Aimed at the need of CATV network bi-directional transform, designed a kind of bi-directional amplifier with succinct circuit, cheap cost.
针对有线电视网双向改造的需要，设计了一种电路简洁、性能优良、成本低廉的双向放大器。
The paper presents a method of motion curve frequency domain filtering in Omni-directional M-mode echocardiography images based on Discrete Fourier Transform (DFT).
介绍一种基于离散傅里叶变换(DFT)的全方向M型超声心动图运动曲线频域滤波技术。
The redundant contourlet transform implemented by undecimated pyramidal decomposition and directional filter bank is proposed.
构造了由非抽样塔式分解和方向滤波器组实现的冗余轮廓波变换。
The spatial spectra of net rift for image processing have been mathematically analysed by means of 2d Fourier transform. Its directional property has been found.
本文利用二维付里叶变换对图象中网络构造的频谱作了数学分析，并指出了它的方向特点。
The spatial spectra of net rift for image processing have been mathematically analysed by means of 2d Fourier transform. Its directional property has been found.
本文利用二维付里叶变换对图象中网络构造的频谱作了数学分析，并指出了它的方向特点。
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