dwiSqrtODF-methods {dti} | R Documentation |
Methods for positive definite EAP and ODF estimation in Package dti
Description
Compute a positive definite estimate of the Ensemble Average Propagator (EAP) and Orientation Density Function (ODF) using the approach of Cjeng et. al (2012).
Usage
## S4 method for signature 'dtiData'
dwiSqrtODF(object,what="sqrtODF",order=4,forder=1,lambda=0,D0=1.4e-3)
Arguments
object |
Object of class |
what |
Character, currently only "sqrtODF" is possible |
order |
Even integer, Order of spherical harmonics approximation. |
forder |
Integer, Order of radial approximation. |
lambda |
Non-negative, Regularization parameter. |
D0 |
Numeric vector, grid of diffusivity parameters, typically about 1e-3. |
Methods
signature(object = "ANY")
Returns a warning.
signature(object = "dtiData")
-
Compute a positive definite estimate of the Ensemble Average Propagator (EAP) and Orientation Density Function (ODF) using the approach of Cjeng et. al (2012).
Author(s)
Karsten Tabelow tabelow@wias-berlin.de
J\"org Polzehl polzehl@wias-berlin.de
References
J. Cheng, T. Jiang and R. Deriche. Nonnegative Definite EAP and ODF Estimation via a Unified Multi-Shell HARDI Reconstruction, MICCAI 2012.
See Also
dtiData
,
readDWIdata
,
dtiData
,
dwiQball