1) wavefront transformation
波面变换
1.
The principle of this method is to utilize the wavefront transformation of binary optics from Gauss wave to plate wave and to reduce the angle of the diffraction.
利用二元光学器件的相位补偿作用进行波面变换，将高斯光束变换为平面光束，达到减小激光测距仪光束发散角的目的。
2) surfacelet transform
表面波变换
1.
Denoising method for underwater acoustic transient signals based on surfacelet transform;
基于表面波变换的水声瞬态信号降噪方法
2.
Among all the multiscale geometric analyzing tools available, both Contourlet transform and Surfacelet transform are constructed based on directional filter banks (DFB) and Laplacian Pyramid (LP).
而表面波变换则能够捕获不同方向的面奇异性,是一种由2维扩展至更高维的信号表示方法。
3.
The best approximation plane is determined by application of least-squares method and a new three-dimensional coordinates is established by the law vector of the plane as Z-axis,Scattered point will be coordinate transformation to new coordinate system;to conversion of scattered data process surfacelet transform.
应用最小二乘法确定散乱点的最佳逼近平面,以平面的法向量为Z轴建立新的三维坐标系,将散乱点向该坐标系进行坐标转换;对转换后的离散数据进行3D表面波变换(Surfacelet transform),依据统计学理论选取恰当阀值,据此对变换后的系数进行筛选,从而达到去除噪声的目的,使点云曲面收敛为一个稳定的三维数字模型。
3) 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
4) 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
5) Wavelet transformation
小波变换
1.
Compensated densilog HR processing based on wavelet transformation;
基于小波变换的密度测井高分辨率处理
2.
Recognition and removal of spikes in capillary electrophoresis using wavelet transformation;
基于小波变换识别去除毛细管电泳中的奇异峰
3.
Adaptive multiwell correlation based on wavelet transformation;
基于小波变换的自适应多井对比技术
6) Wavelet transforms
小波变换
1.
Application of wavelet transforms to ECG characteristic points recognition;
小波变换在心电图特征点识别中的应用
2.
Application of wavelet transforms in signal edge detection;
小波变换在信号边沿检测中的应用
3.
Combined digital filters of microcomputer protection based on wavelet transforms;
基于小波变换的微机保护组合数字滤波器
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