Title :
An enhanced initialization method for codebook generation
Author :
Kai-Cheng Hu ; Chun-Hao Chen ; Chun-Wei Tsai ; Ming-Chao Chiang
Author_Institution :
Dept. of Comput. Sci. & Eng., Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan
Abstract :
Generalized Lloyd algorithm (GLA) is one of the most well-known image compression algorithms for tGLAhe codebook generation problem of vector quantization. However, it is usually extremely sensitive to the initial solution. Thus, this paper presents an enhanced method that leverages the strength of two methods to create a better initial solution for the codebook generation problem. The simulation results show that the proposed method can provide a quality that is significantly better than that GLA alone can provide.
Keywords :
data compression; image coding; GLA; codebook generation problem; enhanced initialization method; generalized Lloyd algorithm; image compression algorithms; vector quantization; Computer science; Data preprocessing; Euclidean distance; Quantization (signal); Simulation; Sorting; Training; Vector quantization; codebook generation problem; generalized Lloyd algorithm;
Conference_Titel :
Consumer Electronics - Taiwan (ICCE-TW), 2015 IEEE International Conference on
Conference_Location :
Taipei
DOI :
10.1109/ICCE-TW.2015.7217048