/usr/include/tesseract/boxword.h is in libtesseract-dev 3.02.01-2.
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// File: boxword.h
// Description: Class to represent the bounding boxes of the output.
// Author: Ray Smith
// Created: Tue May 25 14:18:14 PDT 2010
//
// (C) Copyright 2010, Google Inc.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
///////////////////////////////////////////////////////////////////////
#ifndef TESSERACT_CSTRUCT_BOXWORD_H__
#define TESSERACT_CSTRUCT_BOXWORD_H__
#include "genericvector.h"
#include "rect.h"
class BLOCK;
class DENORM;
class PBLOB_LIST;
struct TWERD;
class UNICHARSET;
class WERD;
class WERD_CHOICE;
class WERD_RES;
namespace tesseract {
// ScriptPos tells whether a character is subscript, superscript or normal.
enum ScriptPos {
SP_NORMAL,
SP_SUBSCRIPT,
SP_SUPERSCRIPT,
SP_DROPCAP
};
// Class to hold an array of bounding boxes for an output word and
// the bounding box of the whole word.
class BoxWord {
public:
BoxWord();
explicit BoxWord(const BoxWord& src);
~BoxWord();
BoxWord& operator=(const BoxWord& src);
void CopyFrom(const BoxWord& src);
// Factory to build a BoxWord from a TWERD and the DENORM to switch
// back to original image coordinates.
// If the denorm is not NULL, then the output is denormalized and rotated
// back to the original image coordinates.
static BoxWord* CopyFromNormalized(const DENORM* denorm,
TWERD* tessword);
// Sets up the script_pos_ member using the tessword to get the bln
// bounding boxes, the best_choice to get the unichars, and the unicharset
// to get the target positions. If small_caps is true, sub/super are not
// considered, but dropcaps are.
void SetScriptPositions(const UNICHARSET& unicharset, bool small_caps,
TWERD* tessword, WERD_CHOICE* best_choice);
// Clean up the bounding boxes from the polygonal approximation by
// expanding slightly, then clipping to the blobs from the original_word
// that overlap. If not null, the block provides the inverse rotation.
void ClipToOriginalWord(const BLOCK* block, WERD* original_word);
// Merges the boxes from start to end, not including end, and deletes
// the boxes between start and end.
void MergeBoxes(int start, int end);
// Inserts a new box before the given index.
// Recomputes the bounding box.
void InsertBox(int index, const TBOX& box);
// Deletes the box with the given index, and shuffles up the rest.
// Recomputes the bounding box.
void DeleteBox(int index);
// Deletes all the boxes stored in BoxWord.
void DeleteAllBoxes();
// This and other putatively are the same, so call the (permanent) callback
// for each blob index where the bounding boxes match.
// The callback is deleted on completion.
void ProcessMatchedBlobs(const TWERD& other, TessCallback1<int>* cb) const;
const TBOX& bounding_box() const {
return bbox_;
}
const int length() const {
return length_;
}
const TBOX& BlobBox(int index) const {
return boxes_[index];
}
ScriptPos BlobPosition(int index) const {
if (index < 0 || index >= script_pos_.size())
return SP_NORMAL;
return script_pos_[index];
}
private:
void ComputeBoundingBox();
TBOX bbox_;
int length_;
GenericVector<TBOX> boxes_;
GenericVector<ScriptPos> script_pos_;
};
} // namespace tesseract.
#endif // TESSERACT_CSTRUCT_BOXWORD_H__
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