FSLIB::FsAtlasLookup Class Reference

RAS-point → anatomical-region resolver backed by a FreeSurfer volumetric parcellation. More...

#include <fs_atlas_lookup.h>

Public Member Functions
	FsAtlasLookup ()
bool	load (const QString &sParcellationPath)
	Load a FreeSurfer MGH/MGZ volume parcellation.
QString	labelAtRas (const Eigen::Vector3f &ras) const
	Look up the anatomical label at a RAS coordinate.
QStringList	labelsForPositions (const QVector< Eigen::Vector3f > &positions) const
	Look up labels for multiple RAS positions.
bool	isLoaded () const
	Check whether a parcellation volume has been loaded.

Detailed Description

RAS-point → anatomical-region resolver backed by a FreeSurfer volumetric parcellation.

Owns the parcellation voxel grid, its inverse RAS-to-voxel affine, and a label-id → region-name map seeded from FreeSurferColorLUT. Designed for cheap per-point queries: a labelAtRas() call is an affine transform, three bound checks and an int → QString hash lookup.

Definition at line 68 of file fs_atlas_lookup.h.

Constructor & Destructor Documentation

FsAtlasLookup()

FsAtlasLookup::FsAtlasLookup

(

)

Constructs an empty atlas lookup.

Definition at line 48 of file fs_atlas_lookup.cpp.

Member Function Documentation

isLoaded()

bool FsAtlasLookup::isLoaded

(

)

const

Check whether a parcellation volume has been loaded.

Returns

true if loaded.

Definition at line 300 of file fs_atlas_lookup.cpp.

labelAtRas()

QString FsAtlasLookup::labelAtRas

(

const Eigen::Vector3f &

ras

)

const

Look up the anatomical label at a RAS coordinate.

Parameters

[in]

ras

3D position in RAS space (in mm).

Returns

Label string, or "Unknown" if out of bounds or unlabeled.

Definition at line 267 of file fs_atlas_lookup.cpp.

labelsForPositions()

QStringList FsAtlasLookup::labelsForPositions

(

const QVector< Eigen::Vector3f > &

positions

)

const

Look up labels for multiple RAS positions.

Parameters

[in]

positions

List of 3D RAS positions.

Returns

List of label strings (one per position).

Definition at line 289 of file fs_atlas_lookup.cpp.

load()

bool FsAtlasLookup::load

(

const QString &

sParcellationPath

)

Load a FreeSurfer MGH/MGZ volume parcellation.

Parameters

[in]

sParcellationPath

Path to the volume file (e.g. aparc+aseg.mgz).

Returns

true if loaded successfully.

Definition at line 56 of file fs_atlas_lookup.cpp.

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The documentation for this class was generated from the following files:

• src/libraries/fs/fs_atlas_lookup.h
• src/libraries/fs/fs_atlas_lookup.cpp