mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-23 15:07:49 +08:00
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
|
/**********************************************************************
|
||
|
|
* File: alt_list.h
|
||
|
|
* Description: Class to abstarct a list of alternate results
|
||
|
|
* Author: Ahmad Abdulkader
|
||
|
|
* Created: 2007
|
||
|
|
*
|
||
|
|
* (C) Copyright 2008, 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.
|
||
|
|
*
|
||
|
|
**********************************************************************/
|
||
|
|
|
||
|
|
// The AltList class is the base class for the list of alternate recognition
|
||
|
|
// results. Each alternate has a cost an an optional tag associated with it
|
||
|
|
|
||
|
|
#ifndef ALT_LIST_H
|
||
|
|
#define ALT_LIST_H
|
||
|
|
|
||
|
|
#include <math.h>
|
||
|
|
#include "cube_utils.h"
|
||
|
|
|
||
|
|
namespace tesseract {
|
||
|
|
class AltList {
|
||
|
|
public:
|
||
|
|
explicit AltList(int max_alt);
|
||
|
|
virtual ~AltList();
|
||
|
|
// sort the list of alternates based
|
||
|
|
virtual void Sort() = 0;
|
||
|
|
// return the best possible cost and index of corresponding alternate
|
||
|
|
int BestCost (int *best_alt) const;
|
||
|
|
// return the count of alternates
|
||
|
|
inline int AltCount() const { return alt_cnt_; }
|
||
|
|
// returns the cost (-ve log prob) of an alternate
|
||
|
|
inline int AltCost(int alt_idx) const { return alt_cost_[alt_idx]; }
|
||
|
|
// returns the prob of an alternate
|
||
|
|
inline double AltProb(int alt_idx) const {
|
||
|
|
return CubeUtils::Cost2Prob(AltCost(alt_idx));
|
||
|
|
}
|
||
|
|
// returns the alternate tag
|
||
|
|
inline void *AltTag(int alt_idx) const { return alt_tag_[alt_idx]; }
|
||
|
|
|
||
|
|
protected:
|
||
|
|
// max number of alternates the list can hold
|
||
|
|
int max_alt_;
|
||
|
|
// actual alternate count
|
||
|
|
int alt_cnt_;
|
||
|
|
// array of alternate costs
|
||
|
|
int *alt_cost_;
|
||
|
|
// array of alternate tags
|
||
|
|
void **alt_tag_;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // ALT_LIST_H
|