Heuristically selects spatial/temporal smoothing and robust-TV weights based
on voxel spacing, repetition time, and a noise estimate.
Usage
recommend_params(
vec,
mask = NULL,
tr = NULL,
target_fwhm_mm = 5,
sigma_mppca = NULL
)
Arguments
- vec
4D fMRI array or `NeuroVec`.
- mask
Optional 3D logical/0-1 mask.
- tr
Optional repetition time (seconds). Defaults to 2.
- target_fwhm_mm
Target spatial FWHM in millimeters.
- sigma_mppca
Optional pre-computed noise sigma. When `NULL`, noise is
estimated with `estimate_sigma_rician`.
Value
A list with fields `lambda_s`, `lambda_t`, `sigma_sp`, `sigma_t`, `sigma_r`.