tesseract::StrokeWidth Class Reference

#include <strokewidth.h>

Inheritance diagram for tesseract::StrokeWidth:

Collaboration diagram for tesseract::StrokeWidth:

Public Member Functions
	StrokeWidth (int gridsize, const ICOORD &bleft, const ICOORD &tright)
virtual	~StrokeWidth ()
void	SetNeighboursOnMediumBlobs (TO_BLOCK *block)
void	FindTextlineDirectionAndFixBrokenCJK (PageSegMode pageseg_mode, bool cjk_merge, TO_BLOCK *input_block)
bool	TestVerticalTextDirection (double find_vertical_text_ratio, TO_BLOCK *block, BLOBNBOX_CLIST *osd_blobs)
void	CorrectForRotation (const FCOORD &rerotation, ColPartitionGrid *part_grid)
void	FindLeaderPartitions (TO_BLOCK *block, ColPartitionGrid *part_grid)
void	RemoveLineResidue (ColPartition_LIST *big_part_list)
void	GradeBlobsIntoPartitions (PageSegMode pageseg_mode, const FCOORD &rerotation, TO_BLOCK *block, Pix *nontext_pix, const DENORM *denorm, bool cjk_script, TextlineProjection *projection, BLOBNBOX_LIST *diacritic_blobs, ColPartitionGrid *part_grid, ColPartition_LIST *big_parts)
virtual void	HandleClick (int x, int y)
Public Member Functions inherited from tesseract::BlobGrid
	BlobGrid (int gridsize, const ICOORD &bleft, const ICOORD &tright)
virtual	~BlobGrid ()
void	InsertBlobList (BLOBNBOX_LIST *blobs)
Public Member Functions inherited from tesseract::BBGrid< BLOBNBOX, BLOBNBOX_CLIST, BLOBNBOX_C_IT >
	BBGrid ()
	BBGrid (int gridsize, const ICOORD &bleft, const ICOORD &tright)
virtual	~BBGrid ()
void	Init (int gridsize, const ICOORD &bleft, const ICOORD &tright)
void	Clear ()
void	ClearGridData (void(*free_method)(BLOBNBOX *))
void	InsertBBox (bool h_spread, bool v_spread, BLOBNBOX *bbox)
void	InsertPixPtBBox (int left, int bottom, Pix *pix, BLOBNBOX *bbox)
void	RemoveBBox (BLOBNBOX *bbox)
bool	RectangleEmpty (const TBOX &rect)
IntGrid *	CountCellElements ()
ScrollView *	MakeWindow (int x, int y, const char *window_name)
void	DisplayBoxes (ScrollView *window)
void	AssertNoDuplicates ()
Public Member Functions inherited from tesseract::GridBase
	GridBase ()=default
	GridBase (int gridsize, const ICOORD &bleft, const ICOORD &tright)
virtual	~GridBase ()
void	Init (int gridsize, const ICOORD &bleft, const ICOORD &tright)
int	gridsize () const
int	gridwidth () const
int	gridheight () const
const ICOORD &	bleft () const
const ICOORD &	tright () const
void	GridCoords (int x, int y, int *grid_x, int *grid_y) const
void	ClipGridCoords (int *x, int *y) const

Private Member Functions
void	ComputeNoiseDensity (TO_BLOCK *block, TabFind *line_grid)
void	FindLeadersAndMarkNoise (TO_BLOCK *block, ColPartition_LIST *leader_parts)
void	InsertBlobs (TO_BLOCK *block)
bool	FixBrokenCJK (TO_BLOCK *block)
void	AccumulateOverlaps (const BLOBNBOX *not_this, bool debug, int max_size, int max_dist, TBOX *bbox, BLOBNBOX_CLIST *blobs)
void	FindTextlineFlowDirection (PageSegMode pageseg_mode, bool display_if_debugging)
void	SetNeighbours (bool leaders, bool activate_line_trap, BLOBNBOX *blob)
int	FindGoodNeighbour (BlobNeighbourDir dir, bool leaders, BLOBNBOX *blob)
void	SetNeighbourFlows (BLOBNBOX *blob)
void	SimplifyObviousNeighbours (BLOBNBOX *blob)
void	SmoothNeighbourTypes (PageSegMode pageseg_mode, bool desperate, BLOBNBOX *blob)
void	MarkLeaderNeighbours (const ColPartition *part, LeftOrRight side)
PartitionFindResult	FindInitialPartitions (PageSegMode pageseg_mode, const FCOORD &rerotation, bool find_problems, TO_BLOCK *block, BLOBNBOX_LIST *diacritic_blobs, ColPartitionGrid *part_grid, ColPartition_LIST *big_parts, FCOORD *skew_angle)
bool	DetectAndRemoveNoise (int pre_overlap, const TBOX &grid_box, TO_BLOCK *block, ColPartitionGrid *part_grid, BLOBNBOX_LIST *diacritic_blobs)
void	FindVerticalTextChains (ColPartitionGrid *part_grid)
void	FindHorizontalTextChains (ColPartitionGrid *part_grid)
void	TestDiacritics (ColPartitionGrid *part_grid, TO_BLOCK *block)
bool	DiacriticBlob (BlobGrid *small_grid, BLOBNBOX *blob)
bool	DiacriticXGapFilled (BlobGrid *grid, const TBOX &diacritic_box, const TBOX &base_box)
void	MergeDiacritics (TO_BLOCK *block, ColPartitionGrid *part_grid)
void	RemoveLargeUnusedBlobs (TO_BLOCK *block, ColPartitionGrid *part_grid, ColPartition_LIST *big_parts)
void	PartitionRemainingBlobs (PageSegMode pageseg_mode, ColPartitionGrid *part_grid)
void	MakePartitionsFromCellList (PageSegMode pageseg_mode, bool combine, ColPartitionGrid *part_grid, BLOBNBOX_CLIST *cell_list)
void	CompletePartition (PageSegMode pageseg_mode, ColPartition *part, ColPartitionGrid *part_grid)
bool	FindingVerticalOnly (PageSegMode pageseg_mode) const
bool	FindingHorizontalOnly (PageSegMode pageseg_mode) const
void	EasyMerges (ColPartitionGrid *part_grid)
bool	OrientationSearchBox (ColPartition *part, TBOX *box)
bool	ConfirmEasyMerge (const ColPartition *p1, const ColPartition *p2)
bool	NoNoiseInBetween (const TBOX &box1, const TBOX &box2) const
ScrollView *	DisplayGoodBlobs (const char *window_name, int x, int y)
ScrollView *	DisplayDiacritics (const char *window_name, int x, int y, TO_BLOCK *block)

Private Attributes
Pix *	nontext_map_
TextlineProjection *	projection_
const DENORM *	denorm_
TBOX	grid_box_
FCOORD	rerotation_
ScrollView *	leaders_win_
ScrollView *	initial_widths_win_
ScrollView *	widths_win_
ScrollView *	chains_win_
ScrollView *	diacritics_win_
ScrollView *	textlines_win_
ScrollView *	smoothed_win_

Additional Inherited Members
Protected Attributes inherited from tesseract::BBGrid< BLOBNBOX, BLOBNBOX_CLIST, BLOBNBOX_C_IT >
BLOBNBOX_CLIST *	grid_
Protected Attributes inherited from tesseract::GridBase
int	gridsize_
int	gridwidth_
int	gridheight_
int	gridbuckets_
ICOORD	bleft_
ICOORD	tright_

Detailed Description

The StrokeWidth class holds all the normal and large blobs. It is used to find good large blobs and move them to the normal blobs by virtue of having a reasonable strokewidth compatible neighbour.

Constructor & Destructor Documentation

StrokeWidth()

tesseract::StrokeWidth::StrokeWidth	(	int	gridsize,
		const ICOORD &	bleft,
		const ICOORD &	tright
	)

~StrokeWidth()

tesseract::StrokeWidth::~StrokeWidth ( )

virtual

Member Function Documentation

AccumulateOverlaps()

void tesseract::StrokeWidth::AccumulateOverlaps ( const BLOBNBOX *  not_this, bool  debug, int  max_size, int  max_dist, TBOX *  bbox, BLOBNBOX_CLIST *  blobs  )

private

CompletePartition()

void tesseract::StrokeWidth::CompletePartition ( PageSegMode  pageseg_mode, ColPartition *  part, ColPartitionGrid *  part_grid  )

private

ComputeNoiseDensity()

void tesseract::StrokeWidth::ComputeNoiseDensity ( TO_BLOCK *  block, TabFind *  line_grid  )

private

ConfirmEasyMerge()

bool tesseract::StrokeWidth::ConfirmEasyMerge ( const ColPartition *  p1, const ColPartition *  p2  )

private

CorrectForRotation()

void tesseract::StrokeWidth::CorrectForRotation	(	const FCOORD &	rerotation,
		ColPartitionGrid *	part_grid
	)

DetectAndRemoveNoise()

bool tesseract::StrokeWidth::DetectAndRemoveNoise ( int  pre_overlap, const TBOX &  grid_box, TO_BLOCK *  block, ColPartitionGrid *  part_grid, BLOBNBOX_LIST *  diacritic_blobs  )

private

DiacriticBlob()

bool tesseract::StrokeWidth::DiacriticBlob ( BlobGrid *  small_grid, BLOBNBOX *  blob  )

private

DiacriticXGapFilled()

bool tesseract::StrokeWidth::DiacriticXGapFilled ( BlobGrid *  grid, const TBOX &  diacritic_box, const TBOX &  base_box  )

private

DisplayDiacritics()

ScrollView * tesseract::StrokeWidth::DisplayDiacritics ( const char *  window_name, int  x, int  y, TO_BLOCK *  block  )

private

DisplayGoodBlobs()

ScrollView * tesseract::StrokeWidth::DisplayGoodBlobs ( const char *  window_name, int  x, int  y  )

private

Displays the blobs colored according to the number of good neighbours and the vertical/horizontal flow.

EasyMerges()

void tesseract::StrokeWidth::EasyMerges ( ColPartitionGrid *  part_grid )

private

FindGoodNeighbour()

int tesseract::StrokeWidth::FindGoodNeighbour ( BlobNeighbourDir  dir, bool  leaders, BLOBNBOX *  blob  )

private

FindHorizontalTextChains()

void tesseract::StrokeWidth::FindHorizontalTextChains ( ColPartitionGrid *  part_grid )

private

FindingHorizontalOnly()

bool tesseract::StrokeWidth::FindingHorizontalOnly ( PageSegMode  pageseg_mode ) const

inlineprivate

FindingVerticalOnly()

bool tesseract::StrokeWidth::FindingVerticalOnly ( PageSegMode  pageseg_mode ) const

inlineprivate

FindInitialPartitions()

PartitionFindResult tesseract::StrokeWidth::FindInitialPartitions ( PageSegMode  pageseg_mode, const FCOORD &  rerotation, bool  find_problems, TO_BLOCK *  block, BLOBNBOX_LIST *  diacritic_blobs, ColPartitionGrid *  part_grid, ColPartition_LIST *  big_parts, FCOORD *  skew_angle  )

private

FindLeaderPartitions()

void tesseract::StrokeWidth::FindLeaderPartitions	(	TO_BLOCK *	block,
		ColPartitionGrid *	part_grid
	)

FindLeadersAndMarkNoise()

void tesseract::StrokeWidth::FindLeadersAndMarkNoise ( TO_BLOCK *  block, ColPartition_LIST *  leader_parts  )

private

FindTextlineDirectionAndFixBrokenCJK()

void tesseract::StrokeWidth::FindTextlineDirectionAndFixBrokenCJK	(	PageSegMode	pageseg_mode,
		bool	cjk_merge,
		TO_BLOCK *	input_block
	)

FindTextlineFlowDirection()

void tesseract::StrokeWidth::FindTextlineFlowDirection ( PageSegMode  pageseg_mode, bool  display_if_debugging  )

private

FindVerticalTextChains()

void tesseract::StrokeWidth::FindVerticalTextChains ( ColPartitionGrid *  part_grid )

private

FixBrokenCJK()

bool tesseract::StrokeWidth::FixBrokenCJK ( TO_BLOCK *  block )

private

GradeBlobsIntoPartitions()

void tesseract::StrokeWidth::GradeBlobsIntoPartitions	(	PageSegMode	pageseg_mode,
		const FCOORD &	rerotation,
		TO_BLOCK *	block,
		Pix *	nontext_pix,
		const DENORM *	denorm,
		bool	cjk_script,
		TextlineProjection *	projection,
		BLOBNBOX_LIST *	diacritic_blobs,
		ColPartitionGrid *	part_grid,
		ColPartition_LIST *	big_parts
	)

HandleClick()

void tesseract::StrokeWidth::HandleClick ( int  x, int  y  )

virtual

Handles a click event in a display window.

Reimplemented from tesseract::BBGrid< BLOBNBOX, BLOBNBOX_CLIST, BLOBNBOX_C_IT >.

InsertBlobs()

void tesseract::StrokeWidth::InsertBlobs ( TO_BLOCK *  block )

private

Inserts the block blobs (normal and large) into this grid. Blobs remain owned by the block.

MakePartitionsFromCellList()

void tesseract::StrokeWidth::MakePartitionsFromCellList ( PageSegMode  pageseg_mode, bool  combine, ColPartitionGrid *  part_grid, BLOBNBOX_CLIST *  cell_list  )

private

MarkLeaderNeighbours()

void tesseract::StrokeWidth::MarkLeaderNeighbours ( const ColPartition *  part, LeftOrRight  side  )

private

MergeDiacritics()

void tesseract::StrokeWidth::MergeDiacritics ( TO_BLOCK *  block, ColPartitionGrid *  part_grid  )

private

NoNoiseInBetween()

bool tesseract::StrokeWidth::NoNoiseInBetween ( const TBOX &  box1, const TBOX &  box2  ) const

private

OrientationSearchBox()

bool tesseract::StrokeWidth::OrientationSearchBox ( ColPartition *  part, TBOX *  box  )

private

PartitionRemainingBlobs()

void tesseract::StrokeWidth::PartitionRemainingBlobs ( PageSegMode  pageseg_mode, ColPartitionGrid *  part_grid  )

private

RemoveLargeUnusedBlobs()

void tesseract::StrokeWidth::RemoveLargeUnusedBlobs ( TO_BLOCK *  block, ColPartitionGrid *  part_grid, ColPartition_LIST *  big_parts  )

private

RemoveLineResidue()

void tesseract::StrokeWidth::RemoveLineResidue

(

ColPartition_LIST *

big_part_list

)

SetNeighbourFlows()

void tesseract::StrokeWidth::SetNeighbourFlows ( BLOBNBOX *  blob )

private

SetNeighbours()

void tesseract::StrokeWidth::SetNeighbours ( bool  leaders, bool  activate_line_trap, BLOBNBOX *  blob  )

private

SetNeighboursOnMediumBlobs()

void tesseract::StrokeWidth::SetNeighboursOnMediumBlobs

(

TO_BLOCK *

block

)

SimplifyObviousNeighbours()

void tesseract::StrokeWidth::SimplifyObviousNeighbours ( BLOBNBOX *  blob )

private

SmoothNeighbourTypes()

void tesseract::StrokeWidth::SmoothNeighbourTypes ( PageSegMode  pageseg_mode, bool  desperate, BLOBNBOX *  blob  )

private

TestDiacritics()

void tesseract::StrokeWidth::TestDiacritics ( ColPartitionGrid *  part_grid, TO_BLOCK *  block  )

private

TestVerticalTextDirection()

bool tesseract::StrokeWidth::TestVerticalTextDirection	(	double	find_vertical_text_ratio,
		TO_BLOCK *	block,
		BLOBNBOX_CLIST *	osd_blobs
	)

Member Data Documentation

chains_win_

ScrollView* tesseract::StrokeWidth::chains_win_

private

denorm_

const DENORM* tesseract::StrokeWidth::denorm_

private

diacritics_win_

ScrollView* tesseract::StrokeWidth::diacritics_win_

private

grid_box_

TBOX tesseract::StrokeWidth::grid_box_

private

initial_widths_win_

ScrollView* tesseract::StrokeWidth::initial_widths_win_

private

leaders_win_

ScrollView* tesseract::StrokeWidth::leaders_win_

private

nontext_map_

Pix* tesseract::StrokeWidth::nontext_map_

private

projection_

TextlineProjection* tesseract::StrokeWidth::projection_

private

rerotation_

FCOORD tesseract::StrokeWidth::rerotation_

private

smoothed_win_

ScrollView* tesseract::StrokeWidth::smoothed_win_

private

textlines_win_

ScrollView* tesseract::StrokeWidth::textlines_win_

private

widths_win_

ScrollView* tesseract::StrokeWidth::widths_win_

private

---

The documentation for this class was generated from the following files:

• /home/stephane/src/tesseract/src/textord/strokewidth.h
• /home/stephane/src/tesseract/src/textord/strokewidth.cpp