Title :
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
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);
Journal_Title :
Image Processing, IEEE Transactions on
DOI :
10.1109/TIP.2006.877417
