Seismic interferometry, also known as Green's function retrieval by crosscorrelation, has a wide range of applications, ranging from surface-wave tomography using ambient noise, to …
In this paper, we propose a numerical method which can routinely improve the energy resolution down to 0.2–0.3 eV of electron energy-loss spectra acquired in a transmission …
C Preza, JA Conchello - JOSA A, 2004 - opg.optica.org
We derive an algorithm for maximum-likelihood image estimation on the basis of the expectation-maximization (EM) formalism by using a new approximate model for depth …
Z Kam, B Hanser, MGL Gustafsson… - Proceedings of the …, 2001 - National Acad Sciences
Light microscopy of thick biological samples, such as tissues, is often limited by aberrations caused by refractive index variations within the sample itself. This problem is particularly …
B Zhang, J Sun, F Sun, F Wang, B Zhu - Expert Systems with Applications, 2024 - Elsevier
The restoration technology of non-uniform blurred images is a challenging open topic. Most of the existing algorithms fail to effectively fuse multi-scale feature extraction with a self …
S Berisha, JG Nagy - Academic Press Library in Signal Processing, 2014 - Elsevier
Although image restoration methods based on spectral filtering techniques are very efficient, they can be applied only to problems with fairly simple spatially invariant blurring operators …
JG Nagy, DP O'Leary - Advanced Signal Processing …, 1997 - spiedigitallibrary.org
We describe how to efficiently apply a spatially-variant blurring operator using linear interpolation of measured point spread functions. Numerical experiments illustrate that …
Z Kam, JW Sedat, DA Agard, BM Hanser - US Patent 6,658,142, 2003 - Google Patents
Apparatus for computational adaptive imaging comprises the following: an image information acquirer, Which provides informa tion relating to the refractive characteristics in a …
In this paper, we present an algorithm for the restoration of images with an unknown, spatially-varying blur. Existing computational methods for image restoration require the …