计算机应用与软件2012，Vol.29Issue(2)：149-151,3.
改进的适合低码率的SPIHT图像编码算法
MODIFIED LOW BIT-RATE-FITTING IMAGE ENCODING ALGORITHM SPIHT
摘要
Abstract
Improvement is made aiming at the unsatisfied effect of wavelet transform encoding algorithm SPIHT in low bit-ratecircumstance. The SPECK algorithm is used in the improved algorithm for low frequency coefficient, and only when there is significant coefficient appearing in high frequency coefficient sector in current threshold value then the SPIHT algorithm commences the operation. Moreover, the SPIHT algorithm has been modified as well. Experiments indicate that the peak signal to noise ratio PSNR of the reconstructed image derived from modified algorithm outperforms that of standard SPIHT.关键词
小波变换/图像编码/SPIHT/SPECKKey words
Wavelet transform/Image encoding/SPIHT/SPECK分类
信息技术与安全科学引用本文复制引用
邱自华,廖军,严权锋..改进的适合低码率的SPIHT图像编码算法[J].计算机应用与软件,2012,29(2):149-151,3.基金项目
湖南省教育厅资助科研项目(08C388) （08C388）
湖南理工学院校级科研项目(2010Y32). （2010Y32）
