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Patent Searching and Data


Title:
IMAGE COMPONENT PREDICTION METHOD AND APPARATUS, AND COMPUTER STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/258053
Kind Code:
A1
Abstract:
An image component prediction method and apparatus, and a computer storage medium. The method comprises: obtaining N adjacent reference pixel points corresponding to an image component to be predicted of a coding block in a video image (S701), wherein N is a preset integer value; comparing N first image component values corresponding to the N adjacent reference pixel points, and determining a first reference pixel subset and a second reference pixel subset (S702), wherein the first reference pixel subset comprises two adjacent reference pixel points corresponding to a minimum first image component value and a secondary minimum first image component value, and the second reference pixel subset comprises two adjacent reference pixel points corresponding to a maximum first image component value and a secondary maximum first image component value; performing comparison of the first image component value on the first reference pixel subset and/or the second reference pixel subset by means of a first mean value point, and determining two fitting points (S704); and determining a model parameter according to the two fitting points, and according to the model parameter, obtaining a prediction model corresponding to the image component to be predicted.

Inventors:
HUO JUNYAN (CN)
MA YANZHUO (CN)
WAN SHUAI (CN)
YANG FUZHENG (CN)
LI XINWEI (CN)
Application Number:
PCT/CN2019/092859
Publication Date:
December 30, 2020
Filing Date:
June 25, 2019
Export Citation:
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Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H04N19/50
Foreign References:
US20120183057A12012-07-19
CN104081436A2014-10-01
CN105069819A2015-11-18
CN109510994A2019-03-22
CN109561301A2019-04-02
GB2492394A2013-01-02
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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