A set of pixels in an Image. More...

#include <Footprint.h>

Inheritance diagram for lsst.afw.detection::Footprint:

Public Types
typedef boost::shared_ptr < Footprint >	Ptr

typedef boost::shared_ptr < const Footprint >	ConstPtr

typedef std::vector< Span::Ptr >	SpanList
	The Footprint's Span list. More...

Public Types inherited from lsst::daf::base::Citizen
enum	{ magicSentinel = 0xdeadbeef }

typedef unsigned long	memId
	Type of the block's ID. More...

typedef memId(*	memNewCallback )(const memId cid)
	A function used to register a callback. More...

typedef memId(*	memCallback )(const Citizen *ptr)

Public Member Functions
	Footprint (int nspan=0, geom::Box2I const &region=geom::Box2I())

	Footprint (afw::table::Schema const &peakSchema, int nspan=0, geom::Box2I const &region=geom::Box2I())

	Footprint (geom::Box2I const &bbox, geom::Box2I const &region=geom::Box2I())

	Footprint (geom::Point2I const &center, double const radius, geom::Box2I const &=geom::Box2I())

	Footprint (geom::ellipses::Ellipse const &ellipse, geom::Box2I const &region=geom::Box2I())

	Footprint (SpanList const &spans, geom::Box2I const &region=geom::Box2I())

	Footprint (Footprint const &other)

virtual	~Footprint ()

virtual bool	isHeavy () const

int	getId () const

SpanList &	getSpans ()

const SpanList &	getSpans () const

PeakCatalog &	getPeaks ()

const PeakCatalog &	getPeaks () const

boost::shared_ptr< PeakRecord >	addPeak (float fx, float fy, float value)
	Convenience function to add a peak (since that'd now be multiple lines without this function) More...

void	sortPeaks (afw::table::Key< float > const &key=afw::table::Key< float >())

void	setPeakSchema (afw::table::Schema const &peakSchema)
	Set the Schema used by the PeakCatalog (will throw if PeakCatalog is not empty). More...

int	getNpix () const

int	getArea () const

geom::Point2D	getCentroid () const

geom::ellipses::Quadrupole	getShape () const

const Span &	addSpan (const int y, const int x0, const int x1)

const Span &	addSpan (Span const &span)

const Span &	addSpan (Span const &span, int dx, int dy)

const Span &	addSpanInSeries (const int y, const int x0, const int x1)

void	shift (int dx, int dy)

void	shift (geom::ExtentI d)

geom::Box2I	getBBox () const
	Return the Footprint's bounding box. More...

geom::Box2I const &	getRegion () const
	Return the corners of the MaskedImage the footprints live in. More...

void	setRegion (geom::Box2I const &region)
	Set the corners of the MaskedImage wherein the footprints dwell. More...

void	clipTo (geom::Box2I const &bbox)

template<typename PixelT >
void	clipToNonzero (lsst::afw::image::Image< PixelT > const &img)

bool	contains (geom::Point2I const &pix) const

void	normalize ()

bool	isNormalized () const

template<typename PixelT >
void	insertIntoImage (typename lsst::afw::image::Image< PixelT > &idImage, boost::uint64_t const id, geom::Box2I const &region=geom::Box2I()) const

template<typename PixelT >
void	insertIntoImage (typename lsst::afw::image::Image< PixelT > &idImage, boost::uint64_t const id, bool const overwriteId, long const idMask, typename std::set< boost::uint64_t > *oldIds, geom::Box2I const &region=geom::Box2I()) const

Footprint &	operator= (Footprint &other)

template<typename MaskPixelT >
void	intersectMask (image::Mask< MaskPixelT > const &mask, MaskPixelT bitmask=~0x0)
	Intersect the Footprint with a Mask. More...

boost::shared_ptr< Footprint >	transform (image::Wcs const &source, image::Wcs const &target, geom::Box2I const &region, bool doClip=true) const
	Transform the footprint from one WCS to another. More...

boost::shared_ptr< Footprint >	findEdgePixels () const
	Find edge pixels on the footprint. More...

void	include (std::vector< boost::shared_ptr< Footprint >> const &children, bool ignoreSelf=false)
	Update the Footprint in-place to be the union of itself and all others provided. More...

bool	isPersistable () const
	Return true if this particular object can be persisted using afw::table::io. More...

Public Member Functions inherited from lsst::daf::base::Citizen
	Citizen (const std::type_info &)

	Citizen (Citizen const &)

	~Citizen ()

Citizen &	operator= (Citizen const &)

std::string	repr () const
	Return a string representation of a Citizen. More...

void	markPersistent (void)
	Mark a Citizen as persistent and not destroyed until process end. More...

memId	getId () const
	Return the Citizen's ID. More...

Public Member Functions inherited from lsst.afw.table.io::Persistable
void	writeFits (std::string const &fileName, std::string const &mode="w") const
	Write the object to a regular FITS file. More...

void	writeFits (fits::MemFileManager &manager, std::string const &mode="w") const
	Write the object to a FITS image in memory. More...

void	writeFits (fits::Fits &fitsfile) const
	Write the object to an already-open FITS object. More...

virtual	~Persistable ()

Protected Member Functions
virtual std::string	getPersistenceName () const
	Return the unique name used to persist this object and look up its factory. More...

virtual std::string	getPythonModule () const
	Return the fully-qualified Python module that should be imported to guarantee that its factory is registered. More...

virtual void	write (OutputArchiveHandle &handle) const
	Write the object to one or more catalogs. More...


void	readSpans (afw::table::BaseCatalog const &spanCat)
	Persistence implementation functions made available for derived classes. More...

void	readPeaks (afw::table::BaseCatalog const &peakCat)
	Persistence implementation functions made available for derived classes. More...

Protected Member Functions inherited from lsst.afw.table.io::Persistable
	Persistable ()

	Persistable (Persistable const &other)

void	operator= (Persistable const &other)

Private Attributes
int	_fid
	unique ID More...

int	_area
	number of pixels in this Footprint (not the area of the bbox) More...

SpanList	_spans
	the Spans contained in this Footprint More...

geom::Box2I	_bbox
	the Footprint's bounding box More...

PeakCatalog	_peaks
	the Peaks lying in this footprint More...

geom::Box2I	_region
	The corners of the MaskedImage the footprints live in. More...

bool	_normalized
	Are the spans sorted? More...

Static Private Attributes
static int	id

Friends
class	FootprintFactory

class	FootprintMerge

Additional Inherited Members
Static Public Member Functions inherited from lsst::daf::base::Citizen
static bool	hasBeenCorrupted ()
	Check all allocated blocks for corruption. More...

static memId	getNextMemId ()
	Return the memId of the next object to be allocated. More...

static int	init ()
	Called once when the memory system is being initialised. More...

static int	census (int, memId startingMemId=0)
	How many active Citizens are there? More...

static void	census (std::ostream &stream, memId startingMemId=0)
	Print a list of all active Citizens to stream, sorted by ID. More...

static const std::vector < const Citizen * > *	census ()
	Return a (newly allocated) std::vector of active Citizens sorted by ID. More...

static memId	setNewCallbackId (memId id)
	Call the NewCallback when block is allocated. More...

static memId	setDeleteCallbackId (memId id)
	Call the current DeleteCallback when block is deleted. More...

static memNewCallback	setNewCallback (memNewCallback func)
	Set the NewCallback function. More...

static memCallback	setDeleteCallback (memCallback func)
	Set the DeleteCallback function. More...

static memCallback	setCorruptionCallback (memCallback func)
	Set the CorruptionCallback function. More...

Static Public Member Functions inherited from lsst.afw.table.io::PersistableFacade< lsst::afw::detection::Footprint >
static boost::shared_ptr < lsst::afw::detection::Footprint >	readFits (fits::Fits &fitsfile)
	Read an object from an already open FITS object. More...

static boost::shared_ptr < lsst::afw::detection::Footprint >	readFits (std::string const &fileName, int hdu=0)
	Read an object from a regular FITS file. More...

static boost::shared_ptr < lsst::afw::detection::Footprint >	readFits (fits::MemFileManager &manager, int hdu=0)
	Read an object from a FITS file in memory. More...

Protected Types inherited from lsst.afw.table.io::Persistable
typedef io::OutputArchiveHandle	OutputArchiveHandle

Detailed Description

A set of pixels in an Image.

A Footprint is a set of pixels, usually but not necessarily contiguous. There are constructors to find Footprints above some threshold in an Image (see FootprintSet), or to create Footprints in the shape of various geometrical figures

Examples:: footprintFunctor.cc.

Definition at line 62 of file Footprint.h.

Member Typedef Documentation

typedef boost::shared_ptr<const Footprint> lsst.afw.detection::Footprint::ConstPtr

Definition at line 68 of file Footprint.h.

typedef boost::shared_ptr<Footprint> lsst.afw.detection::Footprint::Ptr

Definition at line 67 of file Footprint.h.

typedef std::vector<Span::Ptr> lsst.afw.detection::Footprint::SpanList

The Footprint's Span list.

Definition at line 71 of file Footprint.h.

Constructor & Destructor Documentation

lsst.afw.detection::Footprint::Footprint	(	int	nspan = `0`,
		geom::Box2I const &	region = `geom::Box2I()`
	)

explicit

Create a Footprint

Exceptions

lsst::pex::exceptions::InvalidParameterException in nspan is < 0

nspan: initial number of Spans in this Footprint region: Bounding box of MaskedImage footprint

lsst.afw.detection::Footprint::Footprint	(	afw::table::Schema const &	peakSchema,
		int	nspan = `0`,
		geom::Box2I const &	region = `geom::Box2I()`
	)

explicit

Create a rectangular Footprint

lsst.afw.detection::Footprint::Footprint	(	geom::Box2I const &	bbox,
		geom::Box2I const &	region = `geom::Box2I()`
	)

explicit

lsst.afw.detection::Footprint::Footprint	(	geom::Point2I const &	center,
		double const	radius,
		geom::Box2I const &	= `geom::Box2I()`
	)

lsst.afw.detection::Footprint::Footprint	(	geom::ellipses::Ellipse const &	ellipse,
		geom::Box2I const &	region = `geom::Box2I()`
	)

explicit

lsst.afw.detection::Footprint::Footprint	(	SpanList const &	spans,
		geom::Box2I const &	region = `geom::Box2I()`
	)

explicit

lsst.afw.detection::Footprint::Footprint ( Footprint const & other )

Construct a footprint from a list of spans. Resulting Footprint is not normalized.

virtual lsst.afw.detection::Footprint::~Footprint ( )

virtual

Member Function Documentation

boost::shared_ptr< PeakRecord > lsst.afw.detection::Footprint::addPeak	(	float	fx,
		float	fy,
		float	value
	)

Convenience function to add a peak (since that'd now be multiple lines without this function)

const Span& lsst.afw.detection::Footprint::addSpan	(	const int	y,
		const int	x0,
		const int	x1
	)

Add a Span to a footprint, returning a reference to the new Span.

const Span& lsst.afw.detection::Footprint::addSpan ( Span const & span )

Add a Span to a Footprint returning a reference to the new Span

const Span& lsst.afw.detection::Footprint::addSpan	(	Span const &	span,
		int	dx,
		int	dy
	)

Add a Span to a Footprint returning a reference to the new Span

const Span& lsst.afw.detection::Footprint::addSpanInSeries	(	const int	y,
		const int	x0,
		const int	x1
	)

Add a Span to a Footprint, where the Spans MUST be added in order (first in increasing y, then increasing x), and MUST NOT be overlapping. This method does NOT reset the _normalized boolean.

This method is useful when a Footprint is being constructed in such a way that Spans are guaranteed to be produced in order. In that case, it is not necessary to normalize() the Footprint after all the Spans have been added. This can save some computation.

void lsst.afw.detection::Footprint::clipTo ( geom::Box2I const & bbox )

template<typename PixelT >

void lsst.afw.detection::Footprint::clipToNonzero ( lsst::afw::image::Image< PixelT > const & img )

Clips the given Footprint to the region in the Image containing non-zero values. The clipping drops spans that are totally zero, and moves endpoints to non-zero; it does not split spans that have internal zeros.

bool lsst.afw.detection::Footprint::contains ( geom::Point2I const & pix ) const

Does this Footprint contain this pixel?

boost::shared_ptr< Footprint > lsst.afw.detection::Footprint::findEdgePixels ( ) const

Find edge pixels on the footprint.

Note that the resultant Footprint of edge pixels may not be contiguous.

int lsst.afw.detection::Footprint::getArea ( ) const

inline

Definition at line 153 of file Footprint.h.

153 { return _area; }

lsst.afw.detection::Footprint::_area

int _area

number of pixels in this Footprint (not the area of the bbox)

Definition: Footprint.h:346

geom::Box2I lsst.afw.detection::Footprint::getBBox ( ) const

inline

Return the Footprint's bounding box.

Definition at line 206 of file Footprint.h.

206 { return _bbox; }

lsst.afw.detection::Footprint::_bbox

geom::Box2I _bbox

the Footprint's bounding box

Definition: Footprint.h:349

geom::Point2D lsst.afw.detection::Footprint::getCentroid ( ) const

Return the Footprint's centroid

The centroid is calculated as the mean of the pixel centers

int lsst.afw.detection::Footprint::getId ( ) const

inline

Return the Footprint's unique ID.

Definition at line 109 of file Footprint.h.

109 { return _fid; }

lsst.afw.detection::Footprint::_fid

int _fid

unique ID

Definition: Footprint.h:345

int lsst.afw.detection::Footprint::getNpix ( ) const

inline

Return the number of pixels in this Footprint (the real number of pixels, not the area of the bbox).

Definition at line 152 of file Footprint.h.

152 { return _area; }

lsst.afw.detection::Footprint::_area

int _area

number of pixels in this Footprint (not the area of the bbox)

Definition: Footprint.h:346

PeakCatalog& lsst.afw.detection::Footprint::getPeaks ( )

inline

Return the Peaks contained in this Footprint

The peaks should be ordered by decreasing pixel intensity at the peak position (so the most negative peak appears last). Users that add new Peaks manually are responsible for maintaining this sorting.

Definition at line 123 of file Footprint.h.

123 { return _peaks; }

lsst.afw.detection::Footprint::_peaks

PeakCatalog _peaks

the Peaks lying in this footprint

Definition: Footprint.h:350

const PeakCatalog& lsst.afw.detection::Footprint::getPeaks ( ) const

inline

Definition at line 124 of file Footprint.h.

124 { return _peaks; }

lsst.afw.detection::Footprint::_peaks

PeakCatalog _peaks

the Peaks lying in this footprint

Definition: Footprint.h:350

virtual std::string lsst.afw.detection::Footprint::getPersistenceName ( ) const

protectedvirtual

Return the unique name used to persist this object and look up its factory.

Must be less than ArchiveIndexSchema::MAX_NAME_LENGTH characters.

Reimplemented from lsst.afw.table.io::Persistable.

Reimplemented in lsst.afw.detection::HeavyFootprint< ImagePixelT, MaskPixelT, VariancePixelT >.

virtual std::string lsst.afw.detection::Footprint::getPythonModule ( ) const

protectedvirtual

Return the fully-qualified Python module that should be imported to guarantee that its factory is registered.

Must be less than ArchiveIndexSchema::MAX_MODULE_LENGTH characters.

Will be ignored if empty.

Reimplemented from lsst.afw.table.io::Persistable.

geom::Box2I const& lsst.afw.detection::Footprint::getRegion ( ) const

inline

Return the corners of the MaskedImage the footprints live in.

Definition at line 209 of file Footprint.h.

209 { return _region; }

lsst.afw.detection::Footprint::_region

geom::Box2I _region

The corners of the MaskedImage the footprints live in.

Definition: Footprint.h:351

geom::ellipses::Quadrupole lsst.afw.detection::Footprint::getShape ( ) const

Return the Footprint's shape (interpreted as an ellipse)

The shape is determined by measuring the moments of the pixel centers about its centroid (cf. getCentroid)

SpanList& lsst.afw.detection::Footprint::getSpans ( )

inline

Return the Spans contained in this Footprint.

Definition at line 112 of file Footprint.h.

112 { return _spans; }

lsst.afw.detection::Footprint::_spans

SpanList _spans

the Spans contained in this Footprint

Definition: Footprint.h:348

const SpanList& lsst.afw.detection::Footprint::getSpans ( ) const

inline

Return the Spans contained in this Footprint.

Definition at line 115 of file Footprint.h.

115 { return _spans; }

lsst.afw.detection::Footprint::_spans

SpanList _spans

the Spans contained in this Footprint

Definition: Footprint.h:348

void lsst.afw.detection::Footprint::include	(	std::vector< boost::shared_ptr< Footprint >> const &	children,
		bool	ignoreSelf = `false`
	)

Update the Footprint in-place to be the union of itself and all others provided.

Only spans will be modified; peaks will be left unchanged. If ignoreSelf is true it will only be the union of all its children.

template<typename PixelT >

void lsst.afw.detection::Footprint::insertIntoImage	(	typename lsst::afw::image::Image< PixelT > &	idImage,
		boost::uint64_t const	id,
		geom::Box2I const &	region = `geom::Box2I()`
	)		const

Set the pixels in idImage that are in Footprint by adding the specified value to the Image.

idImage: Image to contain the footprint id: Add id to idImage for pixels in the Footprint region: Footprint's region (default: getRegion())

template<typename PixelT >

void lsst.afw.detection::Footprint::insertIntoImage	(	typename lsst::afw::image::Image< PixelT > &	idImage,
		boost::uint64_t const	id,
		bool const	overwriteId,
		long const	idMask,
		typename std::set< boost::uint64_t > *	oldIds,
		geom::Box2I const &	region = `geom::Box2I()`
	)		const

Set the pixels in idImage which are in Footprint by adding the specified value to the Image.

The list of ids found under the new Footprint are returned.

idImage: Image to contain the footprint id: Add id to idImage for pixels in the Footprint overwriteId: should id replace any value already in idImage? idMask: Don't overwrite ID bits in this mask oldIds: if non-NULL, set the IDs that were overwritten region: Footprint's region (default: getRegion())

template<typename MaskPixelT >

void lsst.afw.detection::Footprint::intersectMask	(	image::Mask< MaskPixelT > const &	mask,
		MaskPixelT	bitmask = `~0x0`
	)

Intersect the Footprint with a Mask.

The resulting Footprint contains only pixels for which (mask & bitMask) == 0; it may have disjoint pieces. Any part of the footprint that falls outside the bounds of the mask will be clipped.

virtual bool lsst.afw.detection::Footprint::isHeavy ( ) const

inlinevirtual

Is this a HeavyFootprint?

Reimplemented in lsst.afw.detection::HeavyFootprint< ImagePixelT, MaskPixelT, VariancePixelT >.

Definition at line 106 of file Footprint.h.

106 { return false; }

bool lsst.afw.detection::Footprint::isNormalized ( ) const

inline

Definition at line 234 of file Footprint.h.

234 {return _normalized;}

lsst.afw.detection::Footprint::_normalized

bool _normalized

Are the spans sorted?

Definition: Footprint.h:352

bool lsst.afw.detection::Footprint::isPersistable ( ) const

inlinevirtual

Return true if this particular object can be persisted using afw::table::io.

Reimplemented from lsst.afw.table.io::Persistable.

Definition at line 322 of file Footprint.h.

322 { return true; }

void lsst.afw.detection::Footprint::normalize ( )

Normalise a Footprint, sorting spans and setting the BBox

Footprint& lsst.afw.detection::Footprint::operator= ( Footprint & other )

Assignment operator. Will not change the id

void lsst.afw.detection::Footprint::readPeaks ( afw::table::BaseCatalog const & peakCat )

protected

Persistence implementation functions made available for derived classes.

void lsst.afw.detection::Footprint::readSpans ( afw::table::BaseCatalog const & spanCat )

protected

Persistence implementation functions made available for derived classes.

void lsst.afw.detection::Footprint::setPeakSchema ( afw::table::Schema const & peakSchema )

inline

Set the Schema used by the PeakCatalog (will throw if PeakCatalog is not empty).

Definition at line 137 of file Footprint.h.

                                                           {
         if (!getPeaks().empty()) {
             throw LSST_EXCEPT(
                 pex::exceptions::LogicError,
                 "Cannot change the PeakCatalog schema unless it is empty"
             );
         }
         // this syntax doesn't work in Python, which is why this method has to exist
         getPeaks() = PeakCatalog(peakSchema);
     }

void lsst.afw.detection::Footprint::setRegion ( geom::Box2I const & region )

inline

Set the corners of the MaskedImage wherein the footprints dwell.

Definition at line 212 of file Footprint.h.

212 { _region = region; }

lsst.afw.detection::Footprint::_region

geom::Box2I _region

The corners of the MaskedImage the footprints live in.

Definition: Footprint.h:351

void lsst.afw.detection::Footprint::shift	(	int	dx,
		int	dy
	)

Shift a Footprint by (dx, dy)

dx: How much to move footprint in column direction dy: How much to move in row direction

void lsst.afw.detection::Footprint::shift ( geom::ExtentI d )

inline

Definition at line 203 of file Footprint.h.

203 {shift(d.getX(), d.getY());}

lsst.afw.detection::Footprint::shift

void shift(int dx, int dy)

void lsst.afw.detection::Footprint::sortPeaks ( afw::table::Key< float > const & key = afw::table::Key< float >() )

Sort Peaks from most positive value to most negative.

If the key passed is invalid (the default) PeakTable::getPeakValueKey() will be used.

boost::shared_ptr< Footprint > lsst.afw.detection::Footprint::transform	(	image::Wcs const &	source,
		image::Wcs const &	target,
		geom::Box2I const &	region,
		bool	doClip = `true`
	)		const

Transform the footprint from one WCS to another.

Parameters

[in]	source	Wcs that defines the coordinate system of the input footprint.
[in]	target	Wcs that defines that desired coordinate system of the returned footprint.
[in]	region	Used to set the "region" box of the returned footprint; note that this is NOT the same as the footprint's bounding box.
[in]	doClip	If true, clip the new footprint to the region bbox before returning it.

virtual void lsst.afw.detection::Footprint::write ( OutputArchiveHandle & handle ) const

protectedvirtual

Write the object to one or more catalogs.

The handle object passed to this function provides an interface for adding new catalogs and adding nested objects to the same archive (while checking for duplicates). See OutputArchiveHandle for more information.

Reimplemented from lsst.afw.table.io::Persistable.

Reimplemented in lsst.afw.detection::HeavyFootprint< ImagePixelT, MaskPixelT, VariancePixelT >.

Friends And Related Function Documentation

friend class FootprintFactory

friend

Definition at line 338 of file Footprint.h.

friend class FootprintMerge

friend

Definition at line 342 of file Footprint.h.

Member Data Documentation

int lsst.afw.detection::Footprint::_area

private

number of pixels in this Footprint (not the area of the bbox)

Definition at line 346 of file Footprint.h.

geom::Box2I lsst.afw.detection::Footprint::_bbox

private

the Footprint's bounding box

Definition at line 349 of file Footprint.h.

int lsst.afw.detection::Footprint::_fid

mutableprivate

unique ID

Definition at line 345 of file Footprint.h.

bool lsst.afw.detection::Footprint::_normalized

private

Are the spans sorted?

Definition at line 352 of file Footprint.h.

PeakCatalog lsst.afw.detection::Footprint::_peaks

private

the Peaks lying in this footprint

Definition at line 350 of file Footprint.h.

geom::Box2I lsst.afw.detection::Footprint::_region

mutableprivate

The corners of the MaskedImage the footprints live in.

Definition at line 351 of file Footprint.h.

SpanList lsst.afw.detection::Footprint::_spans

private

the Spans contained in this Footprint

Definition at line 348 of file Footprint.h.

int lsst.afw.detection::Footprint::id

staticprivate

Definition at line 344 of file Footprint.h.

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

/home/lsstsw/stack/Linux64/afw/11.0.rc2+4/include/lsst/afw/detection/Footprint.h

Public Types

Public Member Functions

Protected Member Functions

Private Attributes

Static Private Attributes

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation