1) wavelet transformation technique
小波变换技术
2) THz wavelet transform
THz小波变换频谱技术
1.
On the one hand,several important effects that are important for THz time domain spectroscopy are discussed: two-photon absorption,diffraction effect,and nonlinear effects(Kerr effect and Kerr-like effect) that affect the efficiently of the THz emitter;carrier-envelope phase offset of THz wave;and THz wavelet transform technique.
讨论了THz时域频谱技术的若干关键问题:THz发射晶体的双光子吸收、衍射效应和非线性效应(Kerr效应和类Kerr效应)等对THz产生效率的影响,THz辐射脉冲的载波包络相位差,THz小波变换频谱技术,以及利用光子晶体光纤飞秒激光作为激发源对THz时域频谱系统进行小型化和提高能量的方案。
4) wavelet transform profilometry
小波变换轮廓术
1.
Analyzing wavelet transform profilometry in the restraining CCD nonlinear characteristic
小波变换轮廓术抑制CCD非线性的分析
2.
By the wavelet transform profilometry,the height distribution of an object can be obtained by calculating the wavelet coefficient of the deformed fringe pattern at the "ridge" position even there are some frequency overlaps between the fundamental frequency and the higher-order spectra.
结果表明,只有在无周期内瞬时频谱混叠,即任意位置处物体瞬时高度变化满足h/xx=b<1/3条件时,和不存在抽样引起的周期间瞬时频谱混叠的抽样条件下(即一个周期内的抽样点数m≥4时),小波变换轮廓术才能正确恢复被测物体的三维面型。
5) Wavelet transform
小波变换
1.
Analysis and determination of noise sources for mine ventilation equipment base on wavelet transform;
基于小波变换的矿井通风设备噪音源分析与确定
2.
Damage identification of pipe based on two-stage wavelet transform method;
基于两步小波变换的管道损伤识别
3.
Edge detection of metal transfer image based on wavelet transform;
基于小波变换的熔滴过渡图像的边缘检测
6) wavelet
[英]['weɪvlət] [美]['wevlət]
小波变换
1.
Improvement on Predicting Precision of Oil Content in Instant Noodles with Near-infrared Spectroscopy Treated by Wavelet Transformation;
基于小波变换的方便面含油率近红外光谱检测技术
2.
The Denoising Algorithm of ECG Signals Based on Wavelet Transform;
基于小波变换的心电信号去噪算法
3.
A Comparative Study of Wavelet Used in DICOM Image Compression;
小波变换医学DICOM图像压缩的研究
补充资料：Radon变换和逆Radon变换
Radon变换和逆Radon变换
X线物理学术语。CT重建图像成像的主要理论依据之一。1917年澳大利亚数学家Radon首先论证了通过物体某一平面的投影重建物体该平面两维空间分布的公式。他的公式要求获得沿该平面所有可能的直线的全部投影(无限集合)。所获得的投影集称为Radon变换。由Radon变换进行重建图像的操作则称为逆Radon变换。Radon变换和逆Radon变换对CT成像的意义在于，它从数学原理上证实了通过物体某一断层层面“沿直线衰减分布的投影”重建该层面单位体积，即体素的线性衰减系数两维空间分布的可能性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条