On video SNR scalability

Author

Kondi, Lisimachos P. ; Ishtiaq, Faisal ; Katsaggelos, Aggelos K.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL, USA

fYear

1998

fDate

4-7 Oct 1998

Firstpage

934

Abstract

We compare two SNR scalable video codecs. The first codec (CODEC1) is a three-layer single-pass quantization algorithm based on H.263 and extends the work presented by Robers (see Master´s Thesis Northwestern University, 1997) and Robers, Kondi and Katsaggelos (see Proc. SPIE Conf. on Visual Comm. and Image Proc., p.201-12, 1998). The second codec (CODEC2) implements three layer SNR scalability as described in Annex O of the H.263 standard by requantizing the DCT coefficients of the encoding error using finer quantizers than those used in the previous layer. By testing the two algorithms at various base and enhancement layer rates on both high and low motion sequences, the advantages and disadvantages of each codec are discussed and suitable applications are suggested for each one

Keywords

coding errors; data compression; discrete cosine transforms; image motion analysis; image sequences; noise; quantisation (signal); telecommunication equipment testing; transform coding; video codecs; DCT coefficients; H.263 standard; base layer rate; encoding error; enhancement layer rate; high motion sequence; low motion sequence; scalable video codecs; successive approximation; testing; three-layer single-pass quantization algorithm; video SNR scalability; Bit rate; Code standards; Discrete cosine transforms; Frequency; Quantization; Scalability; Streaming media; Testing; Video codecs; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on

Conference_Location

Chicago, IL

Print_ISBN

0-8186-8821-1

Type

conf

DOI

10.1109/ICIP.1998.999079

Filename

999079