#include <bmdl_mesh.h>

Static Public Member Functions
static bool	next_trace_point (unsigned int &i, unsigned int &j, int &dir, const unsigned int *&p, unsigned int value, unsigned int ni, unsigned int nj, vcl_ptrdiff_t istep, vcl_ptrdiff_t jstep)
	find the next trace point and direction.
static bool	trace_boundary (vcl_vector< vgl_point_2d< double > > &pts, unsigned int value, const vil_image_view< unsigned int > &labels, vil_image_view< bool > &visited, unsigned int i, unsigned int j)
	trace a single boundary starting and location (i,j).
static vcl_vector< vgl_polygon < double > >	trace_boundaries (const vil_image_view< unsigned int > &labels, bool drop_clipped=true)
	trace the boundaries of the building labels into polygons.
static unsigned int	link_boundary_edges (const vil_image_view< unsigned int > &labels, const vcl_vector< vgl_polygon< double > > &polygons, vcl_vector< bmdl_edge > &edges, vcl_vector< bmdl_region > &regions)
	extract shared boundary edges from the polygon boundaries.
static bool	is_clipped (const vcl_vector< vgl_point_2d< double > > &poly, unsigned ni, unsigned nj)
	test if a boundary is clipped by the image of size ni by nj.
static void	simplify_polygon (vcl_vector< vgl_point_2d< double > > &polygon, double tol)
	simplify a polygon by fitting lines.
static void	simplify_boundaries (vcl_vector< vgl_polygon< double > > &boundaries)
	simplify the boundaries by fitting lines.
static void	simplify_edge (vcl_vector< vgl_point_2d< double > > &pts, double tol)
	simplify an edge by fitting lines.
static void	simplify_edges (vcl_vector< bmdl_edge > &edges)
	simplify the linked edges by fitting lines.
static void	roof_subtract_hole (const imesh_vertex_array< 3 > &verts, vcl_vector< unsigned int > &face, const vcl_vector< unsigned int > &hole)
	Subtract a hole from an existing face in a mesh.
static void	mesh_lidar (const vcl_vector< vgl_polygon< double > > &boundaries, const vil_image_view< unsigned int > &labels, const vil_image_view< double > &heights, const vil_image_view< double > &ground, imesh_mesh &mesh)
	construct a mesh out of data and labels.
static void	mesh_lidar (const vcl_vector< bmdl_edge > &edges, const vcl_vector< bmdl_region > &regions, unsigned int num_joints, const vil_image_view< unsigned int > &labels, const vil_image_view< double > &heights, const vil_image_view< double > &ground, imesh_mesh &mesh)
	construct a mesh out of data and labels using linked edges.

Detailed Description

Definition at line 36 of file bmdl_mesh.h.

Member Function Documentation

bool bmdl_mesh::is_clipped	(	const vcl_vector< vgl_point_2d< double > > &	poly,
		unsigned	ni,
		unsigned	nj
	)		`[static]`

test if a boundary is clipped by the image of size ni by nj.

Definition at line 149 of file bmdl_mesh.cxx.

unsigned int bmdl_mesh::link_boundary_edges	(	const vil_image_view< unsigned int > &	labels,
		const vcl_vector< vgl_polygon< double > > &	polygons,
		vcl_vector< bmdl_edge > &	edges,
		vcl_vector< bmdl_region > &	regions
	)		`[static]`

extract shared boundary edges from the polygon boundaries.

Returns:: the number of joints linking the edges

Definition at line 190 of file bmdl_mesh.cxx.

void bmdl_mesh::mesh_lidar	(	const vcl_vector< vgl_polygon< double > > &	boundaries,
		const vil_image_view< unsigned int > &	labels,
		const vil_image_view< double > &	heights,
		const vil_image_view< double > &	ground,
		imesh_mesh &	mesh
	)		`[static]`

construct a mesh out of data and labels.

The coordinate system is flipped over the x-axis to make it right handed i.e. (x,y) -> (x,-y)

Definition at line 506 of file bmdl_mesh.cxx.

void bmdl_mesh::mesh_lidar	(	const vcl_vector< bmdl_edge > &	edges,
		const vcl_vector< bmdl_region > &	regions,
		unsigned int	num_joints,
		const vil_image_view< unsigned int > &	labels,
		const vil_image_view< double > &	heights,
		const vil_image_view< double > &	ground,
		imesh_mesh &	mesh
	)		`[static]`

construct a mesh out of data and labels using linked edges.

The coordinate system is flipped over the x-axis to make it right handed i.e. (x,y) -> (x,-y)

Definition at line 602 of file bmdl_mesh.cxx.

bool bmdl_mesh::next_trace_point	(	unsigned int &	i,
		unsigned int &	j,
		int &	dir,
		const unsigned int *&	p,
		unsigned int	value,
		unsigned int	ni,
		unsigned int	nj,
		vcl_ptrdiff_t	istep,
		vcl_ptrdiff_t	jstep
	)		`[static]`

find the next trace point and direction.

Definition at line 18 of file bmdl_mesh.cxx.

void bmdl_mesh::roof_subtract_hole	(	const imesh_vertex_array< 3 > &	verts,
		vcl_vector< unsigned int > &	face,
		const vcl_vector< unsigned int > &	hole
	)		`[static]`

Subtract a hole from an existing face in a mesh.

Definition at line 907 of file bmdl_mesh.cxx.

void bmdl_mesh::simplify_boundaries ( vcl_vector< vgl_polygon< double > > & boundaries ) [static]

simplify the boundaries by fitting lines.

Definition at line 397 of file bmdl_mesh.cxx.

void bmdl_mesh::simplify_edge	(	vcl_vector< vgl_point_2d< double > > &	pts,
		double	tol
	)		`[static]`

simplify an edge by fitting lines.

tol is the tolerance for line fitting

Definition at line 422 of file bmdl_mesh.cxx.

void bmdl_mesh::simplify_edges ( vcl_vector< bmdl_edge > & edges ) [static]

simplify the linked edges by fitting lines.

Definition at line 481 of file bmdl_mesh.cxx.

void bmdl_mesh::simplify_polygon	(	vcl_vector< vgl_point_2d< double > > &	pts,
		double	tol
	)		`[static]`

simplify a polygon by fitting lines.

tol is the tolerance for line fitting

Definition at line 347 of file bmdl_mesh.cxx.

vcl_vector< vgl_polygon< double > > bmdl_mesh::trace_boundaries	(	const vil_image_view< unsigned int > &	labels,
		bool	drop_clipped = `true`
	)		`[static]`

trace the boundaries of the building labels into polygons.

If dropped_clipped is true then buildings clipped by the image boundaries are not traced

Definition at line 109 of file bmdl_mesh.cxx.

bool bmdl_mesh::trace_boundary	(	vcl_vector< vgl_point_2d< double > > &	pts,
		unsigned int	value,
		const vil_image_view< unsigned int > &	labels,
		vil_image_view< bool > &	visited,
		unsigned int	i,
		unsigned int	j
	)		`[static]`

trace a single boundary starting and location (i,j).

Definition at line 70 of file bmdl_mesh.cxx.

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

contrib/brl/bseg/bmdl/bmdl_mesh.h
contrib/brl/bseg/bmdl/bmdl_mesh.cxx

Static Public Member Functions

Detailed Description

Member Function Documentation