A HYBRID VIDEO COMPRESSION BASED ON ZEROTREE WAVELET STRUCTURE
İlker Kılıç, Reyat Yılmaz · 2009
A video compression algorithm comparable to the standart techniques at low bit rates is presented in this paper. The overlapping block motion compensation (OBMC) is combined with discrete wavelet transform which followed by Lloyd–Max quantization and zerotree wavelet (ZTW) structure. The novel feature of this coding scheme is the com-bination of hierarchical finite state vector quantization (HFSVQ) with the ZTW to encode the quantized wavelet co-efficients. It is seen that the proposed video encoder (ZTW–HFSVQ) performs better than the MPEG-4 and Zerotree Entropy Coding (ZTE). Key words: video compression, wavelet transform, vector quantization