org.openimaj.image.objectdetection.haar.training

Enum HaarFeatureType

java.lang.Object

java.lang.Enum<HaarFeatureType>

org.openimaj.image.objectdetection.haar.training.HaarFeatureType

All Implemented Interfaces:

Serializable, Comparable<HaarFeatureType>

public enum HaarFeatureType
extends Enum<HaarFeatureType>

Definitions of standard haar-like features.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Enum Constant Summary

Enum Constants

Enum Constant and Description
CS Centre-surround feature:
TX2 Tilted two component feature:
TX3 Tilted three component feature:
TX4 Tilted three component feature:
TY2 Tilted two component feature:
TY3 Tilted three component feature:
TY4 Tilted three component feature:
X2 Two component feature:
X2Y2 Four component feature:
X3 Three component feature:
X4 Three component feature:
Y2 Two component feature:
Y3 Three component feature:
Y4 Three component feature:

Field Summary

Fields

Modifier and Type	Field and Description
static EnumSet<HaarFeatureType>	ALL Set of all the features
static EnumSet<HaarFeatureType>	BASIC Set of the basic features (non tilted edges & lines + X2Y2)
static EnumSet<HaarFeatureType>	CORE Set of the core features (all but tilted features)

Method Summary

Modifier and Type	Method and Description
abstract HaarFeature	create(int x, int y, int dx, int dy, int winWidth, int winHeight) Create a feature.
static List<HaarFeature>	generateFeatures(int winWidth, int winHeight, Collection<HaarFeatureType> types) Generate features of the given types for all possible locations and sizes in the given window bounds.
static List<HaarFeature>	generateFeatures(int winWidth, int winHeight, HaarFeatureType... types) Generate features of the given types for all possible locations and sizes in the given window bounds.
static HaarFeatureType	valueOf(String name) Returns the enum constant of this type with the specified name.
static HaarFeatureType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

X2

public static final HaarFeatureType X2

Two component feature:

 0 X
 

Y2

public static final HaarFeatureType Y2

Two component feature:

 0
 X
 

X3

public static final HaarFeatureType X3

Three component feature:

 0 X 0
 

Y3

public static final HaarFeatureType Y3

Three component feature:

 0
 X
 0
 

X4

public static final HaarFeatureType X4

Three component feature:

 0 X X 0
 

Y4

public static final HaarFeatureType Y4

Three component feature:

 0
 X
 X
 0
 

X2Y2

public static final HaarFeatureType X2Y2

Four component feature:

 X 0
 0 X
 

CS

public static final HaarFeatureType CS

Centre-surround feature:

 0 0 0
 0 X 0
 0 0 0
 

TX2

public static final HaarFeatureType TX2

Tilted two component feature:

 0 - -X
 

TY2

public static final HaarFeatureType TY2

Tilted two component feature:

 - 0
 X -
 

TX3

public static final HaarFeatureType TX3

Tilted three component feature:

 0 - -
                -X -
                - -0
 

TY3

public static final HaarFeatureType TY3

Tilted three component feature:

 - - 0
 - X -
 0 - -
 

TX4

public static final HaarFeatureType TX4

Tilted three component feature:

 0 - - -
                -X - -
                - -X -
                - - -0
 

TY4

public static final HaarFeatureType TY4

Tilted three component feature:

 - - - 0
 - - X -
 - X - - 
 0 - - -
 

Field Detail

ALL

public static EnumSet<HaarFeatureType> ALL

Set of all the features

BASIC

public static EnumSet<HaarFeatureType> BASIC

Set of the basic features (non tilted edges & lines + X2Y2)

CORE

public static EnumSet<HaarFeatureType> CORE

Set of the core features (all but tilted features)

Method Detail

values

public static HaarFeatureType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (HaarFeatureType c : HaarFeatureType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static HaarFeatureType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

create

public abstract HaarFeature create(int x,
                                   int y,
                                   int dx,
                                   int dy,
                                   int winWidth,
                                   int winHeight)

Create a feature.

Parameters:

x - x-location

y - y-location

dx - x-delta

dy - y-delta

winWidth - window width

winHeight - window height

Returns:

the new feature, or null if the parameters are out of range.

generateFeatures

public static List<HaarFeature> generateFeatures(int winWidth,
                                                 int winHeight,
                                                 HaarFeatureType... types)

Generate features of the given types for all possible locations and sizes in the given window bounds.

Parameters:

winWidth - window width

winHeight - window height

types - types of feature to generate

Returns:

the generated features

generateFeatures

public static List<HaarFeature> generateFeatures(int winWidth,
                                                 int winHeight,
                                                 Collection<HaarFeatureType> types)

Generate features of the given types for all possible locations and sizes in the given window bounds.

Parameters:

winWidth - window width

winHeight - window height

types - types of feature to generate

Returns:

the generated features