熟悉线性相位FIR数字滤波器特性。
Familiar with linear phase FIR digital filter characteristics.
本文从理论上分析了小波滤波器特性，提出了一种适合弱小目标图像的快速滤波方法。
This dissertation makes a theoretical study of filter feature, then applies it into small image denoising, and present a fast denoising method suitable for small target images.
文章利用抽样定理，首次由频谱的混叠导出物理上可实现的第一类部分响应形成滤波器特性。
By using Sampling Theorem, the paper first deduce the characteristics of the first class partial response shaping filter that can be realized on the physical from the spectrum overlap.
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