Results 81 to 90 of about 779,839 (204)

Image–Shearlet Mutual Information and Shearlet Entropy

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this study, we define a new Shannon entropy function related to shearlets and present a new method for computing mutual information of an image and a shearlet, based on copulas. In fact, we construct a shearlet copula according to Rüschendorf’s method.
Mahdi Mowlavi, Omid Pourbahri Rahpeyma, Madjid Mirzavaziri, Smritijit Sen   +3 more
wiley   +1 more source

Fast Finite Shearlet Transform

, 2012
In recent years it has turned out that shearlets have the potential to retrieve directional information so that they became interesting for many applications. Moreover the continuous shearlet transform has the outstanding property to stem from a square integrable group representation.
Häuser, S., Steidl, G.
openaire   +2 more sources

Sparse directional image representations using the discrete shearlet transform

, 2008
In spite of their remarkable success in signal processing applications, it is now widely acknowledged that traditional wavelets are not very effective in dealing multidimensional signals containing distributed discontinuities such as edges.
Labate, Demetrio, Lim, Wang-Q, Easley, Glenn   +2 more
core   +1 more source

Total Variation based Multivariate Shearlet Shrinkage for Image Reconstruction [PDF]

, 2013
Shearlet as a new multidirectional and multiscale transform is optimally efficient in representing images containing edges. In this paper, a total variation based multivariate shearlet adaptive shrinkage is proposed for discontinuity-preserving image ...
Deng, Chengzhi, Hu, Min, Wang, Shengqian, Li, Yan, Tian, Wei, Hu, Saifeng   +5 more
core   +1 more source

A Secure and Robust Blockchain‐Based Medical Image Encryption Approach Using Lorenz Chaotic System

Journal of Sensors, Volume 2026, Issue 1, 2026.
Keeping medical images confidential while transmitting is crucial, especially in an open networking environment. One effective approach is blockchain‐based encryption, which provides strong security for sensitive healthcare data. To ensure the greatest levels of medical data integrity and authenticity, our proposed scheme employs a unique Lorenz ...
Fahima Hajjej, Saba Inam, Shamsa Kanwal, Ala Saleh Alluhaidan, Deepali   +4 more
wiley   +1 more source

Processing Medical Images by new several mathematics shearlet transform

, 2020
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.A new methodology is shown to perform medical image processing by the shearlet transform. The contours of the processed images are obtained and compared with those obtained
Zotin, S., Espinosa, N., Cadena, L., Kirillova, S., Cadena, F., Barkova, D.   +5 more
core  

Hyperspectral Imaging: The Intelligent Eye to Uncover the Password of Plant Science

Modern Agriculture, Volume 3, Issue 2, December 2025.
Hyperspectral imaging (HSI) has emerged as a powerful non‐destructive technique for characterisation of the plant phenotype and physiological traits. The ongoing development of cost‐effective hardware, coupled with standardised acquisition protocols and open‐access spectral libraries, is accelerating its integration with multi‐omics approaches to ...
Jingyan Song, Haifeng Liang, Bingjie Lu, Jing Guo, Yuan Gao, Xiao Hu, Manlin Yang, Xiaofan Li, Zhenyu Wang, Yongqi Chen, Yinyin Zhang, Shen Su, Zhangyun Gao, Shijie Li, Ping Chen, Jing Wang, Wanneng Yang, Hui Feng   +17 more
wiley   +1 more source

An EfficientNet integrated ResNet deep network and explainable AI for breast lesion classification from ultrasound images

CAAI Transactions on Intelligence Technology, Volume 10, Issue 3, Page 842-857, June 2025.
Abstract Breast cancer is one of the major causes of deaths in women. However, the early diagnosis is important for screening and control the mortality rate. Thus for the diagnosis of breast cancer at the early stage, a computer‐aided diagnosis system is highly required.
Kiran Jabeen, Muhammad Attique Khan, Ameer Hamza, Hussain Mobarak Albarakati, Shrooq Alsenan, Usman Tariq, Isaac Ofori   +6 more
wiley   +1 more source

Efficient design of a low redundant discrete shearlet transform

, 2009
Recently, there has been a huge interest in multiresolution representations that also perform a multidirectional analysis. The Shearlet transform provides both a multiresolution analysis (such as the wavelet transform), and at the same time an optimally ...
Goossens, Bart, Luong, Hiep, Hiep Luong, Aleksandra Pizurica, Aelterman, Jan, Pizurica, Aleksandra, Jan Aelterman, Wilfried Philips, Bart Goossens, Philips, Wilfried   +9 more
core   +1 more source

SAR Interferogram Filtering of Shearlet Domain Based on Interferometric Phase Statistics

Applied Sciences, 2017
This paper presents a new filtering approach for Synthetic Aperture Radar (SAR) interferometric phase noise reduction in the shearlet domain, depending on the coherent statistical characteristics.
Yonghong He, Jianjun Zhu, Haiqiang Fu, Qinghua Xie, Bing Xu, Bing Zhang   +5 more
doaj   +1 more source