tesseract 4.1.1
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tesseract::BoxWord Class Reference

#include <boxword.h>

Public Member Functions

 BoxWord ()
 
 BoxWord (const BoxWord &src)
 
 ~BoxWord ()=default
 
BoxWordoperator= (const BoxWord &src)
 
void CopyFrom (const BoxWord &src)
 
void ClipToOriginalWord (const BLOCK *block, WERD *original_word)
 
void MergeBoxes (int start, int end)
 
void InsertBox (int index, const TBOX &box)
 
void ChangeBox (int index, const TBOX &box)
 
void DeleteBox (int index)
 
void DeleteAllBoxes ()
 
void ProcessMatchedBlobs (const TWERD &other, TessCallback1< int > *cb) const
 
const TBOXbounding_box () const
 
int length () const
 
const TBOXBlobBox (int index) const
 

Static Public Member Functions

static BoxWordCopyFromNormalized (TWERD *tessword)
 

Detailed Description

Definition at line 37 of file boxword.h.

Constructor & Destructor Documentation

◆ BoxWord() [1/2]

tesseract::BoxWord::BoxWord ( )

Definition at line 33 of file boxword.cpp.

33 : length_(0) {
34}

◆ BoxWord() [2/2]

tesseract::BoxWord::BoxWord ( const BoxWord src)
explicit

Definition at line 36 of file boxword.cpp.

36 {
37 CopyFrom(src);
38}
void CopyFrom(const BoxWord &src)
Definition: boxword.cpp:45

◆ ~BoxWord()

tesseract::BoxWord::~BoxWord ( )
default

Member Function Documentation

◆ BlobBox()

const TBOX & tesseract::BoxWord::BlobBox ( int  index) const
inline

Definition at line 84 of file boxword.h.

84 {
85 return boxes_[index];
86 }

◆ bounding_box()

const TBOX & tesseract::BoxWord::bounding_box ( ) const
inline

Definition at line 80 of file boxword.h.

80 {
81 return bbox_;
82 }

◆ ChangeBox()

void tesseract::BoxWord::ChangeBox ( int  index,
const TBOX box 
)

Definition at line 159 of file boxword.cpp.

159 {
160 boxes_[index] = box;
161 ComputeBoundingBox();
162}

◆ ClipToOriginalWord()

void tesseract::BoxWord::ClipToOriginalWord ( const BLOCK block,
WERD original_word 
)

Definition at line 92 of file boxword.cpp.

92 {
93 for (int i = 0; i < length_; ++i) {
94 TBOX box = boxes_[i];
95 // Expand by a single pixel, as the poly approximation error is 1 pixel.
96 box = TBOX(box.left() - 1, box.bottom() - 1,
97 box.right() + 1, box.top() + 1);
98 // Now find the original box that matches.
99 TBOX original_box;
100 C_BLOB_IT b_it(original_word->cblob_list());
101 for (b_it.mark_cycle_pt(); !b_it.cycled_list(); b_it.forward()) {
102 TBOX blob_box = b_it.data()->bounding_box();
103 if (block != nullptr)
104 blob_box.rotate(block->re_rotation());
105 if (blob_box.major_overlap(box)) {
106 original_box += blob_box;
107 }
108 }
109 if (!original_box.null_box()) {
110 if (NearlyEqual<int>(original_box.left(), box.left(), kBoxClipTolerance))
111 box.set_left(original_box.left());
112 if (NearlyEqual<int>(original_box.right(), box.right(),
114 box.set_right(original_box.right());
115 if (NearlyEqual<int>(original_box.top(), box.top(), kBoxClipTolerance))
116 box.set_top(original_box.top());
117 if (NearlyEqual<int>(original_box.bottom(), box.bottom(),
119 box.set_bottom(original_box.bottom());
120 }
121 original_box = original_word->bounding_box();
122 if (block != nullptr)
123 original_box.rotate(block->re_rotation());
124 boxes_[i] = box.intersection(original_box);
125 }
126 ComputeBoundingBox();
127}
const int kBoxClipTolerance
Definition: boxword.cpp:31
FCOORD re_rotation() const
Definition: ocrblock.h:134
Definition: rect.h:34
void set_right(int x)
Definition: rect.h:82
void rotate(const FCOORD &vec)
Definition: rect.h:197
int16_t top() const
Definition: rect.h:58
void set_bottom(int y)
Definition: rect.h:68
bool major_overlap(const TBOX &box) const
Definition: rect.h:368
void set_top(int y)
Definition: rect.h:61
int16_t left() const
Definition: rect.h:72
int16_t bottom() const
Definition: rect.h:65
TBOX intersection(const TBOX &box) const
Definition: rect.cpp:87
bool null_box() const
Definition: rect.h:50
void set_left(int x)
Definition: rect.h:75
int16_t right() const
Definition: rect.h:79
C_BLOB_LIST * cblob_list()
Definition: werd.h:95
TBOX bounding_box() const
Definition: werd.cpp:148

◆ CopyFrom()

void tesseract::BoxWord::CopyFrom ( const BoxWord src)

Definition at line 45 of file boxword.cpp.

45 {
46 bbox_ = src.bbox_;
47 length_ = src.length_;
48 boxes_.clear();
49 boxes_.reserve(length_);
50 for (int i = 0; i < length_; ++i)
51 boxes_.push_back(src.boxes_[i]);
52}
int push_back(T object)
void reserve(int size)

◆ CopyFromNormalized()

BoxWord * tesseract::BoxWord::CopyFromNormalized ( TWERD tessword)
static

Definition at line 56 of file boxword.cpp.

56 {
57 auto* boxword = new BoxWord();
58 // Count the blobs.
59 boxword->length_ = tessword->NumBlobs();
60 // Allocate memory.
61 boxword->boxes_.reserve(boxword->length_);
62
63 for (int b = 0; b < boxword->length_; ++b) {
64 TBLOB* tblob = tessword->blobs[b];
65 TBOX blob_box;
66 for (TESSLINE* outline = tblob->outlines; outline != nullptr;
67 outline = outline->next) {
68 EDGEPT* edgept = outline->loop;
69 // Iterate over the edges.
70 do {
71 if (!edgept->IsHidden() || !edgept->prev->IsHidden()) {
72 ICOORD pos(edgept->pos.x, edgept->pos.y);
73 TPOINT denormed;
74 tblob->denorm().DenormTransform(nullptr, edgept->pos, &denormed);
75 pos.set_x(denormed.x);
76 pos.set_y(denormed.y);
77 TBOX pt_box(pos, pos);
78 blob_box += pt_box;
79 }
80 edgept = edgept->next;
81 } while (edgept != outline->loop);
82 }
83 boxword->boxes_.push_back(blob_box);
84 }
85 boxword->ComputeBoundingBox();
86 return boxword;
87}
Definition: blobs.h:51
int16_t x
Definition: blobs.h:93
int16_t y
Definition: blobs.h:94
Definition: blobs.h:99
EDGEPT * next
Definition: blobs.h:192
bool IsHidden() const
Definition: blobs.h:176
EDGEPT * prev
Definition: blobs.h:193
TPOINT pos
Definition: blobs.h:186
TESSLINE * next
Definition: blobs.h:281
Definition: blobs.h:284
TESSLINE * outlines
Definition: blobs.h:400
const DENORM & denorm() const
Definition: blobs.h:363
int NumBlobs() const
Definition: blobs.h:448
GenericVector< TBLOB * > blobs
Definition: blobs.h:459
void DenormTransform(const DENORM *last_denorm, const TPOINT &pt, TPOINT *original) const
Definition: normalis.cpp:390
integer coordinate
Definition: points.h:32

◆ DeleteAllBoxes()

void tesseract::BoxWord::DeleteAllBoxes ( )

Definition at line 174 of file boxword.cpp.

174 {
175 length_ = 0;
176 boxes_.clear();
177 bbox_ = TBOX();
178}

◆ DeleteBox()

void tesseract::BoxWord::DeleteBox ( int  index)

Definition at line 166 of file boxword.cpp.

166 {
167 ASSERT_HOST(0 <= index && index < length_);
168 boxes_.remove(index);
169 --length_;
170 ComputeBoundingBox();
171}
#define ASSERT_HOST(x)
Definition: errcode.h:88
void remove(int index)

◆ InsertBox()

void tesseract::BoxWord::InsertBox ( int  index,
const TBOX box 
)

Definition at line 148 of file boxword.cpp.

148 {
149 if (index < length_)
150 boxes_.insert(box, index);
151 else
152 boxes_.push_back(box);
153 length_ = boxes_.size();
154 ComputeBoundingBox();
155}
int size() const
Definition: genericvector.h:72
void insert(const T &t, int index)

◆ length()

int tesseract::BoxWord::length ( ) const
inline

Definition at line 83 of file boxword.h.

83{ return length_; }

◆ MergeBoxes()

void tesseract::BoxWord::MergeBoxes ( int  start,
int  end 
)

Definition at line 131 of file boxword.cpp.

131 {
132 start = ClipToRange(start, 0, length_);
133 end = ClipToRange(end, 0, length_);
134 if (end <= start + 1)
135 return;
136 for (int i = start + 1; i < end; ++i) {
137 boxes_[start] += boxes_[i];
138 }
139 int shrinkage = end - 1 - start;
140 length_ -= shrinkage;
141 for (int i = start + 1; i < length_; ++i)
142 boxes_[i] = boxes_[i + shrinkage];
143 boxes_.truncate(length_);
144}
T ClipToRange(const T &x, const T &lower_bound, const T &upper_bound)
Definition: helpers.h:108
void truncate(int size)

◆ operator=()

BoxWord & tesseract::BoxWord::operator= ( const BoxWord src)

Definition at line 40 of file boxword.cpp.

40 {
41 CopyFrom(src);
42 return *this;
43}

◆ ProcessMatchedBlobs()

void tesseract::BoxWord::ProcessMatchedBlobs ( const TWERD other,
TessCallback1< int > *  cb 
) const

Definition at line 190 of file boxword.cpp.

191 {
192 for (int i = 0; i < length_ && i < other.NumBlobs(); ++i) {
193 TBOX blob_box = other.blobs[i]->bounding_box();
194 if (blob_box == boxes_[i])
195 cb->Run(i);
196 }
197 delete cb;
198}
virtual void Run(A1)=0

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