Joint Decision Tree and Visual Feature Rate Control Optimization for VVC UHD Coding

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

5 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)219-234
Journal / PublicationIEEE Transactions on Image Processing
Volume32
Online published9 Dec 2022
Publication statusPublished - 2023

Abstract

In this paper, a joint decision tree and visual feature optimization rate control scheme for ultrahigh-definition (UHD) versatile video coding (VVC) is proposed. First, we design a new rate-distortion (R-D) model for UHD videos, and we establish a decision-tree-based multiclass classification scheme to improve the prediction accuracy of the R-D model by fully considering visual features. Second, based on the proposed R-D model, the globally optimal solution is obtained through convex optimization. Finally, we embed our algorithm into the latest VVC reference software, VTM 10.2. According to our experimental results, compared with the latest algorithm in VTM 10.2 and other state-of-the-art algorithms, our method can achieve significant bit rate reductions while maintaining a given peak signal-to-noise ratio (PSNR) or structural similarity index measure (SSIM).

Research Area(s)

  • Bit rate, decision tree, Encoding, Image coding, Indexes, linear, rate control, Standards, UHD, Video coding, visual feature, Visualization, VVC