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
66
67
68
|
/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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.txt
*
* 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 itkKernelFunctionBase2_h
#define itkKernelFunctionBase2_h
#include "itkKernelFunctionBase.h"
namespace itk
{
/** \class KernelFunctionBase2
* \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
* \ingroup ITKCommon
*/
template <typename TRealValueType = double>
class ITK_TEMPLATE_EXPORT KernelFunctionBase2 : public KernelFunctionBase<TRealValueType>
{
public:
/** Standard class typedefs. */
using Self = KernelFunctionBase2;
using Superclass = KernelFunctionBase<TRealValueType>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using RealType = TRealValueType;
/** Run-time type information (and related methods). */
itkTypeMacro(KernelFunctionBase2, KernelFunctionBase);
/** Evaluate the function. Subclasses must implement this. */
TRealValueType
Evaluate(const TRealValueType & u) const override = 0;
/** Evaluate the function. Subclasses must implement this. */
virtual void
Evaluate(const TRealValueType & u, TRealValueType * weights) const = 0;
protected:
KernelFunctionBase2() = default;
~KernelFunctionBase2() override = default;
};
} // end namespace itk
#endif // itkKernelFunctionBase2_h
|
