tesseract  5.0.0
tesseract::EquationDetectBase Class Referenceabstract

#include <equationdetectbase.h>

Inheritance diagram for tesseract::EquationDetectBase:
tesseract::EquationDetect tesseract::TestableEquationDetect

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 (Image pix, BLOBNBOX *blob)
 

Detailed Description

Definition at line 35 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 ( Image  pix,
BLOBNBOX blob 
)
static

Definition at line 37 of file equationdetectbase.cpp.

37  {
38  ASSERT_HOST(pix != nullptr && pixGetDepth(pix) == 32 && blob != nullptr);
39  const TBOX &tbox = blob->bounding_box();
40  int height = pixGetHeight(pix);
41  const int box_width = 5;
42 
43  // Coordinate translation: tesseract use left bottom as the original, while
44  // leptonica uses left top as the original.
45  Box *box = boxCreate(tbox.left(), height - tbox.top(), tbox.width(), tbox.height());
46  switch (blob->special_text_type()) {
47  case BSTT_MATH: // Red box.
48  pixRenderBoxArb(pix, box, box_width, 255, 0, 0);
49  break;
50  case BSTT_DIGIT: // cyan box.
51  pixRenderBoxArb(pix, box, box_width, 0, 255, 255);
52  break;
53  case BSTT_ITALIC: // Green box.
54  pixRenderBoxArb(pix, box, box_width, 0, 255, 0);
55  break;
56  case BSTT_UNCLEAR: // blue box.
57  pixRenderBoxArb(pix, box, box_width, 0, 255, 0);
58  break;
59  case BSTT_NONE:
60  default:
61  // yellow box.
62  pixRenderBoxArb(pix, box, box_width, 255, 255, 0);
63  break;
64  }
65  boxDestroy(&box);
66 }
#define ASSERT_HOST(x)
Definition: errcode.h:59
@ TBOX
@ BSTT_MATH
Definition: blobbox.h:96
@ BSTT_UNCLEAR
Definition: blobbox.h:97
@ BSTT_DIGIT
Definition: blobbox.h:95
@ BSTT_ITALIC
Definition: blobbox.h:94
@ BSTT_NONE
Definition: blobbox.h:93

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