Package boofcv.alg.feature.detect.chess

Class ChessboardCorner

java.lang.Object

georegression.struct.GeoTuple<T>

georegression.struct.GeoTuple_F64<T>

georegression.struct.GeoTuple2D_F64<Point2D_F64>

georegression.struct.point.Point2D_F64

boofcv.alg.feature.detect.chess.ChessboardCorner

All Implemented Interfaces:

Serializable

public class ChessboardCorner
extends Point2D_F64

Corner in a chessboard. Orientation is estimated unqiuely up to 180 degrees.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
double	contrast	The white region subtracted the black region at the chessboard corner.
double	edgeIntensity	Value of smallest Eigen value in edge detector
double	edgeRatio	Ratio of smallest and largest Eigen values in edge detector
boolean	first	Internal book keeping.
double	intensity	Used to judge how good of a fit the corner is to an ideal chessboard corner.
int	level1	The first and second level in the pyramid the corner was seen at.
int	level2	The first and second level in the pyramid the corner was seen at.
int	levelMax	Level with the maximum corner intensity
double	orientation	Radian from pi to -pi

Fields inherited from class georegression.struct.GeoTuple2D_F64

x, y

Constructor Summary

Constructors

Constructor	Description
ChessboardCorner()

Method Summary

Modifier and Type	Method	Description
void	reset()
void	setTo(double x, double y, double angle, double intensity)
void	setTo(ChessboardCorner c)

Methods inherited from class georegression.struct.point.Point2D_F64

copy, createNewInstance, setTo, toString

Methods inherited from class georegression.struct.GeoTuple2D_F64

_setTo, distance, distance, distance2, distance2, equals, getDimension, getIdx, getX, getY, hashCode, isIdentical, isIdentical, isIdentical, isNaN, norm, normSq, plus, plusIP, print, scale, setIdx, setTo, setX, setY, times, timesIP, toString, zero

Methods inherited from class georegression.struct.GeoTuple_F64

isInfinite

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

orientation

public double orientation

Radian from pi to -pi

intensity

public double intensity

Used to judge how good of a fit the corner is to an ideal chessboard corner. Higher the value the more x-corner like. Computed on a per-feature basis and should be more accurate than the x-corner detector intensity.

contrast

public double contrast

The white region subtracted the black region at the chessboard corner. Can be used later on for locally adaptive thresholds

edgeIntensity

public double edgeIntensity

Value of smallest Eigen value in edge detector

edgeRatio

public double edgeRatio

Ratio of smallest and largest Eigen values in edge detector

level1

public int level1

The first and second level in the pyramid the corner was seen at. level1 <= level2

level2

public int level2

The first and second level in the pyramid the corner was seen at. level1 <= level2

levelMax

public int levelMax

Level with the maximum corner intensity

first

public boolean first

Internal book keeping. if true then this indicates that this is the first corner seen in this level

Constructor Details

ChessboardCorner

public ChessboardCorner()

Method Details

reset

public void reset()

setTo

public void setTo(ChessboardCorner c)

setTo

public void setTo(double x,
 double y,
 double angle,
 double intensity)