Package com.openinventor.imageviz.engines.geometryandmatching.registration

Enum SoImageRegistrationTransform.MetricTypes

java.lang.Object

java.lang.Enum<SoImageRegistrationTransform.MetricTypes>

com.openinventor.imageviz.engines.geometryandmatching.registration.SoImageRegistrationTransform.MetricTypes

All Implemented Interfaces:

IntegerValuedEnum, java.io.Serializable, java.lang.Comparable<SoImageRegistrationTransform.MetricTypes>

Enclosing class:

SoImageRegistrationTransform

public static enum SoImageRegistrationTransform.MetricTypes
extends java.lang.Enum<SoImageRegistrationTransform.MetricTypes>
implements IntegerValuedEnum

This enum defines the different types of metric used to compute the similarity value.

Enum Constant Summary

Enum Constants

Enum Constant	Description
CORRELATION	Correlation measures the correlation ratio of the registered images.
EUCLIDIAN	Euclidean means the Euclidean distance, i.e., the mean squared difference between the gray values of model and reference.
NORMALIZED_MUTUAL_INFORMATION	The mutual information measures the information shared by both images.

Method Summary

Modifier and Type	Method	Description
int	getValue()	Returns the integer value of the enum constant.
static SoImageRegistrationTransform.MetricTypes	valueOf(int val)	Returns the enum constant of this type with the specified integer value
static SoImageRegistrationTransform.MetricTypes	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static SoImageRegistrationTransform.MetricTypes[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

EUCLIDIAN

public static final SoImageRegistrationTransform.MetricTypes EUCLIDIAN

Euclidean means the Euclidean distance, i.e., the mean squared difference between the gray values of model and reference. This metric computes values between and 0. Images closer to each other will have a metric closer to 0. where are the individual voxels and is the voxel count.

CORRELATION

public static final SoImageRegistrationTransform.MetricTypes CORRELATION

Correlation measures the correlation ratio of the registered images. This metric computes values between 0 and 1. The case correlation ratio = 1 corresponds to the case of two identical and registered images. where is the voxel mean.

NORMALIZED_MUTUAL_INFORMATION

public static final SoImageRegistrationTransform.MetricTypes NORMALIZED_MUTUAL_INFORMATION

The mutual information measures the information shared by both images. This metric computes values between 0 and . For instance, if images are independent, knowing does not give any information about and vice versa, so their mutual information is zero.

The mutual information metrics, especially the normalized one, are recommended when images from different modalities, e.g., CT and MRT, are to be registered.

The mutual information is: Where and are the marginal entropies of the image histrograms and is the joint entropy of the image histograms.

Method Detail

values

public static SoImageRegistrationTransform.MetricTypes[] 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 (SoImageRegistrationTransform.MetricTypes c : SoImageRegistrationTransform.MetricTypes.values())
    System.out.println(c);

Returns:

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

valueOf

public static SoImageRegistrationTransform.MetricTypes valueOf(java.lang.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:

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

java.lang.NullPointerException - if the argument is null

valueOf

public static SoImageRegistrationTransform.MetricTypes valueOf(int val)

Returns the enum constant of this type with the specified integer value

Returns:

the enum constant of this type with the specified integer value.

getValue

public int getValue()

Description copied from interface: IntegerValuedEnum

Returns the integer value of the enum constant.

Specified by:

getValue in interface IntegerValuedEnum

Returns:

the integer value of the enum constant.