Results 1 to 10 of about 411,514 (294)

Kernel Estimation Using Total Variation Guided GAN for Image Super-Resolution [PDF]

open access: yesSensors, 2023
Various super-resolution (SR) kernels in the degradation model deteriorate the performance of the SR algorithms, showing unpleasant artifacts in the output images. Hence, SR kernel estimation has been studied to improve the SR performance in several ways
Jongeun Park, Hansol Kim, Moon Gi Kang
doaj   +2 more sources

Contingent kernel density estimation. [PDF]

open access: yesPLoS ONE, 2012
Kernel density estimation is a widely used method for estimating a distribution based on a sample of points drawn from that distribution. Generally, in practice some form of error contaminates the sample of observed points.
Scott Fortmann-Roe   +2 more
doaj   +6 more sources

Kernel density estimation via diffusion [PDF]

open access: yesAnnals of Statistics, 2010
We present a new adaptive kernel density estimator based on linear diffusion processes. The proposed estimator builds on existing ideas for adaptive smoothing by incorporating information from a pilot density estimate.
Dirk Kroese
exaly   +4 more sources

Multi-Frame Blind Super-Resolution Based on Joint Motion Estimation and Blur Kernel Estimation

open access: yesApplied Sciences, 2022
Multi-frame super-resolution makes up for the deficiency of sensor hardware and significantly improves image resolution by using the information of inter-frame and intra-frame images.
Shanshan Liu   +2 more
doaj   +1 more source

PCA-kernel estimation [PDF]

open access: yesStatistics & Risk Modeling, 2012
Abstract Many statistical estimation techniques for high-dimensional or functional data are based on a preliminary dimension reduction step, which consists in projecting the sample X 1,...,X n onto the first D eigenvectors of the Principal Component Analysis ...
Biau, Gérard, Mas, André
openaire   +3 more sources

Multivariate kernel density estimation with a parametric support [PDF]

open access: yesOpuscula Mathematica, 2009
We consider kernel density estimation in the multivariate case, focusing on the use of some elements of parametric estimation. We present a two-step method, based on a modification of the EM algorithm and the generalized kernel density estimator, and ...
Jolanta Jarnicka
doaj   +1 more source

Curve fitting of the corporate recovery rates: the comparison of Beta distribution estimation and kernel density estimation. [PDF]

open access: yesPLoS ONE, 2013
Recovery rate is essential to the estimation of the portfolio's loss and economic capital. Neglecting the randomness of the distribution of recovery rate may underestimate the risk.
Rongda Chen, Ze Wang
doaj   +1 more source

Pixel-Level Kernel Estimation for Blind Super-Resolution

open access: yesIEEE Access, 2021
Throughout the past several years, deep learning-based models have achieved success in super-resolution (SR). The majority of these works assume that low-resolution (LR) images are ‘uniformly’ degraded from their corresponding high ...
Jaihyun Lew, Euiyeon Kim, Jae-Pil Heo
doaj   +1 more source

Robust kernel density estimation [PDF]

open access: yes2008 IEEE International Conference on Acoustics, Speech and Signal Processing, 2008
We propose a method for nonparametric density estimation that exhibits robustness to contamination of the training sample. This method achieves robustness by combining a traditional kernel density estimator (KDE) with ideas from classical $M$-estimation.
Kim, JooSeuk, Scott, Clayton D.
openaire   +2 more sources

Mars Image Super-Resolution Based on Generative Adversarial Network

open access: yesIEEE Access, 2021
High-resolution (HR) Mars images have great significance for studying the land-form features of Mars and analyzing the climate on Mars. Nowadays, the mainstream image super-resolution methods are based on deep learning or CNNs, which are better than ...
Cong Wang   +4 more
doaj   +1 more source

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