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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …