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Title:
INTERFRAME PREDICTIVE CODING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/040869
Kind Code:
A1
Abstract:
Embodiments of the present application disclose an interframe predictive coding method and device. The method comprises: dividing a frame to be coded into a plurality of blocks to be coded by using an encoder; determining, for each block to be coded, a forward coding block and a backward coding block corresponding to the block to be coded; determining a first weighting parameter corresponding to the forward coding block; determining a second weighting parameter based on an overall brightness and for a reference image comprising the forward coding block and determining a third weighting parameter based on the overall brightness and for the reference image comprising the backward coding block; determining, according to the first weighting parameter, a fourth weighting parameter corresponding to the backward coding block; determining, according to the first weighting parameter, the second weighting parameter, the third weighting parameter, and the fourth weighting parameter, an predicted actual weighting parameter for the block to be coded; and performing predictive coding on the blocks to be coded by using the predicted actual weighting parameter. By applying the interframe predictive coding method and device provided by the embodiments of the present invention, the accuracy of interframe predictive coding is improved.

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Inventors:
ZHU HONGBO (CN)
Application Number:
PCT/CN2017/096641
Publication Date:
March 08, 2018
Filing Date:
August 09, 2017
Export Citation:
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Assignee:
BEIJING QIYI CENTURY SCIENCE & TECHNOLOGY CO LTD (CN)
International Classes:
H04N19/176; H04N19/503
Foreign References:
CN106358041A2017-01-25
CN103430540A2013-12-04
CN102301716A2011-12-28
US20150208080A12015-07-23
US20070098074A12007-05-03
Other References:
See also references of EP 3509303A4
Attorney, Agent or Firm:
PATENTSINO IP FIRM (CN)
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