Coupling denoising algorithm based on discrete wavelet transform and modified median filter for medical image

B Chen, J Cui, Q Xu, T Shu, H Liu - Journal of Central South University, 2019 - Springer
In order to overcome the phenomenon of image blur and edge loss in the process of
collecting and transmitting medical image, a denoising method of medical image based on …

[PDF][PDF] 基于多元统计模型的分形小波自适应图像去噪

王智文, 李绍滋 - 2014 - cjc.ict.ac.cn
摘要为了克服分形小波去噪方法缺乏保护图像的边缘与细节的缺陷, 文中提出了一种基于多元
统计模型的分形小波自适应图像去噪算法. 通过建立一个参数可以灵活改善的多元统计模型来 …

Image denoising using a new implementation of the hyperanalytic wavelet transform

I Firoiu, C Nafornita, JM Boucher… - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
Shift invariance associated with good directional selectivity is important for the use of a
wavelet transform (WT) in many fields of image processing. Generally, complex wavelet …

Automatic SAR image enhancement based on nonsubsampled contourlet transform and memetic algorithm

Y Li, J Hu, Y Jia - Neurocomputing, 2014 - Elsevier
This paper presents an automatic enhancement method for SAR images based on the
nonsubsampled contourlet transform (NSCT) and the memetic algorithm (MA). Firstly, an …

Non‐subsampled contourlet transform based image Denoising in ultrasound thyroid images using adaptive binary morphological operations

J Jai Jaganath Babu, GF Sudha - IET Computer Vision, 2014 - Wiley Online Library
Speckle noise reduction is an important preprocessing stage for ultrasound medical image
processing. In this paper, a despeckling algorithm is proposed based on non‐subsampled …

A denoising algorithm via wiener filtering in the shearlet domain

P Xu, Q Miao, X Tang, J Zhang - Multimedia tools and applications, 2014 - Springer
An image denoising algorithm via wiener filtering in the shearlet domain is proposed in this
paper, it makes full use of the advantages of them. Shearlets have the features of …

Discrete shearlet transform based speckle noise removal in ultrasound images

LJ Ahmed - National Academy science letters, 2018 - Springer
Speckle noise removal plays an important role in ultrasound image diagnosis. Existing
speckle noise removal techniques have drawbacks such as lose of edge information, texture …

[PDF][PDF] Complex Wavelet Transform: application to denoising

I Adam - 2010 - dspace.upt.ro
PHD THESIS Complex Wavelet Transform: application to denoising Page 1 POLITEHNICA
UNIVERSITY OF TIMISOARA TELECOM BRETAGNE PHD THESIS to obtain the title of PhD of …

Contourlet domain image modeling by using the alpha-stable family of distributions

H Sadreazami, MO Ahmad… - 2014 IEEE International …, 2014 - ieeexplore.ieee.org
It is known that the contourlet coefficients of images have non-Gaussian property and heavy
tails. In view of this, an appropriate distribution to model the statistics of the contourlet …

A novel wide measuring range FBG displacement sensor with variable measurement precision based on helical bevel gear

S Jiang, J Wang, Q Sui, Y Cao - Optoelectronics Letters, 2015 - Springer
A novel fiber Bragg grating (FBG) displacement sensor is proposed, which can achieve wide
measuring range displacement detection with variable measurement precision due to its …