1) Db wavelet transform
Db小波变换
1.
According to the properties of noise in CT security inspection image,a method combining Db wavelet transform and median filtering is applied to cancel both Guass white noise and pulse noise,to get better visual results.
根据CT安检图像既含高斯白噪声又含脉冲噪声的特点,运用将Db小波变换与中值滤波相结合的综合去噪方法,以同时滤除高斯噪声和脉冲噪声,以获得更好的视觉效果。
2) db wavelet
db小波
1.
By using DB wavelet scaling functions as basis functions to approximate the unknown field functions, it is not necessary to construct the shape functions costly as done in FEM and conventional meshless methods.
利用DB小波尺度函数作为基函数近似未知的场函数,不必类似有限元法和传统的无网格法花很大代价去构造所谓的形函数。
2.
After image preprocessing db wavelet transform was introduced to analyze the image,finally the eigenvalues of image were extracted from the transformed warp and weft images to recognize defects.
其采用Labview软件并结合Matlab编程,首先对采集的针织物图像进行中值滤波和二值化处理,接着采用db小波分解图像,最后对分解后的经向和纬向纹理子图像分别提取特征值,由此检测和识别疵点。
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