Wavelet Video Coding Combining Pyramidal Lattice Vector Quantization with Wyner-Ziv Coding

The paper presents a new video coding scheme combining pyramidal lattice vector quantization (PLVQ) with distributed video coding (DVC). Our scheme firstly applies lattice A₂ with side information to quantify the lowest coefficients in the discrete wavelet transform (DWT); and utilizes D₄ PLVQ to deal with the rest of wavelet coefficients. DVC respectively treats nonzero lattice vectors and zero lattice vectors after D₄ quantization. LVQ can extract the intra-frame dependences of wavelet coefficients; DVC can exact inter-frame dependences at the decoder. So, though intra-frame structure is used in our scheme, it has better performance than intra-frame coding