org.area515.resinprinter.inkdetection.visual

Class CircleDetector

java.lang.Object

org.area515.resinprinter.inkdetection.visual.CircleDetector

All Implemented Interfaces:

ShapeDetector<Circle>

public class CircleDetector
extends java.lang.Object
implements ShapeDetector<Circle>

Constructor Summary

Constructors

Constructor and Description
CircleDetector(float angleSamplesPerRadius, int radiusMin, int radiusMax, int radiusInc)

Method Summary

Modifier and Type	Method and Description
Circle	buildShape(int x, int y, int scaleIndex, int votes)
int[]	getHoughSpaceSizeAndGenerateLUT(int imageWidth, int imageHeight) The parametric equation for a circle centered at (a,b) with radius r is: a = x - r*cos(theta) b = y - r*sin(theta) In order to speed calculations, we first construct a lookup table (lut) containing the rcos(theta) and rsin(theta) values, for theta varying from 0 to 2*PI with increments equal to: 1/pointsOfReference*radiusMax.
int	getMaximumScaleIndex()
int	getMaximumVotesPerScale(int scaleIndex)
int	getMinimumScaleIndex()
int	getSamplesPerScaleIndex(int scaleIndex)
int	getScaleCount()
int	getScaleIncrement()
int[]	getSignificantPointOfShape(int x, int y, int sample, int scale)

Methods inherited from class java.lang.Object

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

Constructor Detail

CircleDetector

public CircleDetector(float angleSamplesPerRadius,
                      int radiusMin,
                      int radiusMax,
                      int radiusInc)

Method Detail

getHoughSpaceSizeAndGenerateLUT

public int[] getHoughSpaceSizeAndGenerateLUT(int imageWidth,
                                             int imageHeight)

The parametric equation for a circle centered at (a,b) with radius r is: a = x - r*cos(theta) b = y - r*sin(theta) In order to speed calculations, we first construct a lookup table (lut) containing the rcos(theta) and rsin(theta) values, for theta varying from 0 to 2*PI with increments equal to: 1/pointsOfReference*radiusMax. Return value = Number of angles for each radius

Specified by:

getHoughSpaceSizeAndGenerateLUT in interface ShapeDetector<Circle>

getScaleCount

public int getScaleCount()

Specified by:

getScaleCount in interface ShapeDetector<Circle>

getMinimumScaleIndex

public int getMinimumScaleIndex()

Specified by:

getMinimumScaleIndex in interface ShapeDetector<Circle>

getMaximumScaleIndex

public int getMaximumScaleIndex()

Specified by:

getMaximumScaleIndex in interface ShapeDetector<Circle>

getScaleIncrement

public int getScaleIncrement()

Specified by:

getScaleIncrement in interface ShapeDetector<Circle>

getSamplesPerScaleIndex

public int getSamplesPerScaleIndex(int scaleIndex)

Specified by:

getSamplesPerScaleIndex in interface ShapeDetector<Circle>

getMaximumVotesPerScale

public int getMaximumVotesPerScale(int scaleIndex)

Specified by:

getMaximumVotesPerScale in interface ShapeDetector<Circle>

getSignificantPointOfShape

public int[] getSignificantPointOfShape(int x,
                                        int y,
                                        int sample,
                                        int scale)

Specified by:

getSignificantPointOfShape in interface ShapeDetector<Circle>

buildShape

public Circle buildShape(int x,
                         int y,
                         int scaleIndex,
                         int votes)

Specified by:

buildShape in interface ShapeDetector<Circle>