摘要
提出了一种提升小波变换与分形相结合的图像压缩方案.充分利用小波变换后系数能量的分布特性,对提升小波变换后的低频部分采用改进的分形图像压缩编码,其余部分采用集合分裂嵌入块(SPECK)编码算法.试验结果表明,该方法在提高了压缩效率的同时,获得了较高的恢复图像质量.
An image compression project based on the combination of lifting wavelel transform and fractal was proposed. Making the best of the coefficients＇ distribution, the algorithm was consisted of improved fractal coding in low frequency of lifting wavelet transform coefficients and SPECK coding in other parts. enhancing compression
出处
《光子学报》
EI
CAS
CSCD
北大核心
2006年第11期1784-1787,共4页
Acta Photonica Sinica
