/usr/include/InsightToolkit/Common/itkKernelFunction.h is in libinsighttoolkit3-dev 3.20.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkKernelFunction.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkKernelFunction_h
#define __itkKernelFunction_h
#include "itkFunctionBase.h"
#include "vnl/vnl_math.h"
namespace itk
{
/** \class KernelFunction
* \brief Kernel used for density estimation and nonparameteric regression.
*
* This class encapsulates the smoothing kernel used for statistical density
* estimation and nonparameteric regression. The basic idea of the kernel
* approach is to weight observations by a smooth function (the kernel)
* to created a smoothed approximation.
*
* Reference:
* Silverman, B. W. (1986) Density Estimation. London: Chapman and Hall.
*
* \ingroup Functions
*/
class ITKCommon_EXPORT KernelFunction : public FunctionBase<double,double>
{
public:
/** Standard class typedefs. */
typedef KernelFunction Self;
typedef FunctionBase<double,double> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(KernelFunction, FunctionBase);
/** Evaluate the function. Subclasses must implement this. */
virtual double Evaluate (const double& u) const = 0;
protected:
KernelFunction();
~KernelFunction();
void PrintSelf(std::ostream& os, Indent indent) const
{ Superclass::PrintSelf( os, indent ); }
};
} // end namespace itk
#endif
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