boofcv.alg.fiducial.calib.chess

Class ChessboardPolygonHelper<T extends boofcv.struct.image.ImageGray<T>>

java.lang.Object

boofcv.alg.fiducial.calib.chess.ChessboardPolygonHelper<T>

All Implemented Interfaces:

boofcv.alg.shapes.polygon.PolygonHelper

public class ChessboardPolygonHelper<T extends boofcv.struct.image.ImageGray<T>>
extends java.lang.Object
implements boofcv.alg.shapes.polygon.PolygonHelper

Helper which expands polygons prior to optimization. This is done to counter act the erosion step which shrunk the polygon

Constructor Summary

Constructors

Constructor and Description
ChessboardPolygonHelper()

Method Summary

Modifier and Type	Method and Description
void	configureBeforePolyline(boofcv.abst.shapes.polyline.PointsToPolyline contourToPolyline, boolean touchesBorder)
boolean	filterContour(java.util.List<georegression.struct.point.Point2D_I32> contour, boolean touchesBorder, boolean distorted)
boolean	filterPixelPolygon(georegression.struct.shapes.Polygon2D_F64 undistorted, georegression.struct.shapes.Polygon2D_F64 distorted, org.ddogleg.struct.GrowQueue_B touches, boolean touchesBorder) If not touching the border then the number of corners must be 4.
void	setImageShape(int width, int height)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ChessboardPolygonHelper

public ChessboardPolygonHelper()

Method Detail

setImageShape

public void setImageShape(int width,
                          int height)

Specified by:

setImageShape in interface boofcv.alg.shapes.polygon.PolygonHelper

filterContour

public boolean filterContour(java.util.List<georegression.struct.point.Point2D_I32> contour,
                             boolean touchesBorder,
                             boolean distorted)

Specified by:

filterContour in interface boofcv.alg.shapes.polygon.PolygonHelper

filterPixelPolygon

public boolean filterPixelPolygon(georegression.struct.shapes.Polygon2D_F64 undistorted,
                                  georegression.struct.shapes.Polygon2D_F64 distorted,
                                  org.ddogleg.struct.GrowQueue_B touches,
                                  boolean touchesBorder)

If not touching the border then the number of corners must be 4. If touching the border there must be at least 3 corners not touching the border. 7 corners at most. If there were 8 then all sides of a square would be touching the border. No more than 3 corners since that's the most number of non-border corners a square can have.

Specified by:

filterPixelPolygon in interface boofcv.alg.shapes.polygon.PolygonHelper

configureBeforePolyline

public void configureBeforePolyline(boofcv.abst.shapes.polyline.PointsToPolyline contourToPolyline,
                                    boolean touchesBorder)

Specified by:

configureBeforePolyline in interface boofcv.alg.shapes.polygon.PolygonHelper