#include <DHoughFind.h>

Inheritance diagram for DHoughFind:

Public Member Functions
	DHoughFind ()

	DHoughFind (double xmin, double xmax, double ymin, double ymax, unsigned int Nbinsx, unsigned int Nbinsy)

virtual	~DHoughFind ()

virtual const char *	className (void) const

double	signof (double a)

void	SetLimits (double xmin, double xmax, double ymin, double ymax, unsigned int Nbinsx, unsigned int Nbinsy)

void	ResetHist (void)

DVector2	GetMaxBinLocation (void)

double	GetMaxBinContent (void)

double	GetSigmaX (void)

double	GetSigmaY (void)

DVector2	Find (void)

DVector2	Find (const vector< DVector2 > &points)

void	Fill (double x, double sigmax, double y, double sigmay)

void	Add (const DHoughFind *hough)

void	AddPoint (const DVector2 &point)

void	AddPoint (const double &x, const double &y)

void	AddPoints (const vector< DVector2 > &points)

unsigned int	GetNPoints (void)

vector< DVector2 >	GetPoints (void)

void	ClearPoints (void)

void	PrintHist (void)

void	FindIndexes (const DVector2 &pos, int &ix, int &iy)

double	FindBeta (double xlo, double ylo, double widthx, double widthy, DVector2 &pos, DVector2 &step)

double	FindBeta (const DVector2 &a, const DVector2 &b, const DVector2 &c, const DVector2 &d)

TH2D *	MakeIntoRootHist (string hname)

Static Public Member Functions
static const char *	static_className (void)

static DVector2	GetMaxBinLocation (vector< const DHoughFind * > &houghs)

Protected Attributes
vector< DVector2 >	points

double	xmin

double	xmax

double	ymin

double	ymax

unsigned int	Nbinsx

unsigned int	Nbinsy

double	bin_widthx

double	bin_widthy

double	bin_size

bool	max_bin_valid

unsigned int	imax_binx

unsigned int	imax_biny

double	max_bin_content

double *	hist

DVector2	a0

DVector2	xdir

DVector2	ydir

DVector2	stepdir

DVector2	start

Detailed Description

Definition at line 22 of file DHoughFind.h.

Constructor & Destructor Documentation

DHoughFind::DHoughFind ( )

Definition at line 18 of file DHoughFind.cc.

References hist.

DHoughFind::DHoughFind	(	double	xmin,
		double	xmax,
		double	ymin,
		double	ymax,
		unsigned int	Nbinsx,
		unsigned int	Nbinsy
	)

Definition at line 27 of file DHoughFind.cc.

References hist.

DHoughFind::~DHoughFind ( )

virtual

Definition at line 36 of file DHoughFind.cc.

References hist.

Member Function Documentation

void DHoughFind::Add ( const DHoughFind * hough )

Definition at line 292 of file DHoughFind.cc.

References _DBG_, hist, hist, Nbinsx, Nbinsy, xmax, xmin, ymax, ymax, ymin, and ymin.

void DHoughFind::AddPoint ( const DVector2 & point )

Definition at line 321 of file DHoughFind.cc.

Referenced by DTrackCandidate_factory_FDCCathodes::LinkSegmentsHough().

void DHoughFind::AddPoint	(	const double &	x,
		const double &	y
	)

Definition at line 329 of file DHoughFind.cc.

void DHoughFind::AddPoints ( const vector< DVector2 > & points )

Definition at line 338 of file DHoughFind.cc.

virtual const char* DHoughFind::className ( void ) const

inlinevirtual

Definition at line 27 of file DHoughFind.h.

void DHoughFind::ClearPoints ( void )

Definition at line 346 of file DHoughFind.cc.

void DHoughFind::Fill	(	double	x,
		double	sigmax,
		double	y,
		double	sigmay
	)

Increment the histogram bins according to the given location and sigmas. This will increment each bin by calculating the product of 2 gaussians using the coordinates of the center of the bin. Only bins within 4 sigma in each dimension are incremented.

Note that the histogram is NOT reset prior to filling. This is to allow accumulation over multiple calls.

Definition at line 204 of file DHoughFind.cc.

References hist, xstream::base64::index(), and ymin.

DVector2 DHoughFind::Find ( void )

Definition at line 124 of file DHoughFind.cc.

Referenced by DTrackCandidate_factory_FDCCathodes::LinkSegmentsHough().

DVector2 DHoughFind::Find ( const vector< DVector2 > & points )

Loop over "points" transforming them into lines and filling the 2-D histogram.

Definition at line 132 of file DHoughFind.cc.

References hist, xstream::base64::index(), ymax, and ymin.

double DHoughFind::FindBeta	(	double	xlo,
		double	ylo,
		double	widthx,
		double	widthy,
		DVector2 &	pos,
		DVector2 &	step
	)

inline

Definition at line 96 of file DHoughFind.h.

double DHoughFind::FindBeta	(	const DVector2 &	a,
		const DVector2 &	b,
		const DVector2 &	c,
		const DVector2 &	d
	)

inline

Given the 2-D vectors a,b,c, and d find the scaler value "beta" such that

a + alpha*b = c + beta*d

It vectors b and d should be unit vectors. The value of alpha is not returned, but can be calculated via:

alpha = beta*(d.b) - b.(a-c)

If the vectors b and d are parallel, then the return value will be inf or whatever division by zero returns on the system.

Definition at line 147 of file DHoughFind.h.

void DHoughFind::FindIndexes	(	const DVector2 &	pos,
		int &	ix,
		int &	iy
	)

inline

Definition at line 87 of file DHoughFind.h.

References ymin.

double DHoughFind::GetMaxBinContent ( void )

Definition at line 100 of file DHoughFind.cc.

Referenced by DTrackCandidate_factory_FDCCathodes::LinkSegmentsHough().

DVector2 DHoughFind::GetMaxBinLocation ( void )

Definition at line 87 of file DHoughFind.cc.

References x, y, and ymin.

DVector2 DHoughFind::GetMaxBinLocation ( vector< const DHoughFind * > & houghs )

static

This routine is designed to be called statically via:

DHoughFind::GetMaxBinLocation(houghs);

It will find the location of the center of the bin with the maximum content based on the sum of the input DHough objects. It does this dynamically without maintaining a sum histogram.

WARNING: If you call this as a method of an existing object, (e.g. like this myhough->GetMacBinLocation(houghs); ) the object is NOT used unless it explicitly appears in the "houghs" list!

It is left to the caller to ensure the limits and number of bins for each DHough object are the same.

Definition at line 244 of file DHoughFind.cc.

References xstream::base64::index(), x, and y.

unsigned int DHoughFind::GetNPoints ( void )

inline

Definition at line 48 of file DHoughFind.h.

vector<DVector2> DHoughFind::GetPoints ( void )

inline

Definition at line 49 of file DHoughFind.h.

Referenced by DTrackCandidate_factory_FDCCathodes::LinkSegmentsHough().

double DHoughFind::GetSigmaX ( void )

Definition at line 108 of file DHoughFind.cc.

References sqrt().

double DHoughFind::GetSigmaY ( void )

Definition at line 116 of file DHoughFind.cc.

References sqrt().

TH2D * DHoughFind::MakeIntoRootHist ( string hname )

Make a ROOT TH2D histogram out of this contents of this DHoughFind object. Note that it is up to the caller to delete the returned TH2D object.

Definition at line 383 of file DHoughFind.cc.

References h, hist, ymax, and ymin.

void DHoughFind::PrintHist ( void )

Dump an ASCII representation of the normalized histogram to the screen. This will dump a table of Nbinsx x Nbinsy characters to the screen as a sort of cheap visual of the histgram. It is only intended for debugging.

Definition at line 354 of file DHoughFind.cc.

References c, hist, xstream::base64::index(), sprintf(), and ymin.

void DHoughFind::ResetHist ( void )

Definition at line 74 of file DHoughFind.cc.

References hist.

void DHoughFind::SetLimits	(	double	xmin,
		double	xmax,
		double	ymin,
		double	ymax,
		unsigned int	Nbinsx,
		unsigned int	Nbinsy
	)

Definition at line 44 of file DHoughFind.cc.

References hist, ymax, and ymin.

Referenced by DTrackCandidate_factory_FDCCathodes::LinkSegmentsHough().

double DHoughFind::signof ( double a )

inline

Definition at line 30 of file DHoughFind.h.

static const char* DHoughFind::static_className ( void )

inlinestatic

Definition at line 28 of file DHoughFind.h.

Member Data Documentation

DVector2 DHoughFind::a0

protected

Definition at line 71 of file DHoughFind.h.

double DHoughFind::bin_size

protected

Definition at line 64 of file DHoughFind.h.

double DHoughFind::bin_widthx

protected

Definition at line 64 of file DHoughFind.h.

double DHoughFind::bin_widthy

protected

Definition at line 64 of file DHoughFind.h.

double* DHoughFind::hist

protected

Definition at line 69 of file DHoughFind.h.

Referenced by Add().

unsigned int DHoughFind::imax_binx

protected

Definition at line 66 of file DHoughFind.h.

unsigned int DHoughFind::imax_biny

protected

Definition at line 66 of file DHoughFind.h.

double DHoughFind::max_bin_content

protected

Definition at line 67 of file DHoughFind.h.

bool DHoughFind::max_bin_valid

protected

Definition at line 65 of file DHoughFind.h.

unsigned int DHoughFind::Nbinsx

protected

Definition at line 63 of file DHoughFind.h.

Referenced by Add().

unsigned int DHoughFind::Nbinsy

protected

Definition at line 63 of file DHoughFind.h.

Referenced by Add().

vector<DVector2> DHoughFind::points

protected

Definition at line 60 of file DHoughFind.h.

DVector2 DHoughFind::start

protected

Definition at line 75 of file DHoughFind.h.

DVector2 DHoughFind::stepdir

protected

Definition at line 74 of file DHoughFind.h.

DVector2 DHoughFind::xdir

protected

Definition at line 72 of file DHoughFind.h.

double DHoughFind::xmax

protected

Definition at line 62 of file DHoughFind.h.

Referenced by Add().

double DHoughFind::xmin

protected

Definition at line 62 of file DHoughFind.h.

Referenced by Add().

DVector2 DHoughFind::ydir

protected

Definition at line 73 of file DHoughFind.h.

double DHoughFind::ymax

protected

Definition at line 62 of file DHoughFind.h.

Referenced by Add().

double DHoughFind::ymin

protected

Definition at line 62 of file DHoughFind.h.

Referenced by Add().

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

Public Member Functions

Static Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation