A.I.M.S algorithms


cubicresampler_d.h
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33 
34 
35 #ifndef AIMS_RESAMPLING_CUBICRESAMPLER_D_H
36 #define AIMS_RESAMPLING_CUBICRESAMPLER_D_H
37 
38 #include <cstdlib>
40 #include <aims/utility/channel.h>
41 
42 template < class T >
44  : SplineResampler< T >()
45 {
46 
47  this->_poles.push_back( std::sqrt( 3.0 ) - 2.0 );
48  this->_gain = 12.0 - std::sqrt( 108.0 );
49 
50 }
51 
52 
53 template < class T >
55 {
56 }
57 
58 
59 template < class T >
61 {
62 
63  return 3;
64 
65 }
66 
67 
68 template < class T >
69 double CubicResampler< T >::getBSplineWeight( int i, double x ) const
70 {
71 
72  x = std::fabs( x - ( double )i );
73  if ( x < 1.0 )
74  {
75 
76  return ( x * x * ( x - 2.0 ) * 3.0 + 4.0 ) * ( 1.0 / 6.0 );
77 
78  }
79  if ( x < 2.0 )
80  {
81 
82  x = 2.0 - x;
83  return x * x * x * ( 1.0 / 6.0 );
84 
85  }
86  return 0.0;
87 
88 }
89 
90 // AimsRGB Specialization
93 
94 #endif
95 
#define AIMS_RESAMPLING_INSTANCIATE_MULTICHANNELRESAMPLER(R, T)
int getOrder() const
Spline order (1 to 7)
B-Spline-based resampling.
double getBSplineWeight(int i, double x) const
Returns B^n( x - i )
std::vector< double > _poles