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CatmullRomSpline< T > Class Template Reference |
#include <vigra/splines.hxx>
Public Types | |
typedef T | argument_type |
typedef T | result_type |
enum | StaticOrder |
typedef T | value_type |
Public Member Functions | |
unsigned int | derivativeOrder () const |
result_type | operator() (argument_type x) const |
T | operator[] (T x) const |
ArrayVector< double > const & | prefilterCoefficients () const |
int | radius () const |
Interpolating 3-rd order splines.
Implements the Catmull/Rom cardinal function
It can be used as a functor, and as a kernel for resamplingConvolveImage() to create a differentiable interpolant of an image. However, it should be noted that a twice differentiable interpolant can be created with only slightly more effort by recursive prefiltering followed by convolution with a 3rd order B-spline.
#include <vigra/splines.hxx>
Namespace: vigra
typedef T value_type |
the kernel's value type
typedef T argument_type |
the unary functor's argument type
typedef T result_type |
the unary functor's result type
enum StaticOrder |
the splines polynomial order
T operator[] | ( | T | x | ) | const |
index operator – same as operator()
int radius | ( | ) | const |
Radius of the function's support. Needed for resamplingConvolveImage(), always 2.
unsigned int derivativeOrder | ( | ) | const |
Derivative order of the function: always 0.
ArrayVector<double> const& prefilterCoefficients | ( | ) | const |
Prefilter coefficients for compatibility with vigra::BSpline. (array has zero length, since prefiltering is not necessary).
© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) |
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