The discrete wavelet transform decomposes a discrete time signal into an approximation sequence and a detail sequence at each level of resolution.
离散子波变换将离散时间信号分解为一系列分辨率下的离散逼近和离散细节。紧支的正交规范子波与完全重建正交镜象滤波器组相对应。
The discrete wavelet transform (DWT) is used to analyse the spectra of pollution clouds in complicated environment and extract the small features.
应用离散子波变换进行污染云团红外光谱信号分析及特征提取。
The discrete wavelet transform(DWT) has a localized characteristic in time-frequency domain and a transform mechanism that accords with human visual system.
小波变换具有时频局部化特性和与人眼视觉特性相符的变换机制，而混沌序列具有确定、似随机、不可预测等特性。
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