Title:
ENCODING DEVICE, DECODING DEVICE, AND ENCODING METHOD AND DECODING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/043769
Kind Code:
A1
Abstract:
An encoding device for encoding a bitstream including an image frame is disclosed. The encoding device comprises: a selection part for selecting a plurality of pixels including non-zero conversion coefficients in a conversion coefficient block constituting an image frame; an inverse conversion part for generating a plurality of groups of code candidates including combinations of codes assignable to the non-zero conversion coefficients of the selected plurality of pixels and generating candidate reconstruction blocks by performing an inverse conversion on each of the conversion coefficient blocks in which the sign is assigned to the non-zero conversion coefficients according to the generated plurality of groups of code candidates; a cost calculation part for calculating a cost on the basis of a pixel value difference between pixel values of a plurality of pixels selected from among the generated candidate reconstruction blocks and pixel values of other pixels adjacent to the selected plurality of pixels; and an encoding part for assigning different predetermined codewords to a plurality of groups of code candidates on the basis of the calculated cost and encoding one codeword of the codewords into encoding information of non-zero conversion coefficients of the selected plurality of pixels.
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Inventors:
WON KWANG-HYUN (KR)
KIM CHAN-YUL (KR)
LEE SUN-IL (KR)
KIM CHAN-YUL (KR)
LEE SUN-IL (KR)
Application Number:
PCT/KR2016/008441
Publication Date:
March 16, 2017
Filing Date:
August 01, 2016
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04N19/146; H04N19/176; H04N19/182; H04N19/44; H04N19/50; H04N19/51; H04N19/80
Foreign References:
| US20030123740A1 | 2003-07-03 | |||
| KR20100033676A | 2010-03-31 | |||
| KR20140027932A | 2014-03-07 |
Other References:
SHIN, YOON - JEONG ET AL.: "H.264/AVC to MPEG-2 Video Transcoding by Using Motion Vector Clustering", JOURNAL OF THE KOREA INSTITUTE OF ELECTRONIC COMMUNICATION SCIENCES, vol. 5, no. 1, 28 February 2010 (2010-02-28), pages 23 - 30, XP055441974
KIM, II KOO ET AL.: "HM9: High Efficiency Video Coding (HEVC) Test Model 9 Encoder Description", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU- T SG 16 WP3 AND ISO/IEC JTC1/SC29/WG11, 19 October 2012 (2012-10-19)
See also references of EP 3300366A4
KIM, II KOO ET AL.: "HM9: High Efficiency Video Coding (HEVC) Test Model 9 Encoder Description", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU- T SG 16 WP3 AND ISO/IEC JTC1/SC29/WG11, 19 October 2012 (2012-10-19)
See also references of EP 3300366A4
Attorney, Agent or Firm:
JEONG, Hong-sik (KR)
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