mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-11-30 23:49:05 +08:00
4523ce9f7d
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@526 d0cd1f9f-072b-0410-8dd7-cf729c803f20
71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/**********************************************************************
|
|
* File: char_altlist.h
|
|
* Description: Declaration of a Character Alternate List Class
|
|
* 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.
|
|
*
|
|
**********************************************************************/
|
|
|
|
#ifndef CHAR_ALT_LIST_H
|
|
#define CHAR_ALT_LIST_H
|
|
|
|
// The CharAltList class holds the list of class alternates returned from
|
|
// a character classifier. Each alternate represents a class ID.
|
|
// It inherits from the AltList class.
|
|
// The CharAltList owns a CharSet object that maps a class-id to a string.
|
|
|
|
#include "altlist.h"
|
|
#include "char_set.h"
|
|
|
|
namespace tesseract {
|
|
class CharAltList : public AltList {
|
|
public:
|
|
CharAltList(const CharSet *char_set, int max_alt = kMaxCharAlt);
|
|
~CharAltList();
|
|
|
|
// Sort the alternate list based on cost
|
|
void Sort();
|
|
// insert a new alternate with the specified class-id, cost and tag
|
|
bool Insert(int class_id, int cost, void *tag = NULL);
|
|
// returns the cost of a specific class ID
|
|
inline int ClassCost(int class_id) const {
|
|
if (class_id_cost_ == NULL ||
|
|
class_id < 0 ||
|
|
class_id >= char_set_->ClassCount()) {
|
|
return WORST_COST;
|
|
}
|
|
return class_id_cost_[class_id];
|
|
}
|
|
// returns the alternate class-id corresponding to an alternate index
|
|
inline int Alt(int alt_idx) const { return class_id_alt_[alt_idx]; }
|
|
// set the cost of a certain alternate
|
|
void SetAltCost(int alt_idx, int cost) {
|
|
alt_cost_[alt_idx] = cost;
|
|
class_id_cost_[class_id_alt_[alt_idx]] = cost;
|
|
}
|
|
|
|
private:
|
|
// character set object. Passed at construction time
|
|
const CharSet *char_set_;
|
|
// array of alternate class-ids
|
|
int *class_id_alt_;
|
|
// array of alternate costs
|
|
int *class_id_cost_;
|
|
// default max count of alternates
|
|
static const int kMaxCharAlt = 256;
|
|
};
|
|
}
|
|
|
|
#endif // CHAR_ALT_LIST_H
|