com.emphysic.myriad.core.data.ops

Class Otsu1dOperation

java.lang.Object

com.emphysic.myriad.core.data.ops.Otsu1dOperation

All Implemented Interfaces:

DatasetOperation, ObjectMap, com.esotericsoftware.kryo.KryoSerializable

public class Otsu1dOperation
extends java.lang.Object
implements DatasetOperation

Otsu's global thresholding algorithm (1D). Based on Balarini and Nesmachnow, "A C++ Implementation of Otsu’s Image Segmentation Method, Image Processing On Line, 6 (2016), pp. 155–164" https://doi.org/10.5201/ipol.2016.158

Constructor Summary

Constructors

Constructor and Description
Otsu1dOperation()

Method Summary

Modifier and Type	Method and Description
static int	calcThreshold(Dataset input) Calculates Otsu's threshold for a given Dataset.
static int	calcThreshold(Dataset input, boolean normalize) Calculates Otsu's threshold for a given Dataset.
long	getSerializationVersion() Returns the current version of the serialization format.
int	getVersion() Returns the current class version.
void	initCurrentVersion(java.util.Map<java.lang.String,java.lang.Object> objectMap) Initializes an instance with a current-version object graph.
Dataset	run(Dataset input) Runs the operation on an input.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.emphysic.myriad.core.data.util.ObjectMap

getObjectMap, init, initPreviousVersion, initUnknownVersion, load, read, save, write

Constructor Detail

Otsu1dOperation

public Otsu1dOperation()

Method Detail

run

public Dataset run(Dataset input)

Description copied from interface: DatasetOperation

Runs the operation on an input.

Specified by:

run in interface DatasetOperation

Parameters:

input - Dataset on which to operate

Returns:

result

getSerializationVersion

public long getSerializationVersion()

Description copied from interface: ObjectMap

Returns the current version of the serialization format. Increments when the serialization format changes, i.e. backwards compatibility is broken.

Specified by:

getSerializationVersion in interface ObjectMap

Returns:

serialization version

getVersion

public int getVersion()

Description copied from interface: ObjectMap

Returns the current class version. Class version increments when the class changes but doesn't necessarily break compatibility with serialization.

Specified by:

getVersion in interface ObjectMap

Returns:

class version

initCurrentVersion

public void initCurrentVersion(java.util.Map<java.lang.String,java.lang.Object> objectMap)

Description copied from interface: ObjectMap

Initializes an instance with a current-version object graph.

Specified by:

initCurrentVersion in interface ObjectMap

Parameters:

objectMap - object graph for initialization

calcThreshold

public static int calcThreshold(Dataset input)

Calculates Otsu's threshold for a given Dataset.

Parameters:

input - Dataset to threshold

Returns:

threshold value between 0 and 255

calcThreshold

public static int calcThreshold(Dataset input,
                                boolean normalize)

Calculates Otsu's threshold for a given Dataset.

Parameters:

input - Dataset to threshold

normalize - if true, convert input data to gray scale prior to calculating the threshold

Returns:

threshold value between 0 and 255