Robust 3-D subband video coder

Author

Ashourian, Mohsen ; Yusof, Zulkefli Muhammed ; Salleh, Shaikh Hussain Shaikh ; Bakar, Syed Abd Rahman Abu

Author_Institution

Fac. of Electr. Eng., Univ. Technol. Malaysia, Johor, Malaysia

Volume

2

fYear

2001

fDate

2001

Firstpage

549

Abstract

We explain our results on development of a robust video coder, The coder consists of 3D subband filtering in the first stage, an optimized scalar quantization (SQ) of lowest tempo-spatial frequency subband, and a pyramid vector quantization (PVQ) for high frequency subbands. To increase robustness to noise productive enumeration is used for PVQ. Also with phase scrambling the distribution of the lowest temporal-spatial band is changed to Gaussian which results in a better SQ coding gain for this band. The output indices of SQ were sent using a folded binary code to improve noise robustness. Results show that at high bit-error rate (5×10^-3) the coder peak signal to noise ratio drops a maximum 5.3 dB

Keywords

Gaussian distribution; binary codes; error statistics; high-pass filters; low-pass filters; vector quantisation; video coding; 3D subband filtering; Gaussian distribution; PVQ; SQ; bit error rate; coding gain; filter banks; folded binary code; optimized scalar quantization; peak signal to noise ratio; phase scrambling; productive enumeration; pyramid vector quantization; robust video coder; subband coding; Band pass filters; Binary codes; Encoding; Filter bank; Filtering; Frequency; Low pass filters; Noise robustness; Vector quantization; Video sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and its Applications, Sixth International, Symposium on. 2001

Conference_Location

Kuala Lumpur

Print_ISBN

0-7803-6703-0

Type

conf

DOI

10.1109/ISSPA.2001.950202

Filename

950202