Laboratorio de Procesado de Imagen

(Image Processing Lab)
E.T.S.I. Telecomunicación
Campus Miguel Delibes s/n
Universidad de Valladolid
47011 Valladolid, Spain

Libstable: Fast, Parallel and High-Precision Computation of alpha-Stable Distributions in R, C/C++ and MATLAB.

α-stable distributions are a family of well-known probability distributions. However, the lack of closed analytical expressions hinders their application. Libstable consists of an R package, a C/C++ library and a MATLAB front-end that permits fully parallelized, fast and high precision evaluation of density, distribution and quantile functions , random variable generation and parameter estimation of α-stable distributions in their whole parameter space. The library can be easily integrated on third party developments.

Exact Noise Maps and g-Factor in GRAPPA using a k–space Analysis

This code allows to exactly characterize the noise noise in GRAPPA (GeneRalized Autocalibrating Partial Parallel Acquisition) acquisitions with non-uniform undersampling patterns by a noise propagation analysis that operates directly in k–space. We exploit the extensive symmetries and separability into independent blocks in the reconstruction steps to take into account the correlation between all the acquired k–space samples.

LPI at CASEIB 2016

[20 Jan 2017]

The LPI has taken part on the 34th Conference of the Spanish Society of Biomedical Engineering (CASEIB2016), held in Valencia the 23rd, 24th and 25th of November 2016. Two oral communications on the field of magnetic resonance processing were presented.