Package org.anchoranalysis.plugin.image.segment.watershed.encoding

Class WatershedEncoding

Object

WatershedEncoding

All Implemented Interfaces:

EncodeDirection

public class WatershedEncoding
extends Object
implements EncodeDirection

Encodes watershed-related information in an integer range.

This class encodes three types of information:

• A number of state-machine-type constants
• 27 Directions representing [-1,0,-1]X[-1,0,-1]X[-1,0,-1]
• A sequence of connected components IDs starting at 0

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CODE_MINIMA	Code representing a minima voxel.
static final int	CODE_PLATEAU	Code representing a plateau voxel.
static final int	CODE_TEMPORARY	Code representing a temporary voxel.
static final int	CODE_UNVISITED	Code representing an unvisited voxel.

Constructor Summary

Constructors

Constructor	Description
WatershedEncoding()

Method Summary

Modifier and Type	Method	Description
Point3i	chainCodes(int chainCode)	Decodes a chain-code into a point.
int	decodeConnectedComponentID(int code)	Decodes a connected component ID from its encoded form.
int	encodeConnectedComponentID(int connectedComponentID)	Encodes a connected component ID.
int	encodeDirection(int x, int y, int z)	Encodes a 3D direction into an integer representation.
boolean	isConnectedComponentIDCode(int code)	Checks if the given code represents a connected component ID.
boolean	isDirectionChainCode(int code)	Checks if the given code represents a direction chain code.

Methods inherited from class java.lang.Object

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

Field Details

CODE_UNVISITED

public static final int CODE_UNVISITED

Code representing an unvisited voxel.

See Also:

• Constant Field Values

CODE_TEMPORARY

public static final int CODE_TEMPORARY

Code representing a temporary voxel.

See Also:

• Constant Field Values

CODE_MINIMA

public static final int CODE_MINIMA

Code representing a minima voxel.

See Also:

• Constant Field Values

CODE_PLATEAU

public static final int CODE_PLATEAU

Code representing a plateau voxel.

See Also:

• Constant Field Values

Constructor Details

WatershedEncoding

public WatershedEncoding()

Method Details

encodeDirection

public int encodeDirection(int x,
 int y,
 int z)

Encodes a 3D direction into an integer representation.

Specified by:

encodeDirection in interface EncodeDirection

Parameters:

x - the x-component of the direction

y - the y-component of the direction

z - the z-component of the direction

Returns:

an integer encoding of the direction

chainCodes

public Point3i chainCodes(int chainCode)

Decodes a chain-code into a point.

Parameters:

chainCode - the chain-code to decode

Returns:

a new Point3i (always newly created) for the given chain-code

encodeConnectedComponentID

public int encodeConnectedComponentID(int connectedComponentID)

Encodes a connected component ID.

Parameters:

connectedComponentID - the ID of the connected component to encode

Returns:

the encoded value for the connected component ID

isDirectionChainCode

public boolean isDirectionChainCode(int code)

Checks if the given code represents a direction chain code.

Parameters:

code - the code to check

Returns:

true if the code represents a direction chain code, false otherwise

isConnectedComponentIDCode

public boolean isConnectedComponentIDCode(int code)

Checks if the given code represents a connected component ID.

Parameters:

code - the code to check

Returns:

true if the code represents a connected component ID, false otherwise

decodeConnectedComponentID

public int decodeConnectedComponentID(int code)

Decodes a connected component ID from its encoded form.

Parameters:

code - the encoded connected component ID

Returns:

the decoded connected component ID