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
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkCoxDeBoorBSplineKernelFunctionTest2.cxx
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.
=========================================================================*/
#include "itkCoxDeBoorBSplineKernelFunction.h"
/**
* In this test, we check to see that the derivative is calculated
* correctly for spline orders 2 through 10
*/
int itkCoxDeBoorBSplineKernelFunctionTest2( int argc, char * argv [] )
{
if ( argc < 1 )
{
std::cerr << "Usage: " << argv[0] << std::endl;
return EXIT_FAILURE;
}
typedef itk::CoxDeBoorBSplineKernelFunction<3> KernelType;
KernelType::Pointer kernel = KernelType::New();
KernelType::Pointer kernelOrderMinus1 = KernelType::New();
for( unsigned int order = 2; order <= 10; order++ )
{
kernel->SetSplineOrder( order );
kernelOrderMinus1->SetSplineOrder( order - 1 );
for( double t = 0.0; t < static_cast<double>( 0.5*( order+1 ) ); t += 0.1 )
{
KernelType::RealType derivative = kernel->EvaluateDerivative( t );
if( vnl_math_abs( derivative - ( kernelOrderMinus1->Evaluate( t + 0.5 )
- kernelOrderMinus1->Evaluate( t - 0.5 ) ) ) > 1e-10 )
{
return EXIT_FAILURE;
}
// try calculating the nth derivative
for( unsigned int d = 2; d < order-1; d++ )
{
try
{
kernel->EvaluateNthDerivative( t, d );
}
catch(...)
{
return EXIT_FAILURE;
}
}
}
}
return EXIT_SUCCESS;
}
|
