Intra Frame Rate Control for Versatile Video Coding with Quadratic Rate-Distortion Modelling
Yi Chen, Sam Kwong, Mingliang Zhou, Shiqi Wang, Guopu Zhu, Yi Wang
Abstract
With numerous coding tools adopted in the forthcoming Versatile Video Coding (VVC) standard, much less work has been dedicated to study the corresponding Rate-Distortion (R-D) characteristics. This paper proposes a new quadratic R-D model for Versatile Video Coding. In particular, based on the proposed model, a new R-λ relationship is derived and used for frame level rate control. The rate control algorithm is implemented on VTM 2.0 platform for intra coding scenarios. Compared to the default rate control algorithm in VTM 2.0, experimental results show that proposed rate control algorithm can achieve 0.77% BD-BR reduction with similar control accuracy.
Topics & Concepts
Coding (social sciences)Computer scienceRate distortionCoding tree unitQuadratic equationAlgorithmRate–distortion theoryRate–distortion optimizationIntra-frameMultiview Video CodingArtificial intelligenceData compressionMathematicsDecoding methodsStatisticsVideo trackingVideo processingGeometryVideo Coding and Compression TechnologiesAdvanced Data Compression TechniquesImage and Video Quality Assessment