Results 31 to 40 of about 250,897 (267)
Global and Quadratic Convergence of Newton Hard-Thresholding Pursuit [PDF]
, 2020 Algorithms based on the hard thresholding principle have been well studied with sounding theoretical guarantees in the compressed sensing and more general sparsity-constrained optimization.
Qi, Hou-Duo +2 more
core +1 more source
Remote Sensing, 2018 Natural hazards include a wide range of high-impact phenomena that affect socioeconomic and natural systems. Landslides are a natural hazard whose destructive power has caused a significant number of victims and substantial damage around the world ...
Rocío N. Ramos-Bernal +4 more
doaj +1 more source
, 2013 Sparse reconstruction approaches using the re-weighted l1-penalty have been shown, both empirically and theoretically, to provide a significant improvement in recovering sparse signals in comparison to the l1-relaxation.
Aravkin, Aleksandr, Malioutov, Dmitry
core +1 more source
Radon needlet thresholding [PDF]
, 2012 We provide a new algorithm for the treatment of the noisy inversion of the Radon transform using an appropriate thresholding technique adapted to a well-chosen new localized basis. We establish minimax results and prove their optimality.
Kerkyacharian, Gerard +2 more
core +6 more sources
Remote Sensing, 2015 Accurate and up-to-date mapping and monitoring of rubber plantations is challenging. In this study, we presented a simple method for rapidly and accurately mapping rubber plantations in the Xishuangbanna region of southwest China using phenology-based ...
Hui Fan +3 more
doaj +1 more source
Entropy, 2022 There are various distributions of image histograms where regions form symmetrically or asymmetrically based on the frequency of the intensity levels inside the image.
Walaa Ali H. Jumiawi, Ali El-Zaart
doaj +1 more source
An Automatic Multilevel Image Thresholding Using Relative Entropy and Meta-Heuristic Algorithms
Entropy, 2013 Multilevel thresholding has been long considered as one of the most popular techniques for image segmentation. Multilevel thresholding outputs a gray scale image in which more details from the original picture can be kept, while binary thresholding can ...
Josue R. Cuevas, Yun-Chia Liang
doaj +1 more source
Examining Thresholding and Factors Impacting Snow Cover Detection Using Nighttime Images
Remote Sensing, 2023 Nighttime remote sensing data from the Visible Infrared Imaging Radiometer suite day/night band (VIIRS DNB) enable snow cover detection from full moonlight reflection.
Renato Stopic, Eduardo Dias
doaj +1 more source
Matrix completion by singular value thresholding: sharp bounds
, 2015 We consider the matrix completion problem where the aim is to esti-mate a large data matrix for which only a relatively small random subset of its entries is observed.
Klopp, Olga
core +2 more sources