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Title:
METHOD AND APPARATUS OF SMOOTHING FILTER FOR RINGING ARTEFACT REMOVAL
Document Type and Number:
WIPO Patent Application WO/2018/068744
Kind Code:
A1
Abstract:
Methods and apparatus for video coding using ringing smoothing filter (RSF) are disclosed. According to one method, ringing smoothing filter (RSF) is applied to the reconstructed residuals to form smoothed reconstructed residuals or applied to an in-loop-filtered reconstructed block to form a smoothed-filtered reconstructed block for the current block, where the RSF corresponds to an edge-preserving filter. The ringing smoothing filter (RSF) may correspond to a bilateral filter. According to another method, adaptive RSF is derived based on information comprising Intra prediction mode or Inter prediction mode. In yet another method, whether to apply ringing smoothing filter (RSF) to a current block in the current image is determined based on one or more control flags. If the control flag (s) indicates the RSF being on for the current block, the RSF is applied to the current block.

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Inventors:
SU YU-CHI (CN)
CHUANG TZU-DER (CN)
CHEN CHING-YEH (CN)
HSU CHIH-WEI (CN)
HUANG YU-WEN (CN)
Application Number:
PCT/CN2017/105845
Publication Date:
April 19, 2018
Filing Date:
October 12, 2017
Export Citation:
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Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/80
Foreign References:
US20130286288A12013-10-31
CN103220529A2013-07-24
CN105141948A2015-12-09
CN104994397A2015-10-21
CN104732492A2015-06-24
US20150189329A12015-07-02
US20030219073A12003-11-27
Other References:
PARIS ET AL.: "Bilateral Filtering: Theory and Applications, Foundations and Trends", COMPUTER GRAPHICS AND VISION, vol. 4, no. 1, 2008, pages 1 - 73
VALIN J. M., DIRECTIONAL DERINGING FILTER
FENG Z., EDGE-BASED ADAPTIVE DIRECTIONAL INTRA PREDICTION
See also references of EP 3516876A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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