org.fit.segm.grouping

Class SegmentationAreaTree

java.lang.Object

org.fit.segm.grouping.SegmentationAreaTree

All Implemented Interfaces:

AreaTree, SearchableAreaContainer

public class SegmentationAreaTree
extends java.lang.Object
implements AreaTree

A tree of visual areas created from a box tree.

Author:

burgetr

Field Summary

Fields

Modifier and Type	Field and Description
protected Page	page The source tree
protected AreaImpl	rootarea The root node area

Constructor Summary

Constructors

Constructor and Description
SegmentationAreaTree(Page srcpage) Create a new tree of areas by the analysis of a box tree

Method Summary

Methods

Modifier and Type	Method and Description
protected void	createGrids(AreaImpl root) Goes through all the areas in the tree and creates the grids in these areas
Area	findBasicAreas() Creates the area tree skeleton - selects the visible boxes and converts them to areas
Area	getAreaAt(int x, int y) Finds the bottom-most area node present at the given coordinates in the area tree.
Area	getAreaByName(java.lang.String name) Finds an area by the given name.
Area	getRoot() Obtains the root node of the area tree.
java.util.Set<Tag>	getUsedTags() Obtains all the tags that are really used in the tree.
static boolean	isVisuallySeparated(Box box)

Methods inherited from class java.lang.Object

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

Field Detail

page

protected Page page

The source tree

rootarea

protected AreaImpl rootarea

The root node area

Constructor Detail

SegmentationAreaTree

public SegmentationAreaTree(Page srcpage)

Create a new tree of areas by the analysis of a box tree

Parameters:

srcpage - the source box tree

Method Detail

getRoot

public Area getRoot()

Description copied from interface: AreaTree

Obtains the root node of the area tree.

Specified by:

getRoot in interface AreaTree

Returns:

the root node of the tree of areas

findBasicAreas

public Area findBasicAreas()

Creates the area tree skeleton - selects the visible boxes and converts them to areas

createGrids

protected void createGrids(AreaImpl root)

Goes through all the areas in the tree and creates the grids in these areas

Parameters:

root - the root node of the tree of areas

isVisuallySeparated

public static boolean isVisuallySeparated(Box box)

getAreaAt

public Area getAreaAt(int x,
             int y)

Description copied from interface: SearchableAreaContainer

Finds the bottom-most area node present at the given coordinates in the area tree.

Specified by:

getAreaAt in interface SearchableAreaContainer

Parameters:

x - the X coordinate

y - the Y coordinate

Returns:

the area node present at the given coordinates or null when no node is found.

getAreaByName

public Area getAreaByName(java.lang.String name)

Description copied from interface: SearchableAreaContainer

Finds an area by the given name.

Specified by:

getAreaByName in interface SearchableAreaContainer

Parameters:

name - the name of the area

Returns:

the area with the given name or null when nothing is found.

getUsedTags

public java.util.Set<Tag> getUsedTags()

Obtains all the tags that are really used in the tree.

Returns:

A set of used tags.