search for: rician

Displaying 3 results from an estimated 3 matches for "rician".

Did you mean: rican
2003 Apr 14
2
A statistical problem.Anybody can help me?
...work. I wish to find its approximated(using Central Limit Theorem) statistical characteristics in close-form.Mean and variance are enough. Does anybody have any ideas or references which can solve this problem? (below is my previous thoughts and now it is tested not work because RVs appear to be Rician distributed) Mean of Z is easy to get. However its variance is troublesome. I think it can be calculated by Var=alpha*C*alpha', where alpha=[a(0) a(1) ... a(N-1)],C is covariance matrix of vector [R(0),|R(1)|,...,|R(N-1)|]. Besides the diagonal and first row and first column, the other e...
2008 May 19
0
New package dti
...methods. Version 0.5-2 contains functions for smoothing DW data in the context of the Diffusion Tensor Model and for visualization of Diffusion Tensor Data and anisotropy maps derived thereof. The tensor estimation can be done using a linearized model, or using a non-linear model. A correction for Rician bias can be included. - -- Karsten Tabelow, Dr. WIAS Berlin Mohrenstrasse 39, 10117 Berlin, Germany email: tabelow at wias-berlin.de phone: +49-30-20372 564 fax : +49-30-2044975 url : http://www.wias-berlin.de/people/tabelow/ url : http://www.wias-berlin.de/project-areas/stat/a3 Member of Ma...
2008 May 19
0
New package dti
...methods. Version 0.5-2 contains functions for smoothing DW data in the context of the Diffusion Tensor Model and for visualization of Diffusion Tensor Data and anisotropy maps derived thereof. The tensor estimation can be done using a linearized model, or using a non-linear model. A correction for Rician bias can be included. - -- Karsten Tabelow, Dr. WIAS Berlin Mohrenstrasse 39, 10117 Berlin, Germany email: tabelow at wias-berlin.de phone: +49-30-20372 564 fax : +49-30-2044975 url : http://www.wias-berlin.de/people/tabelow/ url : http://www.wias-berlin.de/project-areas/stat/a3 Member of Ma...