Improvements of the ZeroTree-based Video Coding by using Scalable Three-dimension Spatio-temporal Orientation Tree Data Structure

Abstract: Based on the analysis to the information distribution and the parent-child correlation of three-dimensional (3D) wavelet coefficients, a scalable 3D spatio-temporal orientation tree (3D-SOT) is proposed to improve the performance of embedded zerotree wavelet video codec. Simulations on the 3D-SPIHT coding system show that the proposed scalable 3D-SOT can significantly improve the rate-distortion performance of embedded zerotree video codec, particularly at low bit rates