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/*****************************************************************************************
* Copyright (c) 2006 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: 2008-02-20 10:03:51 +0530 (Wed, 20 Feb 2008) $
* $Revision: 423 $
* $Author: sharmnid $
*
************************************************************************/
#include "LTKShapeFeature.h"
/** @ingroup L7ShapeFeatureExtractor
* @brief The feature representation class for L7 features
* This class represents X and Y coordinates, Normalized X and Y First Derivatives, Normalized X and Y Second Derivatives and the Curvature values of a point.
* @class L7ShapeFeature
*
*/
class L7ShapeFeature : public LTKShapeFeature
{
/** @name private data members */
//@{
private:
/** @brief X value */
float m_x;
/** @brief Y value */
float m_y;
/** @brief Normalized First Derivative w.r.t X */
float m_xFirstDerv;
/** @brief Normalized First Derivative w.r.t Y */
float m_yFirstDerv;
/** @brief Normalized Second Derivative w.r.t X */
float m_xSecondDerv;
/** @brief Normalized Second Derivative w.r.t Y */
float m_ySecondDerv;
/** @brief Curvature value */
float m_curvature;
/** @brief Pen-up information */
bool m_penUp;
/** @brief Delimiter character */
string m_data_delimiter;
//@}
public:
/** @name Constructors and Destructor */
//@{
/**
* Default Constructor.
*/
L7ShapeFeature();
/** parameterized constructor
*/
L7ShapeFeature(float inX, float inY, float inXFirstDerv, float inYFirstDerv,
float inXSecondDerv, float inYSecondDerv, float inCurvature,
bool inPenUp);
/**
* Default destructor.
*/
~L7ShapeFeature();
/**
* Returns the value of the class data member L7ShapeFeature::m_x
*/
float getX() const;
/**
* Returns the value of the class data member L7ShapeFeature::m_y
*/
float getY() const;
/**
* Returns the value of the class data member L7ShapeFeature::m_xFirstDerv
*/
float getXFirstDerv() const;
/**
* Returns the value of the class data member L7ShapeFeature::m_yFirstDerv
*/
float getYFirstDerv() const;
/**
* Returns the value of the class data member L7ShapeFeature::m_xSecondDerv
*/
float getXSecondDerv() const;
/**
* Returns the value of the class data member L7ShapeFeature::m_ySecondDerv
*/
float getYSecondDerv() const;
/**
* Returns the value of the class data member L7ShapeFeature::m_curvature
*/
float getCurvature() const;
/**
* Returns the value of the class data member L7ShapeFeature::m_penUp
*/
bool isPenUp() const;
/**
* Sets the value of L7ShapeFeature::m_x
*/
void setX(float x);
/**
* Sets the value of L7ShapeFeature::m_y
*/
void setY(float y);
/**
* Sets the value of L7ShapeFeature::m_xFirstDerv
*/
void setXFirstDerv(float xFirstDerv);
/**
* Sets the value of L7ShapeFeature::m_yFirstDerv
*/
void setYFirstDerv(float yFirstDerv);
/**
* Sets the value of L7ShapeFeature::m_xSecondDerv
*/
void setXSecondDerv(float xSecondDerv);
/**
* Sets the value of L7ShapeFeature::m_ySecondDerv
*/
void setYSecondDerv(float ySecondDerv);
/**
* Sets the value of L7ShapeFeature::m_curvature
*/
void setCurvature(float curvature);
/**
* Sets the value of L7ShapeFeature::m_penUp
*/
void setPenUp(bool penUp);
/**
* @brief Initializes an instance of L7ShapeFeature from the string passed as parameter.
*
* <b>Semantics</b>
*
* - Tokenize the input string on L7ShapeFeature::m_data_delimiter using StringTokenizer::tokenizeString
* - Initialize the data members of the class with the tokens returned.
*
* @param initString : string& : Reference to the initialization string.
*
* @return FAILURE : If the initalization string contains more than or less than seven tokens (after tokenizing on L7ShapeFeature::m_data_delimiter)
* @return SUCCESS : If initialization done without any errors.
*
*/
//see interface
int initialize(const string& initString);
int initialize(const floatVector& initFloatVector);
/**
* @brief Gives the string representation of the L7ShapeFeature instance
*/
//see interface
void toString(string& strFeat) const;
/**
* This method implements the clone pattern and returns a cloned instance of the invoking L7ShapeFeature object
*/
LTKShapeFeaturePtr clone() const;
/**
* @brief Computes the Euclidean Distance between two L7ShapeFeature instances.
* Computes the square root of ( (m_x-passed_x)^2 + (m_y-passed_y)^2+ (m_xFirstDerv-passed_x1)^2 +(m_yFirstDerv-passed_y1)^2+(m_xSecondDerv-passed_x2)^2+(m_ySecondDerv-passed_y2)^2+(m_curvature-passed_curvature)^2).
* @param f : LTKShapeFeature* : Base class pointer holding a pointer to L7ShapeFeature instance from which the distance to the invoking object is to be computed.
*
* @return float : Distance between two points in the LocalSeven feature representation
*
*/
void getDistance(const LTKShapeFeaturePtr& shapeFeaturePtr, float& outDistance) const;
/**
* @brief Adds two L7ShapeFeature instances.
* Computes the sum of the member variables of the passed LTKShapeFeature object and the invoking LTKShapeFeature object. The new member variables are stored in a newly created L7ShapeFeature object. Neither the invoking nor the passed object object are changed.
* new_x=m_x+ (*secondFeature).m_x;
* @param secondFeature : LTKShapeFeature* : Base class pointer holding a pointer to the L7ShapeFeature instance which is to be added to the invoking L7ShapeFeature object.
*
* @return LTKShapeFeature* : Base class pointer to the L7ShapeFeature instance holding the result of the addition operation.
*
*/
int addFeature(const LTKShapeFeaturePtr& secondFeature, LTKShapeFeaturePtr& outResult ) const;
/**
* @brief Subtracts two L7ShapeFeature instances.
* Subtracts the member variables of the passed LTKShapeFeature object from the invoking LTKShapeFeature object. The new member variables are stored in a newly created L7ShapeFeature object, which is returned. Neither the invoking nor the passed object object are changed.
* new_x=m_x-(*secondFeature).m_x;
*
* @param secondFeature : LTKShapeFeature* : Base class pointer holding a pointer to the L7ShapeFeature instance which is to be subtracted.
*
* @return LTKShapeFeature* : Base class pointer to the L7ShapeFeature instance holding the result of the subtraction operation.
*
*/
int subtractFeature(const LTKShapeFeaturePtr& secondFeature, LTKShapeFeaturePtr& outResult ) const;
/**
* @brief Scales the L7ShapeFeature feature by a scalar (float value).
* Mulitplies all the member variables of the invoking L7ShapeFeature object by alpha. The new member variables are stored in a newly created L7ShapeFeature object, which is returned. The invoking LTKShapeFeature object is not changed.
* new_x=alpha*m_x
*
* @param alpha : float: The float value by which all the member variables should be multiplied.
* @return LTKShapeFeature* : Base class pointer to the L7ShapeFeature instance holding the result of the scaling operation .
*
*/
int scaleFeature(float alpha, LTKShapeFeaturePtr& outResult) const;
/**
* Converts the LocalSeven feature instance into a float vector. The elements of the float vector are m_x,m_y,m_xFirstDerv,m_yFirstDerv,m_xSecondDerv,m_ySecondDerv and m_curvature in this order.
* @param floatVec: vector<float>&: The float vector which will contain the member values.
* @return int : returns SUCCESS or FAILURE
*
*/
int toFloatVector(vector<float>& floatVec);
/**
* Converts the LocalSeven feature instance into a integer vector. The elements of the int vector are m_x,m_y,m_xFirstDerv,m_yFirstDerv,m_xSecondDerv,m_ySecondDerv and m_curvature in this order.
* @param intVec: vector<int>&: The int vector which will contain the member values.
* @return int : returns SUCCESS or FAILURE
*
*/
int toIntVector(vector<int>& intVec);
int getFeatureDimension();
};
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