UTILSLIB::MaxwellMovementComp Class Reference

Maxwell movement compensation using SSS. More...

#include <maxwell_movement_comp.h>

Static Public Member Functions
static Eigen::MatrixXd	apply (const Eigen::MatrixXd &matData, const FIFFLIB::FiffInfo &fiffInfo, const QList< HeadPosEntry > &headPos, double dSFreq, const MaxwellMoveCompParams &params=MaxwellMoveCompParams())
	Apply movement compensation via SSS.
static QList< HeadPosEntry >	readHeadPos (const QString &sPath)
	Read head positions from a file.
static bool	writeHeadPos (const QString &sPath, const QList< HeadPosEntry > &headPos)
	Write head positions to a file.

Detailed Description

Maxwell movement compensation using SSS.

Usage:

QList<HeadPosEntry> headPos = ...; // from cHPI fitting
MaxwellMoveCompParams params;
Eigen::MatrixXd compensated = MaxwellMovementComp::apply(
    matData, fiffInfo, headPos, params);

Definition at line 89 of file maxwell_movement_comp.h.

Member Function Documentation

apply()

MatrixXd MaxwellMovementComp::apply ( const Eigen::MatrixXd & matData, const FIFFLIB::FiffInfo & fiffInfo, const QList< HeadPosEntry > & headPos, double dSFreq, const MaxwellMoveCompParams & params = MaxwellMoveCompParams() )

static

Apply movement compensation via SSS.

For each time segment (defined by headPos entries), the data is:

1. Projected into SSS multipole space using the actual head position.
2. Reconstructed at the reference head position.

Parameters

[in]	matData	Full sensor data (n_channels × n_samples).
[in]	fiffInfo	Measurement info (channel positions, etc.).
[in]	headPos	Head positions over time (from cHPI).
[in]	dSFreq	Sampling frequency (Hz).
[in]	params	Compensation parameters.

Returns

Movement-compensated data (n_channels × n_samples).

Definition at line 87 of file maxwell_movement_comp.cpp.

readHeadPos()

QList< HeadPosEntry > MaxwellMovementComp::readHeadPos ( const QString & sPath )

static

Read head positions from a file.

File format: whitespace-separated columns per line: time q1 q2 q3 tx ty tz gof

Parameters

[in]

sPath

Path to head position file.

Returns

List of head position entries.

Definition at line 176 of file maxwell_movement_comp.cpp.

writeHeadPos()

bool MaxwellMovementComp::writeHeadPos ( const QString & sPath, const QList< HeadPosEntry > & headPos )

static

Write head positions to a file.

Parameters

[in]	sPath	Output file path.
[in]	headPos	Head positions to write.

Returns

true if successful.

Definition at line 226 of file maxwell_movement_comp.cpp.

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

• src/libraries/dsp/maxwell_movement_comp.h
• src/libraries/dsp/maxwell_movement_comp.cpp