Struct SdfParams 

pub struct SdfParams {
    pub sigma1: f64,
    pub sigma2: f64,
    pub lower_lim: f64,
    pub curv_constant: f64,
    pub use_curvature: bool,
    pub vessel_proximity: bool,
}

Parameters for SDF background field removal

There is no indent/closing radius: the reference QSMART_SDF.m builds an indent mask from sdf_sp_radius but never passes it to sdf_curvature.m, so the radius has no effect.

Fields

sigma1: f64

Sigma parameter for initial proximity map (default 10 for stage 1, 8 for stage 2)

sigma2: f64

Sigma parameter for vasculature proximity (default 0 for stage 1, 2 for stage 2)

lower_lim: f64

Lower limit for clamping proximity values (default 0.6)

curv_constant: f64

Scaling constant for curvature (default 500)

use_curvature: bool

Whether to use curvature-based edge refinement

vessel_proximity: bool

Whether to weight the proximity map by the vessel proximity (the Gaussian of vasc_only with width sigma2). sdf_curvature.m does this in stage 2 only (if stage==2, l. 17); stage 1 passes no vessels and skips it, though its sigma2 is 10. (Multiplying stage 1 by the Gaussian of all-ones, as QSM.rs did before, changes the proximity by an ulp and, on QSM-CI’s full-size cases, no smoothing width.)

Implementations

impl SdfParams

pub fn stage1() -> Self

Create parameters for QSMART Stage 1 MATLAB passes sigma1 for both sigma args in stage 1.

pub fn stage2() -> Self

Create parameters for QSMART Stage 2

Trait Implementations

impl Clone for SdfParams

fn clone(&self) -> SdfParams

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SdfParams

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SdfParams

fn default() -> Self

Returns the “default value” for a type.