摘要
小波变换具有很好的时域和频域特性,已广泛的应用于信号处理等领域。近几年提升算法是在小波理论基础上发展起来的一种构造和实现小波变换的新方法,也是最新图像压缩标准JPEG2000的核心变换算法。根据介绍提升小波变换算法的原理,分析其特点,对JPEG2000中采Le Gall5/3和Daubechies9/7两种小波的实现算法进行分析。
Wavelet transform has the good characteristic of time domain and frequency domain,have been widely used in areas such as signal processing.Lifting scheme based on wavelet transform is on wavelet theory in recent years developed a new method for structure wavelet and realization wavelet,and used as the core transforming technology in JPEG2000,a newest image compression standard.According to introduce the principle of Lifting scheme based on wavelet transform,analyze its characteristics.Analysis of the JPEG2000 algorithm used in Le Gall 5/3 and Daubechies9/7 two wavelet transform.
出处
《自动化与仪器仪表》
2016年第5期179-180,共2页
Automation & Instrumentation
