Effective palette indexing for image compression using self-organization of Kohonen feature map

Author

Pei, Soo-Chang ; Chuang, Yu-Ting ; Chuang, Wei-Hong

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei

Volume

15

Issue

9

fYear

2006

Firstpage

2493

Lastpage

2498

Abstract

The process of limited-color image compression usually involves color quantization followed by palette re-indexing. Palette re-indexing could improve the compression of color-indexed images, but it is still complicated and consumes extra time. Making use of the topology-preserving property of self-organizing Kohonen feature map, we can generate a fairly good color index table to achieve both high image quality and high compression, without re-indexing. Promising experiment results will be presented

Keywords

data compression; image coding; image colour analysis; image resolution; self-organising feature maps; color index table; color quantization; color-indexed images; effective palette indexing; image quality; limited-color image compression; self-organizing Kohonen feature map; topology-preserving property; Color; Cost function; Councils; Extremities; Heuristic algorithms; Image coding; Image quality; Indexing; Quantization; Sorting; Color palette; color quantization; index image; self-organizing Kohonen feature map (SOFM);

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/TIP.2006.877417

Filename

1673432