摘要
讨论了傅里叶变换的缺点及小波变换的定义和性质,分析了加窗傅里叶变换和小波变换的特点,用4f空间滤波系统实现了二维小波变换.
The shortcoming of Fourier transform,and the feature and definition of wavelet transform are discussed in detail.Then the characteristic of Gabor and wavelet transform has been analyzed respectively.Finally,the transformation of 2-dimensional wavelet is implemented with the 4f spatial filtering system.
出处
《延安大学学报（自然科学版）》
2004年第3期26-29,共4页
Journal of Yan'an University：Natural Science Edition
