1) Dual—Tree Complex Wavelet Transform
双数复小波
2) dual-tree complex wavelet
双树复数小波
1.
Dual-Tree Complex Wavelet Based Denoising for Diffusion Tensor Estimation;
基于双树复数小波降噪的扩散张量估计
2.
Based on DTCWT(dual-tree complex wavelet transform),a ratio of high-pass band and low-pass band norms is defined as a measure of image focus.
该方法基于双树复数小波变换,定义高频带与低频带2-范数的比值作为图像清晰度的判定准则。
3) complex wavelet
复数小波
1.
With six separable frequency bands of positive direction and negative direction tansformed by complex wavelet,six different feature information of terrain can be extracted.
利用复数小波变换的六个可分的正负方向频带,提取地形六个不同方向的特征信息。
2.
In this paper,the complex wavelet which has better directional ability is used in image denoising and the recovered images have higher PSNR and look better.
针对基于张量积小波域W iener滤波方向性差,从而导致去噪后图像边缘信息保持欠佳的问题,对复数小波的方向性质进行了分析,采用基于具有强方向性的复数小波域的W iener滤波的方法去噪,去噪后图像峰值信噪比和视觉质量较二维张量积小波去噪都有明显改善。
3.
A new image enhancement method aimed at optimizing contrast of image features while minimizing image noise is proposed in this paper based on complex wavelet transform.
针对目前的多尺度增强方法一般很难实现抑制噪声和凸显细节间有效均衡的问题,提出一种基于复数小波变换增强图像方法,充分利用复数小波兼具平移不变性和方向选择性的优势,首先通过相邻两层小波系数的相关性来有效区分噪声和图像边缘,并根据各层小波系数的分布设置局部阈值抑制噪声;在此基础上,自适应地选取增强函数来增强较弱的细节并保护原图像中的清晰边缘不产生失真。
4) dual-tree complex wavelet transform
双树复数小波变换
1.
In order to de-noise and get edges of chip, a method based on dual-tree complex wavelet transform threshold is described in this paper.
为了提高切屑图像的去噪能力 ,提出了一种采用双树复数小波变换进行切屑图像去噪的方法 ,即在原信号 (噪声标准方差 )未知情况下 ,采用GCV准则选取去噪阈值 ,双树复数小波变换进行去噪。
2.
Then SAR image de-noising modal based on BSF and dual-tree complex wavelet transform (DT-CWT) was constructed and reduced.
在SAR图像斑点噪声服从瑞利分布的假设下,结合双树复数小波变换推导了基于二元收缩方程的SAR图像的简化去噪模型,然后利用局部方差估计和维纳滤波器获得噪声方差与带噪小波系数方差的估计值,并计算出合适阈值对SAR图像进行去噪。
3.
We use dual-tree complex wavelet transform to decompose and reconstruct an image.
采用双树复数小波变换对图像进行分解与重构,在BayesShrink阈值去噪的基础上,提出了基于小波系数层内和层间局域特性的自适应阈值去噪算法;构造出具有层内和层间局域特性的统计量和相应的映射,产生新的BayesShrink阈值。
5) 2D Dual-Tree Complex Wavelet Transform
二维双树复数小波变换
1.
Image Denoising based on 2D Dual-Tree Complex Wavelet Transform;
基于二维双树复数小波变换的图像去噪
6) 3D DT-CWT
三维双树复数小波变换
补充资料:波利树法门
【波利树法门】
(术语)涅槃经三十二引忉利天宫之波利质多树以喻菩萨出家受具足戒,乃至具足诸行得大般涅槃之功德也。
(术语)涅槃经三十二引忉利天宫之波利质多树以喻菩萨出家受具足戒,乃至具足诸行得大般涅槃之功德也。
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