FPSEGPT Class Reference

#include <pitsync1.h>

Inheritance diagram for FPSEGPT:

Public Member Functions
	FPSEGPT ()=default
	FPSEGPT (int16_t x)
	FPSEGPT (int16_t x, BOOL8 faking, int16_t offset, int16_t region_index, int16_t pitch, int16_t pitch_error, FPSEGPT_LIST *prev_list)
	FPSEGPT (FPCUTPT *cutpt)
int32_t	position ()
double	cost_function ()
double	squares ()
double	sum ()
FPSEGPT *	previous ()
int16_t	cheap_cuts () const
Public Member Functions inherited from ELIST_LINK
	ELIST_LINK ()
	ELIST_LINK (const ELIST_LINK &)
void	operator= (const ELIST_LINK &)

Public Attributes
BOOL8	faked
BOOL8	terminal
int16_t	fake_count

Detailed Description

Definition at line 32 of file pitsync1.h.

Constructor & Destructor Documentation

FPSEGPT() [1/4]

FPSEGPT::FPSEGPT ( )

default

FPSEGPT() [2/4]

FPSEGPT::FPSEGPT

(

int16_t

x

)

Definition at line 60 of file pitsync1.cpp.

 :xpos (x) {
  pred = nullptr;
  mean_sum = 0;
  sq_sum = 0;
  cost = 0;
  faked = FALSE;
  terminal = FALSE;
  fake_count = 0;
  mid_cuts = 0;
}

FPSEGPT() [3/4]

FPSEGPT::FPSEGPT	(	int16_t	x,
		BOOL8	faking,
		int16_t	offset,
		int16_t	region_index,
		int16_t	pitch,
		int16_t	pitch_error,
		FPSEGPT_LIST *	prev_list
	)

Definition at line 80 of file pitsync1.cpp.

: fake_count(0),
  xpos(x),
  mean_sum(0.0),
  sq_sum(0.0)
{
  int16_t best_fake;             //on previous
  FPSEGPT *segpt;                //segment point
  int32_t dist;                  //from prev segment
  double sq_dist;                //squared distance
  double mean;                   //mean pitch
  double total;                  //total dists
  double factor;                 //cost function
  FPSEGPT_IT pred_it = prev_list;//for previuos segment

  cost = FLT_MAX;
  pred = nullptr;
  faked = faking;
  terminal = FALSE;
  best_fake = INT16_MAX;
  mid_cuts = 0;
  for (pred_it.mark_cycle_pt (); !pred_it.cycled_list (); pred_it.forward ()) {
    segpt = pred_it.data ();
    if (segpt->fake_count < best_fake)
      best_fake = segpt->fake_count;
    dist = x - segpt->xpos;
    if (dist >= pitch - pitch_error && dist <= pitch + pitch_error
    && !segpt->terminal) {
      total = segpt->mean_sum + dist;
      sq_dist = dist * dist + segpt->sq_sum + offset * offset;
      //sum of squarees
      mean = total / region_index;
      factor = mean - pitch;
      factor *= factor;
      factor += sq_dist / (region_index) - mean * mean;
      if (factor < cost) {
        cost = factor;           //find least cost
        pred = segpt;            //save path
        mean_sum = total;
        sq_sum = sq_dist;
        fake_count = segpt->fake_count + faked;
      }
    }
  }
  if (fake_count > best_fake + 1)
    pred = nullptr;                 //fail it
}

FPSEGPT() [4/4]

FPSEGPT::FPSEGPT

(

FPCUTPT *

cutpt

)

Definition at line 39 of file pitsync1.cpp.

                  {
  pred = nullptr;
  mean_sum = cutpt->sum ();
  sq_sum = cutpt->squares ();
  cost = cutpt->cost_function ();
  faked = cutpt->faked;
  terminal = cutpt->terminal;
  fake_count = cutpt->fake_count;
  xpos = cutpt->position ();
  mid_cuts = cutpt->cheap_cuts ();
}

Member Function Documentation

cheap_cuts()

int16_t FPSEGPT::cheap_cuts ( ) const

inline

Definition at line 63 of file pitsync1.h.

                               {  //no of cheap cuts
      return mid_cuts;
    }

cost_function()

double FPSEGPT::cost_function ( )

inline

Definition at line 51 of file pitsync1.h.

                           {
      return cost;
    }

position()

int32_t FPSEGPT::position ( )

inline

Definition at line 48 of file pitsync1.h.

                       {  // access func
      return xpos;
    }

previous()

FPSEGPT* FPSEGPT::previous ( )

inline

Definition at line 60 of file pitsync1.h.

                        {
      return pred;
    }

squares()

double FPSEGPT::squares ( )

inline

Definition at line 54 of file pitsync1.h.

                     {
      return sq_sum;
    }

sum()

double FPSEGPT::sum ( )

inline

Definition at line 57 of file pitsync1.h.

                 {
      return mean_sum;
    }

Member Data Documentation

fake_count

int16_t FPSEGPT::fake_count

Definition at line 70 of file pitsync1.h.

faked

BOOL8 FPSEGPT::faked

Definition at line 68 of file pitsync1.h.

terminal

BOOL8 FPSEGPT::terminal

Definition at line 69 of file pitsync1.h.

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

• /usr/src/tesseract-ocr.master/src/textord/pitsync1.h
• /usr/src/tesseract-ocr.master/src/textord/pitsync1.cpp