dwiSqrtODF-methods.RdCompute a positive definite estimate of the Ensemble Average Propagator (EAP) and Orientation Density Function (ODF) using the approach of Cjeng et. al (2012).
# S4 method for dtiData
dwiSqrtODF(object,what="sqrtODF",order=4,forder=1,lambda=0,D0=1.4e-3)| 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. |
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).
Karsten Tabelow tabelow@wias-berlin.de
J\"org Polzehl polzehl@wias-berlin.de
J. Cheng, T. Jiang and R. Deriche. Nonnegative Definite EAP and ODF Estimation via a Unified Multi-Shell HARDI Reconstruction, MICCAI 2012.