tesseract::EquationDetectBase Class Reference

#include <equationdetectbase.h>

Inheritance diagram for tesseract::EquationDetectBase:

Public Member Functions
	EquationDetectBase ()=default
virtual	~EquationDetectBase ()
virtual int	LabelSpecialText (TO_BLOCK *to_block)=0
virtual int	FindEquationParts (ColPartitionGrid *part_grid, ColPartitionSet **best_columns)=0

Static Public Member Functions
static void	RenderSpecialText (Pix *pix, BLOBNBOX *blob)

Detailed Description

Definition at line 32 of file equationdetectbase.h.

Constructor & Destructor Documentation

EquationDetectBase()

tesseract::EquationDetectBase::EquationDetectBase ( )

default

~EquationDetectBase()

tesseract::EquationDetectBase::~EquationDetectBase ( )

virtualdefault

Member Function Documentation

FindEquationParts()

virtual int tesseract::EquationDetectBase::FindEquationParts ( ColPartitionGrid *  part_grid, ColPartitionSet **  best_columns  )

pure virtual

Implemented in tesseract::EquationDetect.

LabelSpecialText()

virtual int tesseract::EquationDetectBase::LabelSpecialText ( TO_BLOCK *  to_block )

pure virtual

Implemented in tesseract::EquationDetect.

RenderSpecialText()

void tesseract::EquationDetectBase::RenderSpecialText ( Pix *  pix, BLOBNBOX *  blob  )

static

Definition at line 31 of file equationdetectbase.cpp.

                                                           {
  ASSERT_HOST(pix != nullptr && pixGetDepth(pix) == 32 && blob != nullptr);
  const TBOX& tbox = blob->bounding_box();
  int height = pixGetHeight(pix);
  const int box_width = 5;

  // Coordinate translation: tesseract use left bottom as the original, while
  // leptonica uses left top as the original.
  Box *box = boxCreate(tbox.left(), height - tbox.top(),
                         tbox.width(), tbox.height());
  switch (blob->special_text_type()) {
    case BSTT_MATH:  // Red box.
      pixRenderBoxArb(pix, box, box_width, 255, 0, 0);
      break;
    case BSTT_DIGIT:  // cyan box.
      pixRenderBoxArb(pix, box, box_width, 0, 255, 255);
      break;
    case BSTT_ITALIC:  // Green box.
      pixRenderBoxArb(pix, box, box_width, 0, 255, 0);
      break;
    case BSTT_UNCLEAR:  // blue box.
      pixRenderBoxArb(pix, box, box_width, 0, 255, 0);
      break;
    case BSTT_NONE:
    default:
      // yellow box.
      pixRenderBoxArb(pix, box, box_width, 255, 255, 0);
      break;
  }
  boxDestroy(&box);
}

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

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