tesseract::FPSEGPT Class Reference

#include <pitsync1.h>

Inheritance diagram for tesseract::FPSEGPT:

Public Member Functions
	FPSEGPT ()=default
	FPSEGPT (int16_t x)
	FPSEGPT (int16_t x, bool 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 tesseract::ELIST_LINK
	ELIST_LINK ()
	ELIST_LINK (const ELIST_LINK &)
void	operator= (const ELIST_LINK &)

Public Attributes
bool	faked
bool	terminal
int16_t	fake_count

Detailed Description

Definition at line 34 of file pitsync1.h.

Constructor & Destructor Documentation

FPSEGPT() [1/4]

tesseract::FPSEGPT::FPSEGPT ( )

default

FPSEGPT() [2/4]

tesseract::FPSEGPT::FPSEGPT

(

int16_t

x

)

Definition at line 57 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]

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

Definition at line 77 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]

tesseract::FPSEGPT::FPSEGPT

(

FPCUTPT *

cutpt

)

Definition at line 37 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 tesseract::FPSEGPT::cheap_cuts ( ) const

inline

Definition at line 64 of file pitsync1.h.

                             { // no of cheap cuts
    return mid_cuts;
  }

cost_function()

double tesseract::FPSEGPT::cost_function ( )

inline

Definition at line 52 of file pitsync1.h.

                         {
    return cost;
  }

position()

int32_t tesseract::FPSEGPT::position ( )

inline

Definition at line 49 of file pitsync1.h.

                     { // access func
    return xpos;
  }

previous()

FPSEGPT * tesseract::FPSEGPT::previous ( )

inline

Definition at line 61 of file pitsync1.h.

                      {
    return pred;
  }

squares()

double tesseract::FPSEGPT::squares ( )

inline

Definition at line 55 of file pitsync1.h.

                   {
    return sq_sum;
  }

sum()

double tesseract::FPSEGPT::sum ( )

inline

Definition at line 58 of file pitsync1.h.

               {
    return mean_sum;
  }

Member Data Documentation

fake_count

int16_t tesseract::FPSEGPT::fake_count

Definition at line 70 of file pitsync1.h.

faked

bool tesseract::FPSEGPT::faked

Definition at line 68 of file pitsync1.h.

terminal

bool tesseract::FPSEGPT::terminal

Definition at line 69 of file pitsync1.h.

---

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

• /media/home/debian/src/github/tesseract-ocr/tesseract/src/textord/pitsync1.h
• /media/home/debian/src/github/tesseract-ocr/tesseract/src/textord/pitsync1.cpp