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/*****************************************************************************************
* Copyright (c) 2007 Hewlett-Packard Development Company, L.P.
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*****************************************************************************************/
/************************************************************************
* SVN MACROS
*
* $LastChangedDate: 2008-07-10 15:23:21 +0530 (Thu, 10 Jul 2008) $
* $Revision: 556 $
* $Author: sharmnid $
*
************************************************************************/
/************************************************************************
* FILE DESCR: The abstract class for a word recognizer
*
* CONTENTS:
*
* AUTHOR: Deepu V.
*
* DATE: March 10, 2005
* CHANGE HISTORY:
* Author Date Description of change
************************************************************************/
#ifndef __LTKWORDRECOGNIZER_H
#define __LTKWORDRECOGNIZER_H
#include "LTKTypes.h"
#include "LTKInc.h"
#include "LTKTraceGroup.h"
class LTKRecognitionContext;
/**
* @class LTKWordFeatureExtractor
* <p> This is an abstract class. This contains the interface definitions of a wordrecognizer</p>
*/
class LTKWordRecognizer
{
protected:
const string m_wordRecognizerName; // name of the word recognizer class deriving from the LTKShapeRecognizer class
public:
/**
* @name Constructors and Destructor
*/
// @{
/**
* Default Constructor
*/
LTKWordRecognizer()
{
}
/**
* Initialization Constructor. Initialzes the member m_shapeRecognizerName
*/
LTKWordRecognizer(const string& wordRecognizerName):
m_wordRecognizerName(wordRecognizerName)
{
}
/**
* Virtual Destructor
*/
virtual ~LTKWordRecognizer()
{
}
// @}
/**
* This is a pure virtual method to be implemented by the derived class.
* This method is called from recognition context whenever new traces
* are added to it. The Recognizer need to process the new traces
* in this methods and updates the internal state.
* @param rc The recognition context for the current recognition
*/
//virtual int processInk (const LTKRecognitionContext& rc) = 0;
virtual int processInk (LTKRecognitionContext& rc) = 0;
/**
* This is a pure virtual method to be implemented by the derived class.
* This function notifies the recognizer that end of current ink is
* the end of a logic segment. This information could be used in
* constraining the recognizer choices
*/
virtual void endRecoUnit () = 0;
/**
* This is a pure virtual method to be implemented by the derived class.
* This is the recognize call. In case of trace by trace recognition
* The results of the recognition is set on the Recognition context
* object.
* @param rc The recognition context for the current recognition
*/
// virtual int recognize (const LTKRecognitionContext& rc) = 0;
virtual int recognize (LTKRecognitionContext& rc) = 0;
/**
* This is a pure virtual method to be implemented by the derived class.
* This method reset the recognizer.
* @param resetParam This parameter could specify what to reset
*/
virtual int reset (int resetParam = 0) = 0;
/**
* This method unloads all the training data
* To re-initialize the recognizer call the
* API initialize again
*/
virtual int unloadModelData() =0;
};
#endif // #ifndef __LTKWORDRECOGNIZER_H
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