Results 151 to 160 of about 8,557 (189)

BM3D denoising based on minimum GCV score

2015 International Conference on Computers, Communications, and Systems (ICCCS), 2015
Block-matching and 3D filtering(BM3D) is an effective denoising approach introduced by Dabov et al. which utilizes 3D transform collaborative filtering on small similar patches extracted from the image corrupted by additive white Gaussian noise. However, when it comes to blind filtering, the denoising performance will worsen rapidly.
Shan, Shanshan, Li, Yuehua, Zhu, Shujin
openaire   +2 more sources

A Novel Gcv-Based Criterion for Parameter Selection In Image Deconvolution

2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018
A proper selection of regularization parameter is essential for regularization-based image deconvolution. The main contribution of this paper is to propose a new form of generalized cross validation (GCV) as a criterion for this optimal selection. Incorporating a nil-trace non-linear estimate, we develop this new GCV based on Stein's unbiased risk ...
Thierry Blu, Feng Xue, Xia Ai
exaly   +2 more sources

A novel GCV-based criterion for parametric PSF estimation

2014 12th International Conference on Signal Processing (ICSP), 2014
We propose a generalized cross validation (GCV) as a novel criterion for estimating a point spread function (PSF) from the degraded image only. The PSF is obtained by minimizing this new objective functional over a family of Wiener processings. Based on this estimated PSF, we then perform deconvolution using our recently developed SURE-LET algorithm ...
Feng Xue, Jiaqi Liu, Zhifeng Li, Gang Meng   +3 more
openaire   +1 more source

A GCV based method for nonlinear ill-posed problems

Computational Geosciences, 2000
The authors deal with the solution of the nonlinear ill-posed equation \(F(m)=b\), where \(F:\mathbb{R}^M \to\mathbb{R}^N\) is a differentiable operator with \(M >N\), and right-hand side \(b\) is noisy. Let \(\phi(\beta, m)=\|F(m)-b\|^2+ \beta \|W(m-m_{\text{ref}}) \|^2\) be the Tikhonov functional of the problem.
Haber, Eldad, Oldenburg, Douglas
openaire   +2 more sources

Novae in 2018: Official Announcement of GCVS Names

2018
GCVS names are announced for 14 galactic Novae discovered in 2018.
E. V. Kazarovets, N. N. Samus
openaire   +1 more source

A family of risk estimators as criteria for psf estimation: From sureto GCV

2017 IEEE International Conference on Image Processing (ICIP), 2017
Stein's unbiased risk estimate (SURE) has been proven as a valid criterion for PSF (point spread function) estimation [1], which is essential to blind image deconvolution. In this paper, we develop a family of risk estimators as the criteria for blur identification. We first provide a direct proof of the validity of SURE.
Feng Xue, Lian Xue, Jiaqi Liu
openaire   +1 more source

Stable expression of green fluorescent protein mediated by GCV in Giardia canis

Parasitology International, 2008
Giardia canis can be infected with a double-stranded RNA virus, that is giardiavirus (G. canis virus, GCV). In this study, green fluorescent protein (GFP) was stably expressed in G. canis mediated by GCV. The plasmid pNEO/GDH/MCS/GFP, containing the neomycin phosphotransferase (NEO) encoding region flanked by the 636 nt of 5'-terminus and the 2174 nt ...
Chengwu, Liu, Jianhua, Li, Xichen, Zhang, Quan, Liu, Hui, Liu, Pengtao, Gong, Guocai, Zhang, Longquan, Yao, Xinxin, Zhang   +8 more
openaire   +2 more sources

A Study on Wear Properties of GCV Material with DLC Coating

Applied Mechanics and Materials, 2013
Compacted vermicular (CV) graphitization cast iron is the name given to graphitization cast iron where the shape of the graphite looks like a vermicular. Castability and the thermal conductivity of CV graphitization cast iron is similar to those of Grey iron, while the strength of CV graphitization cast iron is similar to that of ductile iron. The thin
Ki Woo Nam, Soo Chul Lee
openaire   +1 more source

Influence of the Bystander Effect on HSV-tk / GCV Gene Therapy. A Review.

Current Gene Therapy, 2002
Despite the development of new therapeutic strategies, cancer remains incurable in most patients with advanced disease. A recent potential improvement in therapeutic strategies is the concept of suicide gene therapy. After transfection with a suicide gene, cells can convert a harmless prodrug into its toxic metabolite, resulting in selective ...
van Dillen, Ingrid J, Mulder, Nanno H, Vaalburg, Willem, de Vries, Erik F J, Hospers, Geke A P   +4 more
openaire   +3 more sources

Viral load and ganciclovir (GCV) concentration in cerebrospinal fluid of patients successfully treated with GCV or valGCV for human herpesvirus 6 encephalitis/myelitis following umbilical cord blood transplantation

Transplant Infectious Disease, 2016
AbstractWe describe successful treatment of 3 cases of human herpesvirus 6 (HHV‐6) encephalitis/myelitis following cord blood transplantation (CBT). Ganciclovir (GCV) (10 mg/kg/day) reduced HHV‐6 load to undetectable levels in cerebrospinal fluid (CSF). Early dose reduction in the presence of HHV‐6 detectable in CSF resulted in an increased HHV‐6 load.
D, Morita, K, Hirabayashi, Y, Katsuyama, H, Morokawa, M, Motobayashi, T, Kurata, T, Shigemura, M, Tanaka, Y, Inaba, K, Koike, Y, Nakazawa   +10 more
openaire   +2 more sources