Catalano.Imaging.Tools

Class ShapeDescriptors

java.lang.Object

Catalano.Imaging.Tools.ShapeDescriptors

public final class ShapeDescriptors
extends java.lang.Object

Shape Descriptors.

Method Summary

Modifier and Type	Method and Description
static int	Area(FastBitmap fastBitmap) Area.
static double	AreaEquivalentDiameter(int area) Area equivalent diameter.
double	Circularity(int area, int perimeter) Circularity.
double	Compactness(int area, double feretDiameter) Compactness.
static int	EulerNumber(FastBitmap fastBitmap) Euler number.
static double	FeretDiameter(java.util.List<IntPoint> contour) Feret Diameter.
static java.util.List<IntPoint>	FeretPoints(java.util.List<IntPoint> contour) Feret Points
static double	Irregularity(double thinnessRatio)
static double	MaximumErrorCircularity(double mcc, double mic) Maximum error circularity.
static double	MaximumInscribedCircle(FastBitmap fastBitmap) Maximum inscribed circle.
static double	MinimumCircumscribedCircle(IntPoint starPoint, java.util.List<IntPoint> contour) Minimum circumscribed circle.
static double	PerimeterEquivalentDiameter(int area) Perimeter Equivalent Diameter.
static double	Roughness(int width, int height) Roughness.
static double	Roundness(int area, double feretDiameter) Roundness.
static double	Shape(int area, int perimeter) Shape.
static IntPoint	StarPoint(FastBitmap fastBitmap) Star Point.
static double	ThinnessRatio(int area, int perimeter) Thinness Ratio.
static java.util.List<IntPoint>	UltimateErodedPoints(FastBitmap fastBitmap) Ultimate Eroded Points.

Methods inherited from class java.lang.Object

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

Method Detail

Area

public static int Area(FastBitmap fastBitmap)

Area. Total of pixels white. Equation: Sum(Image).

Parameters:

fastBitmap - Image to be processed.

Returns:

Area.

AreaEquivalentDiameter

public static double AreaEquivalentDiameter(int area)

Area equivalent diameter. Equation: sqrt((4 / Pi) * Area)

Parameters:

area - Area.

Returns:

Area equivalent diameter.

Circularity

public double Circularity(int area,
                          int perimeter)

Circularity. Equation: 4 * Pi * Area / (Perimeter ^ 2)

Parameters:

area - Area.

perimeter - Perimeter.

Returns:

Circularity.

Compactness

public double Compactness(int area,
                          double feretDiameter)

Compactness. Equation: AreaEquivalentDiameter / feretDiameter

Parameters:

area - Area

feretDiameter - Feret diameter.

Returns:

Compactness.

EulerNumber

public static int EulerNumber(FastBitmap fastBitmap)

Euler number. Number of holes in the shape.

Parameters:

fastBitmap - Image to be processed.

Returns:

Euler number.

FeretDiameter

public static double FeretDiameter(java.util.List<IntPoint> contour)

Feret Diameter. Feret diameter is also called the maximum diameter in image.

Parameters:

contour - Contour of the image.

Returns:

Feret diameter.

FeretPoints

public static java.util.List<IntPoint> FeretPoints(java.util.List<IntPoint> contour)

Feret Points

Parameters:

contour - Contour of the shape.

Returns:

Feret Points.

Irregularity

public static double Irregularity(double thinnessRatio)

MaximumErrorCircularity

public static double MaximumErrorCircularity(double mcc,
                                             double mic)

Maximum error circularity.

Parameters:

mcc - Minimum Circumscribed Circle.

mic - Maximum Inscribed Circle.

Returns:

Maximum error circularity.

MaximumInscribedCircle

public static double MaximumInscribedCircle(FastBitmap fastBitmap)

Maximum inscribed circle.

Parameters:

fastBitmap - Image to be processed.

Returns:

Maximum inscribed circle.

MinimumCircumscribedCircle

public static double MinimumCircumscribedCircle(IntPoint starPoint,
                                                java.util.List<IntPoint> contour)

Minimum circumscribed circle.

Parameters:

starPoint - The point where is the most distance from nearest boundary.

contour - Contour of the shape.

Returns:

Minimum circumscribed circle.

StarPoint

public static IntPoint StarPoint(FastBitmap fastBitmap)

Star Point.

Parameters:

fastBitmap - Image to be processed.

Returns:

IntPoint The point where is the most distance from nearest boundary.

PerimeterEquivalentDiameter

public static double PerimeterEquivalentDiameter(int area)

Perimeter Equivalent Diameter. Equation: area / PI

Parameters:

area - Area.

Returns:

Perimeter Equivalent Diameter.

Roughness

public static double Roughness(int width,
                               int height)

Roughness. Equation: (width / height)

Parameters:

width - Width of the object.

height - Height of the object.

Returns:

Roughness.

Roundness

public static double Roundness(int area,
                               double feretDiameter)

Roundness. Equation: (4 * area) / (PI * (feretDiameter ^ 2)

Parameters:

area - Area.

feretDiameter - Feret diameter.

Returns:

Roundness.

Shape

public static double Shape(int area,
                           int perimeter)

Shape. Equation: (perimeter ^ 2) / area

Parameters:

area - Area.

perimeter - Perimeter.

Returns:

Shape.

ThinnessRatio

public static double ThinnessRatio(int area,
                                   int perimeter)

Thinness Ratio. Equation: 4 * Pi * (area/perimeter).

Parameters:

area - Area.

perimeter - Perimeter.

Returns:

Thinness ratio.

UltimateErodedPoints

public static java.util.List<IntPoint> UltimateErodedPoints(FastBitmap fastBitmap)

Ultimate Eroded Points. Computes the ultimate points from erosion operation.

Parameters:

fastBitmap - Image to be processed.

Returns:

List of points contains