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- W2387383749 abstract "The emerging high efficiency video coding(HEVC)standard uses residual quadratic tree(RQT)to transform and quantize the predicted residuals after motion estimation(ME).Rate-distortion costs of all the nodes at different RQT depths are compared transversally to select the optimal one or we call it the optimal transform unit(TU).The coding efficiency is improved significantly by the new transform technology.However,huge computation complexity is introduced compared with previous standard.To solve the above problem,a rapid TU mode decision algorithm is proposed in this paper focusing on adaptive depth prediction.First of all,weights of temporal-spatial adjacent CTUs combined with characteristics of RQT depth distribution themselves are used to predict RQT depth of certain CTU/CUs.The RQT depths of rest CTU/CUs are predicted via temporal-spatial correlation between RQT maximum depths.As a result,unnecessary RQT depth can be skipped or terminated.According to simulation results,conclusions are obtained that the TU computation complexity can be reduced by about 50%under standard coding configuration,while maintaining almost the same RD performance as original standard.Our algorithm reduces TU computation complexity greatly as expected.Meanwhile,the proposed algorithm effectively addresses the low efficiency problem under complex sequences met by other related algorithms." @default.
- W2387383749 created "2016-06-24" @default.
- W2387383749 creator A5039564453 @default.
- W2387383749 date "2014-01-01" @default.
- W2387383749 modified "2023-09-24" @default.
- W2387383749 title "Fast transform unit decision algorithm based on adaptive depth prediction" @default.
- W2387383749 hasPublicationYear "2014" @default.
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