)
LIM JEONGYEON (KR)
KIM YONGGOO (KR)
CHOE YOONSIK (KR)
CHOI YUNGHO (KR)
JEONG JINWOO (KR)
International Classes:
H04N7/24; H04N11/04
Domestic Patent References:
| WO2009001864A1 | 2008-12-31 |
Foreign References:
| KR20060079051A | 2006-07-05 |
Attorney, Agent or Firm:
LEE, CHULHEE (KR)
이철희 (KR)
이철희 (KR)
Download PDF:
Claims: