Interframe hierarchical vector quantization

Author

Nasrabadi, Nasser M. ; Lin, Shihkuan E. ; Feng, Yushu

Author_Institution

Dept. of Electr. Eng., Worcester Polytech. Inst., MA, USA

fYear

1989

Firstpage

1739

Abstract

An interframe coding scheme for the transmission of image sequences at bit rates below 0.2 bits per pixel is presented. The proposed scheme is called an interframe hierarchical (quadtree) vector quantizer. A regular decomposition quadtree method is used to segment the interframe differential signal into homogeneous regions of different block size. Small blocks representing high-contrast moving boundaries known as the impulsive component of the difference signal are vector-quantized. Large blocks typically representing smooth regions of the image are encoded by the local sample mean of the region. Experimental results are presented, confirming that the system can encode image sequence scenes at bit rates below 0.2 bit per pixel per frame. A comparison of the interframe hierarchical vector quantization system and an interframe mean reconstructed quadtree method is presented

Keywords

data compression; encoding; picture processing; block size; coding; decomposition quadtree method; high-contrast moving boundaries; image coding; image sequence transmission; impulsive component; interframe differential signal; interframe hierarchical vector quantization; interframe mean reconstructed quadtree method; Bit rate; Computer vision; Image coding; Image segmentation; Image sequences; Image storage; Layout; Pixel; Signal design; Vector quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on

Conference_Location

Glasgow

ISSN

1520-6149

Type

conf

DOI

10.1109/ICASSP.1989.266785

Filename

266785