#include <blobbox.h>

Inheritance diagram for tesseract::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 tesseract::ELIST2_LINK
	ELIST2_LINK ()

	ELIST2_LINK (const ELIST2_LINK &)=delete

void	operator= (const ELIST2_LINK &)

Public Attributes
bool	merged = false

bool	all_caps

bool	used_dm_model

int16_t	projection_left

int16_t	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_t	min_space

int32_t	max_nonspace

int32_t	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 555 of file blobbox.h.

Constructor & Destructor Documentation

◆ TO_ROW() [1/2]

tesseract::TO_ROW::TO_ROW ( )

inline

Definition at line 559 of file blobbox.h.

            {
     clear();
   }                   // empty

◆ TO_ROW() [2/2]

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

Definition at line 690 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 tesseract::TO_ROW::add_blob	(	BLOBNBOX *	blob,
		float	top,
		float	bottom,
		float	row_size
	)

Definition at line 734 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 tesseract::TO_ROW::believability ( ) const

inline

Definition at line 595 of file blobbox.h.

                               { // baseline goodness
     return credibility;
   }

◆ blob_list()

BLOBNBOX_LIST* tesseract::TO_ROW::blob_list ( )

inline

Definition at line 608 of file blobbox.h.

                              { // get list
     return &blobs;
   }

◆ clear_rep_chars_marked()

void tesseract::TO_ROW::clear_rep_chars_marked ( )

inline

Definition at line 640 of file blobbox.h.

                                 {
     num_repeated_sets_ = -1;
   }

◆ compute_vertical_projection()

void tesseract::TO_ROW::compute_vertical_projection ( )

Definition at line 799 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() != nullptr) {
       vertical_cblob_projection(blob->cblob(), &projection);
     }
   }
 }

◆ initial_min_y()

float tesseract::TO_ROW::initial_min_y ( ) const

inline

Definition at line 577 of file blobbox.h.

                               {
     return initial_y_min;
   }

◆ insert_blob()

void tesseract::TO_ROW::insert_blob ( BLOBNBOX * blob )

Definition at line 773 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 tesseract::TO_ROW::intercept ( ) const

inline

Definition at line 598 of file blobbox.h.

                           { // real parallel_c
     return y_origin;
   }

◆ line_c()

float tesseract::TO_ROW::line_c ( ) const

inline

Definition at line 583 of file blobbox.h.

                        {
     return c;
   }

◆ line_error()

float tesseract::TO_ROW::line_error ( ) const

inline

Definition at line 586 of file blobbox.h.

                            {
     return error;
   }

◆ line_m()

float tesseract::TO_ROW::line_m ( ) const

inline

Definition at line 580 of file blobbox.h.

                        { // access to line fit
     return m;
   }

◆ max_y()

float tesseract::TO_ROW::max_y ( ) const

inline

Definition at line 568 of file blobbox.h.

                       { // access function
     return y_max;
   }

◆ mean_y()

float tesseract::TO_ROW::mean_y ( ) const

inline

Definition at line 574 of file blobbox.h.

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

◆ min_y()

float tesseract::TO_ROW::min_y ( ) const

inline

Definition at line 571 of file blobbox.h.

                       {
     return y_min;
   }

◆ num_repeated_sets()

int tesseract::TO_ROW::num_repeated_sets ( ) const

inline

Definition at line 643 of file blobbox.h.

                                 {
     return num_repeated_sets_;
   }

◆ parallel_c()

float tesseract::TO_ROW::parallel_c ( ) const

inline

Definition at line 589 of file blobbox.h.

                            {
     return para_c;
   }

◆ parallel_error()

float tesseract::TO_ROW::parallel_error ( ) const

inline

Definition at line 592 of file blobbox.h.

                                {
     return para_error;
   }

◆ print()

void tesseract::TO_ROW::print ( ) const

Definition at line 718 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 tesseract::TO_ROW::rep_chars_marked ( ) const

inline

Definition at line 637 of file blobbox.h.

                                 {
     return num_repeated_sets_ != -1;
   }

◆ set_limits()

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

inline

Definition at line 628 of file blobbox.h.

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

◆ set_line()

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

inline

Definition at line 612 of file blobbox.h.

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

◆ set_num_repeated_sets()

void tesseract::TO_ROW::set_num_repeated_sets ( int num_sets )

inline

Definition at line 646 of file blobbox.h.

                                            {
     num_repeated_sets_ = num_sets;
   }

◆ set_parallel_line()

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

inline

Definition at line 619 of file blobbox.h.

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

Member Data Documentation

◆ all_caps

bool tesseract::TO_ROW::all_caps

Definition at line 652 of file blobbox.h.

◆ ascrise

float tesseract::TO_ROW::ascrise

Definition at line 665 of file blobbox.h.

◆ baseline

QSPLINE tesseract::TO_ROW::baseline

Definition at line 676 of file blobbox.h.

◆ body_size

float tesseract::TO_ROW::body_size

Definition at line 667 of file blobbox.h.

◆ char_cells

ICOORDELT_LIST tesseract::TO_ROW::char_cells

Definition at line 675 of file blobbox.h.

◆ descdrop

float tesseract::TO_ROW::descdrop

Definition at line 666 of file blobbox.h.

◆ fixed_pitch

float tesseract::TO_ROW::fixed_pitch

Definition at line 657 of file blobbox.h.

◆ fp_nonsp

float tesseract::TO_ROW::fp_nonsp

Definition at line 659 of file blobbox.h.

◆ fp_space

float tesseract::TO_ROW::fp_space

Definition at line 658 of file blobbox.h.

◆ kern_size

float tesseract::TO_ROW::kern_size

Definition at line 672 of file blobbox.h.

◆ kErrorWeight

const int tesseract::TO_ROW::kErrorWeight = 3

static

Definition at line 557 of file blobbox.h.

◆ max_nonspace

int32_t tesseract::TO_ROW::max_nonspace

Definition at line 670 of file blobbox.h.

◆ merged

bool tesseract::TO_ROW::merged = false

Definition at line 651 of file blobbox.h.

◆ min_space

int32_t tesseract::TO_ROW::min_space

Definition at line 669 of file blobbox.h.

◆ pitch_decision

PITCH_TYPE tesseract::TO_ROW::pitch_decision

Definition at line 656 of file blobbox.h.

◆ pr_nonsp

float tesseract::TO_ROW::pr_nonsp

Definition at line 661 of file blobbox.h.

◆ pr_space

float tesseract::TO_ROW::pr_space

Definition at line 660 of file blobbox.h.

◆ projection

STATS tesseract::TO_ROW::projection

Definition at line 677 of file blobbox.h.

◆ projection_left

int16_t tesseract::TO_ROW::projection_left

Definition at line 654 of file blobbox.h.

◆ projection_right

int16_t tesseract::TO_ROW::projection_right

Definition at line 655 of file blobbox.h.

◆ rep_words

WERD_LIST tesseract::TO_ROW::rep_words

Definition at line 674 of file blobbox.h.

◆ space_size

float tesseract::TO_ROW::space_size

Definition at line 673 of file blobbox.h.

◆ space_threshold

int32_t tesseract::TO_ROW::space_threshold

Definition at line 671 of file blobbox.h.

◆ spacing

float tesseract::TO_ROW::spacing

Definition at line 662 of file blobbox.h.

◆ used_dm_model

bool tesseract::TO_ROW::used_dm_model

Definition at line 653 of file blobbox.h.

◆ xheight

float tesseract::TO_ROW::xheight

Definition at line 663 of file blobbox.h.

◆ xheight_evidence

int tesseract::TO_ROW::xheight_evidence

Definition at line 664 of file blobbox.h.

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

src/ccstruct/blobbox.h
src/ccstruct/blobbox.cpp

Public Member Functions

Public Attributes

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ TO_ROW() [1/2]

◆ TO_ROW() [2/2]

Member Function Documentation

◆ add_blob()

◆ believability()

◆ blob_list()

◆ clear_rep_chars_marked()

◆ compute_vertical_projection()

◆ initial_min_y()

◆ insert_blob()

◆ intercept()

◆ line_c()

◆ line_error()

◆ line_m()

◆ max_y()

◆ mean_y()

◆ min_y()

◆ num_repeated_sets()

◆ parallel_c()

◆ parallel_error()

◆ print()

◆ rep_chars_marked()

◆ set_limits()

◆ set_line()

◆ set_num_repeated_sets()

◆ set_parallel_line()

Member Data Documentation

◆ all_caps

◆ ascrise

◆ baseline

◆ body_size

◆ char_cells

◆ descdrop

◆ fixed_pitch

◆ fp_nonsp

◆ fp_space

◆ kern_size

◆ kErrorWeight

◆ max_nonspace

◆ merged

◆ min_space

◆ pitch_decision

◆ pr_nonsp

◆ pr_space

◆ projection

◆ projection_left

◆ projection_right

◆ rep_words

◆ space_size

◆ space_threshold

◆ spacing

◆ used_dm_model

◆ xheight

◆ xheight_evidence