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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: 2008-07-18 15:00:39 +0530 (Fri, 18 Jul 2008) $
* $Revision: 561 $
* $Author: sharmnid $
*
************************************************************************/
/************************************************************************
* FILE DESCR: Definition of LTKShapeRecoEngine which has the interface to the shape recognition engine
*
* CONTENTS:
*
* AUTHOR: Balaji R.
*
* DATE: December 23, 2004
* CHANGE HISTORY:
* Author Date Description of change
************************************************************************/
#ifndef __LTKShapeRecoEngine_H
#define __LTKShapeRecoEngine_H
#include "LTKShapeRecognizer.h"
#include "LTKTraceGroup.h"
#include "LTKShapeRecoResult.h"
#include "LTKScreenContext.h"
#include "LTKCaptureDevice.h"
/**
* @class LTKShapeRecoEngine
* <p> This class provides the interface to the Shape Recognition Engine.
* The required shape recognizer is instantiated dynamically and its corresponding
* recognize functions are called</p>
*/
class LTKShapeRecoEngine
{
private:
LTKShapeRecognizer* m_shapeRecognizer; // a pointer to a derived class of LTKShapeRecognizer
public:
/**
* @name Constructors and Destructor
*/
// @{
/**
* Default Constructor
*/
LTKShapeRecoEngine();
/**
* Destructor
*/
~LTKShapeRecoEngine();
// @}
/**
* @name Methods
*/
// @{
/**
* This method loads a shape recognizer with a particular profile for a particular
* recognition problem by using the information in the configuration file and the lipi tool
* kit root path passed to it as arguments
* @param configFileName The configuration file to load a shape recognizer
* @param lipiRoot root path of the lipi tool kit
*/
int initializeShapeRecoEngine(const string& configFileName, string lipiRoot = "");
/**
* This method calls the loadTrainingData method of the instantiated shape recognizer.
*/
int loadTrainingData();
/**
* This method calls the recognize method of the instantiated shape recognizer.
*
* @param traceGroupObj The co-ordinates of the shape which is to be recognized
* @param uiParams Contains information about the input field like whether it is boxed input
* or continuous writing
* @param deviceParams Contains information about the device like its sampling rate
* @param shapeSubSet A subset of the entire set of shapes which is to be used for
* recognizing the input shape.
* @param confThreshold A threshold on confidence value of the recognized shape. This is
* used as Rejection Criteria
* @param numOfChoices Number of top choices to be returned in the result structure
* @param results The result of recognition
*/
int recognize(const LTKTraceGroup& traceGroup, const LTKScreenContext& screenContext,
const LTKCaptureDevice& captureDevice, const vector<bool>& shapeSubSet, float confThreshold,
int numChoices, vector<LTKShapeRecoResult>& results);
/**
* This method calls the recognize method of the derived shape recognizer.
*
* @param traceGroup The co-ordinates of the shape which is to be recognized
* @param screenContext Contains information about the input field like whether it is boxed input
* or continuous writing
* @param captureDevice Contains information about the device like its sampling rate
* @param shapeIds A subset of the entire shape space for which shape recongizer confidences
* need to be computed
* @param shapeRecoConfidences the confidence values calculated by the recognizer
*/
int getShapeRecoConfidences(const LTKTraceGroup& traceGroup,
const LTKScreenContext& screenContext,const LTKCaptureDevice& captureDevice,
const vector<int>& shapeIds, vector<float>& shapeRecoConfidences);
/**
* This method calls the learn method of the instantiated shape recognizer.
*
* @param prototype The sample to be used for adaptation
* @param shapeId The shape id of the added prototype
* @param uiParams Contains information about the input field like whether it is boxed input
* or continuous writing
* @param deviceParams Contains information about the device like its sampling rate
*/
int learn(const LTKTraceGroup& prototype, int shapeId, const LTKScreenContext& screenContext,
const LTKCaptureDevice& captureDevice);
/**
* This method calls the train method of the instantiated shape recognizer.
* @param trainingList The name of the file containing the listing of files to be used for
* training each of the shapes.
*/
int train(const string& trainingList);
// @}
};
#endif
//#ifndef __LTKShapeRecoEngine_H
//#define __LTKShapeRecoEngine_H
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