contrib/mul/m23d/m23d_select_basis_views.h File Reference

Select a subset most suitable for use as a basis set. More...

#include <vnl/vnl_matrix.h>
#include <vcl_vector.h>

Go to the source code of this file.

Functions
vcl_vector< unsigned >	m23d_select_basis_views (const vnl_matrix< double > &P2D, unsigned n_modes, unsigned n_tries=1000)
	Select a subset most suitable for use as a basis set.
double	m23d_evaluate_basis (const vnl_matrix< double > &P2D, const vcl_vector< unsigned > &selected)
	Evaluate quality of a basis set.

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Detailed Description

Select a subset most suitable for use as a basis set.

Author:

Tim Cootes

Definition in file m23d_select_basis_views.h.

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Function Documentation

double m23d_evaluate_basis	(	const vnl_matrix< double > &	P2D,
		const vcl_vector< unsigned > &	selected
	)

Evaluate quality of a basis set.

Data matrix is 2ns x np (ns= number of samples, np = number of points) Each two rows gives the points in a single view. Form a basis from the pairs of rows defined by selected, and compute a measure of how independent the rows are - the smallest SV/largest SV

Data matrix is 2ns x np (ns= number of samples, np = number of points) Each two rows gives the points in a single view. Form a basis from the pairs of rows defined by selected, and compute a measure of how independent the rows are.

Definition at line 63 of file m23d_select_basis_views.cxx.

vcl_vector<unsigned> m23d_select_basis_views	(	const vnl_matrix< double > &	P2D,
		unsigned	n_modes,
		unsigned	n_tries
	)

Select a subset most suitable for use as a basis set.

Data matrix is 2ns x np (ns= number of samples, np = number of points) Each two rows gives the points in a single view. This returns a list of point indices for views which have most independent points, and are thus suitable for defining the basis. Randomly generates n_tries possible bases and selects the best. Note: First view (1st two rows) always included, as this often defines the default viewing angle.

Data matrix is 2ns x np (ns= number of samples, np = number of points) Each two rows gives the points in a single view. This returns a list of point indices for views which have most independent points, and are thus suitable for defining the basis.

Definition at line 18 of file m23d_select_basis_views.cxx.