TO_ROW Class Reference

#include <blobbox.h>

Inheritance diagram for TO_ROW:

Public Member Functions
	TO_ROW ()
	TO_ROW (BLOBNBOX *blob, float top, float bottom, float row_size)
void	print () const
float	max_y () const
float	min_y () const
float	mean_y () const
float	initial_min_y () const
float	line_m () const
float	line_c () const
float	line_error () const
float	parallel_c () const
float	parallel_error () const
float	believability () const
float	intercept () const
void	add_blob (BLOBNBOX *blob, float top, float bottom, float row_size)
void	insert_blob (BLOBNBOX *blob)
BLOBNBOX_LIST *	blob_list ()
void	set_line (float new_m, float new_c, float new_error)
void	set_parallel_line (float gradient, float new_c, float new_error)
void	set_limits (float new_min, float new_max)
void	compute_vertical_projection ()
bool	rep_chars_marked () const
void	clear_rep_chars_marked ()
int	num_repeated_sets () const
void	set_num_repeated_sets (int num_sets)
Public Member Functions inherited from ELIST2_LINK
	ELIST2_LINK ()
	ELIST2_LINK (const ELIST2_LINK &)
void	operator= (const ELIST2_LINK &)

Public Attributes
BOOL8	merged
BOOL8	all_caps
BOOL8	used_dm_model
inT16	projection_left
inT16	projection_right
PITCH_TYPE	pitch_decision
float	fixed_pitch
float	fp_space
float	fp_nonsp
float	pr_space
float	pr_nonsp
float	spacing
float	xheight
int	xheight_evidence
float	ascrise
float	descdrop
float	body_size
inT32	min_space
inT32	max_nonspace
inT32	space_threshold
float	kern_size
float	space_size
WERD_LIST	rep_words
ICOORDELT_LIST	char_cells
QSPLINE	baseline
STATS	projection

Static Public Attributes
static const int	kErrorWeight = 3

Detailed Description

Definition at line 539 of file blobbox.h.

Constructor & Destructor Documentation

TO_ROW() [1/2]

TO_ROW::TO_ROW ( )

inline

Definition at line 544 of file blobbox.h.

             {
      clear();
    }                            //empty

TO_ROW() [2/2]

TO_ROW::TO_ROW	(	BLOBNBOX *	blob,
		float	top,
		float	bottom,
		float	row_size
	)

Definition at line 684 of file blobbox.cpp.

  {
  clear();
  y_min = bottom;
  y_max = top;
  initial_y_min = bottom;

  float diff;                    //in size
  BLOBNBOX_IT it = &blobs;       //list of blobs

  it.add_to_end (blob);
  diff = top - bottom - row_size;
  if (diff > 0) {
    y_max -= diff / 2;
    y_min += diff / 2;
  }
                                 //very small object
  else if ((top - bottom) * 3 < row_size) {
    diff = row_size / 3 + bottom - top;
    y_max += diff / 2;
    y_min -= diff / 2;
  }
}

Member Function Documentation

add_blob()

void TO_ROW::add_blob	(	BLOBNBOX *	blob,
		float	top,
		float	bottom,
		float	row_size
	)

Definition at line 728 of file blobbox.cpp.

                       {
  float allowed;                 //allowed expansion
  float available;               //expansion
  BLOBNBOX_IT it = &blobs;       //list of blobs

  it.add_to_end (blob);
  allowed = row_size + y_min - y_max;
  if (allowed > 0) {
    available = top > y_max ? top - y_max : 0;
    if (bottom < y_min)
                                 //total available
        available += y_min - bottom;
    if (available > 0) {
      available += available;    //do it gradually
      if (available < allowed)
        available = allowed;
      if (bottom < y_min)
        y_min -= (y_min - bottom) * allowed / available;
      if (top > y_max)
        y_max += (top - y_max) * allowed / available;
    }
  }
}

believability()

float TO_ROW::believability ( ) const

inline

Definition at line 581 of file blobbox.h.

                                {  //baseline goodness
      return credibility;
    }

blob_list()

BLOBNBOX_LIST* TO_ROW::blob_list ( )

inline

Definition at line 595 of file blobbox.h.

                               {  //get list
      return &blobs;
    }

clear_rep_chars_marked()

void TO_ROW::clear_rep_chars_marked ( )

inline

Definition at line 630 of file blobbox.h.

                                  {
      num_repeated_sets_ = -1;
    }

compute_vertical_projection()

void TO_ROW::compute_vertical_projection

(

)

Definition at line 791 of file blobbox.cpp.

                                         {  //project whole row
  TBOX row_box;                   //bound of row
  BLOBNBOX *blob;                //current blob
  TBOX blob_box;                  //bounding box
  BLOBNBOX_IT blob_it = blob_list ();

  if (blob_it.empty ())
    return;
  row_box = blob_it.data ()->bounding_box ();
  for (blob_it.mark_cycle_pt (); !blob_it.cycled_list (); blob_it.forward ())
    row_box += blob_it.data ()->bounding_box ();

  projection.set_range (row_box.left () - PROJECTION_MARGIN,
    row_box.right () + PROJECTION_MARGIN);
  projection_left = row_box.left () - PROJECTION_MARGIN;
  projection_right = row_box.right () + PROJECTION_MARGIN;
  for (blob_it.mark_cycle_pt (); !blob_it.cycled_list (); blob_it.forward ()) {
    blob = blob_it.data();
    if (blob->cblob() != NULL)
      vertical_cblob_projection(blob->cblob(), &projection);
  }
}

initial_min_y()

float TO_ROW::initial_min_y ( ) const

inline

Definition at line 563 of file blobbox.h.

                                {
      return initial_y_min;
    }

insert_blob()

void TO_ROW::insert_blob

(

BLOBNBOX *

blob

)

Definition at line 764 of file blobbox.cpp.

                          {
  BLOBNBOX_IT it = &blobs;       //list of blobs

  if (it.empty ())
    it.add_before_then_move (blob);
  else {
    it.mark_cycle_pt ();
    while (!it.cycled_list ()
      && it.data ()->bounding_box ().left () <=
      blob->bounding_box ().left ())
      it.forward ();
    if (it.cycled_list ())
      it.add_to_end (blob);
    else
      it.add_before_stay_put (blob);
  }
}

intercept()

float TO_ROW::intercept ( ) const

inline

Definition at line 584 of file blobbox.h.

                            {  //real parallel_c
      return y_origin;
    }

line_c()

float TO_ROW::line_c ( ) const

inline

Definition at line 569 of file blobbox.h.

                         {
      return c;
    }

line_error()

float TO_ROW::line_error ( ) const

inline

Definition at line 572 of file blobbox.h.

                             {
      return error;
    }

line_m()

float TO_ROW::line_m ( ) const

inline

Definition at line 566 of file blobbox.h.

                         {  //access to line fit
      return m;
    }

max_y()

float TO_ROW::max_y ( ) const

inline

Definition at line 554 of file blobbox.h.

                        {  //access function
      return y_max;
    }

mean_y()

float TO_ROW::mean_y ( ) const

inline

Definition at line 560 of file blobbox.h.

                         {
      return (y_min + y_max) / 2.0f;
    }

min_y()

float TO_ROW::min_y ( ) const

inline

Definition at line 557 of file blobbox.h.

                        {
      return y_min;
    }

num_repeated_sets()

int TO_ROW::num_repeated_sets ( ) const

inline

Definition at line 633 of file blobbox.h.

                                  {
      return num_repeated_sets_;
    }

parallel_c()

float TO_ROW::parallel_c ( ) const

inline

Definition at line 575 of file blobbox.h.

                             {
      return para_c;
    }

parallel_error()

float TO_ROW::parallel_error ( ) const

inline

Definition at line 578 of file blobbox.h.

                                 {
      return para_error;
    }

print()

void TO_ROW::print

(

)

const

Definition at line 712 of file blobbox.cpp.

                         {
  tprintf("pitch=%d, fp=%g, fps=%g, fpns=%g, prs=%g, prns=%g,"
          " spacing=%g xh=%g y_origin=%g xev=%d, asc=%g, desc=%g,"
          " body=%g, minsp=%d maxnsp=%d, thr=%d kern=%g sp=%g\n",
          pitch_decision, fixed_pitch, fp_space, fp_nonsp, pr_space, pr_nonsp,
          spacing, xheight, y_origin, xheight_evidence, ascrise, descdrop,
          body_size, min_space, max_nonspace, space_threshold, kern_size,
          space_size);
}

rep_chars_marked()

bool TO_ROW::rep_chars_marked ( ) const

inline

Definition at line 627 of file blobbox.h.

                                  {
      return num_repeated_sets_ != -1;
    }

set_limits()

void TO_ROW::set_limits ( float  new_min, float  new_max  )

inline

Definition at line 618 of file blobbox.h.

                                   {  //top of row
      y_min = new_min;
      y_max = new_max;
    }

set_line()

void TO_ROW::set_line ( float  new_m, float  new_c, float  new_error  )

inline

Definition at line 599 of file blobbox.h.

                                   {
      m = new_m;
      c = new_c;
      error = new_error;
    }

set_num_repeated_sets()

void TO_ROW::set_num_repeated_sets ( int  num_sets )

inline

Definition at line 636 of file blobbox.h.

                                             {
      num_repeated_sets_ = num_sets;
    }

set_parallel_line()

void TO_ROW::set_parallel_line ( float  gradient, float  new_c, float  new_error  )

inline

Definition at line 607 of file blobbox.h.

                                            {
      para_c = new_c;
      para_error = new_error;
      credibility =
        (float) (blobs.length () - kErrorWeight * new_error);
      y_origin = (float) (new_c / sqrt (1 + gradient * gradient));
      //real intercept
    }

Member Data Documentation

all_caps

BOOL8 TO_ROW::all_caps

Definition at line 642 of file blobbox.h.

ascrise

float TO_ROW::ascrise

Definition at line 655 of file blobbox.h.

baseline

QSPLINE TO_ROW::baseline

Definition at line 666 of file blobbox.h.

body_size

float TO_ROW::body_size

Definition at line 657 of file blobbox.h.

char_cells

ICOORDELT_LIST TO_ROW::char_cells

Definition at line 665 of file blobbox.h.

descdrop

float TO_ROW::descdrop

Definition at line 656 of file blobbox.h.

fixed_pitch

float TO_ROW::fixed_pitch

Definition at line 647 of file blobbox.h.

fp_nonsp

float TO_ROW::fp_nonsp

Definition at line 649 of file blobbox.h.

fp_space

float TO_ROW::fp_space

Definition at line 648 of file blobbox.h.

kern_size

float TO_ROW::kern_size

Definition at line 662 of file blobbox.h.

kErrorWeight

const int TO_ROW::kErrorWeight = 3

static

Definition at line 542 of file blobbox.h.

max_nonspace

inT32 TO_ROW::max_nonspace

Definition at line 660 of file blobbox.h.

merged

BOOL8 TO_ROW::merged

Definition at line 641 of file blobbox.h.

min_space

inT32 TO_ROW::min_space

Definition at line 659 of file blobbox.h.

pitch_decision

PITCH_TYPE TO_ROW::pitch_decision

Definition at line 646 of file blobbox.h.

pr_nonsp

float TO_ROW::pr_nonsp

Definition at line 651 of file blobbox.h.

pr_space

float TO_ROW::pr_space

Definition at line 650 of file blobbox.h.

projection

STATS TO_ROW::projection

Definition at line 667 of file blobbox.h.

projection_left

inT16 TO_ROW::projection_left

Definition at line 644 of file blobbox.h.

projection_right

inT16 TO_ROW::projection_right

Definition at line 645 of file blobbox.h.

rep_words

WERD_LIST TO_ROW::rep_words

Definition at line 664 of file blobbox.h.

space_size

float TO_ROW::space_size

Definition at line 663 of file blobbox.h.

space_threshold

inT32 TO_ROW::space_threshold

Definition at line 661 of file blobbox.h.

spacing

float TO_ROW::spacing

Definition at line 652 of file blobbox.h.

used_dm_model

BOOL8 TO_ROW::used_dm_model

Definition at line 643 of file blobbox.h.

xheight

float TO_ROW::xheight

Definition at line 653 of file blobbox.h.

xheight_evidence

int TO_ROW::xheight_evidence

Definition at line 654 of file blobbox.h.

---

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

• /home/stefan/src/github/tesseract-ocr/tesseract/ccstruct/blobbox.h
• /home/stefan/src/github/tesseract-ocr/tesseract/ccstruct/blobbox.cpp