mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-15 09:47:46 +08:00
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
|
///////////////////////////////////////////////////////////////////////
|
||
|
|
// File: equationdetectbase.h
|
||
|
|
// Description: The base class equation detection class.
|
||
|
|
// Author: Zongyi (Joe) Liu (joeliu@google.com)
|
||
|
|
// Created: Fri Aug 31 11:13:01 PST 2011
|
||
|
|
//
|
||
|
|
// (C) Copyright 2011, 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_TEXTORD_EQUATIONDETECTBASE_H__
|
||
|
|
#define TESSERACT_TEXTORD_EQUATIONDETECTBASE_H__
|
||
|
|
|
||
|
|
class BLOBNBOX_LIST;
|
||
|
|
class TO_BLOCK;
|
||
|
|
struct Pix;
|
||
|
|
|
||
|
|
namespace tesseract {
|
||
|
|
|
||
|
|
class ColPartitionGrid;
|
||
|
|
class ColPartitionSet;
|
||
|
|
|
||
|
|
class EquationDetectBase {
|
||
|
|
public:
|
||
|
|
EquationDetectBase();
|
||
|
|
virtual ~EquationDetectBase();
|
||
|
|
|
||
|
|
// Iterate over the blobs inside to_block, and set the blobs that we want to
|
||
|
|
// process to BSTT_NONE. (By default, they should be BSTT_SKIP). The function
|
||
|
|
// returns 0 upon success.
|
||
|
|
virtual int LabelSpecialText(TO_BLOCK* to_block) = 0;
|
||
|
|
|
||
|
|
// Interface to find possible equation partition grid from part_grid. This
|
||
|
|
// should be called after IdentifySpecialText function.
|
||
|
|
virtual int FindEquationParts(ColPartitionGrid* part_grid,
|
||
|
|
ColPartitionSet** best_columns) = 0;
|
||
|
|
|
||
|
|
// Debug function: Render a bounding box on pix based on the value of its
|
||
|
|
// special_text_type, specifically:
|
||
|
|
// BSTT_MATH: red box
|
||
|
|
// BSTT_DIGIT: cyan box
|
||
|
|
// BSTT_ITALIC: green box
|
||
|
|
// BSTT_UNCLEAR: blue box
|
||
|
|
// All others: yellow box
|
||
|
|
static void RenderSpecialText(Pix* pix, BLOBNBOX* blob);
|
||
|
|
};
|
||
|
|
|
||
|
|
}; // namespace tesseract
|
||
|
|
|
||
|
|
#endif // TESSERACT_TEXTORD_EQUATIONDETECTBASE_H__
|