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KernelFactory Class Reference

#include <kernelfactory.h>

List of all members.

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Detailed Description

Generates two-dimensional matrices of function values as kernels for convolution.

Definition at line 22 of file kernelfactory.h.

Public Types
typedef InternalNeuralRegion::WeightMatrix	KernelMatrix
	Type to use for a generated kernel.
typedef double(*	kernel_fnPtr )(double x_sq, double sig_sq)
	Concrete type to use for a kernel function pointer.
enum	BlurTypes {   Blur_SquareAverage, Blur_CircularAverage, Blur_Gaussian, Blur_DoG,   Blur_LoG, Blur_GoD, Blur_DoGGoD, Blur_PGM,   Blur_SquareRandom, Blur_CircularRandom }
	Possible values for a blur_type.
Public Methods
KernelMatrix	create (int index, double world_size_scale, StringArgs arglist)
	Update the kernel matrices for each eye.
KernelMatrix	create (kernel_fnPtr fnptr, double radius, double max_radius, string &errors, bool circular=true, bool normalize=true)
	Convenient wrapper for RadialFunction's version.
void	register_params_and_commands (void)
	Call before using any of the parameters and commands in this class.
Public Attributes
const BlurTypes	max_blur_type
	Highest index defined in BlurTypes.

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Member Function Documentation

KernelFactory::KernelMatrix KernelFactory::create (  int    index, double    wss, StringArgs    arglist )

Update the kernel matrices for each eye. This is currently not as cleanly implemented as input_define or input_define_generator (i.e., no hierarchy of subclasses) but that added complexity probably isn't worth it since the base implementation (the blurring kernel passed to retina.h) is itself very general. So this is basically just a virtual constructor for such a kernel. The default width of each matrix was chosen empirically for each type, based upon plots of the kernel at small radii (approximately 1-6). For the values chosen, the function was nearly zero to the naked eye (if it tended towards zero, of course). The given index is used for DoGGoD, to determine which type to use. Some types may return an empty kernel (0 x 0), usually to indicate an error, so that possibility must be checked before using the kernel. Definition at line 234 of file kernelfactory.c. References KernelMatrix, StringArgs::next(), pgm_read(), and mat::sum(). Referenced by KernelFactoryWrapper::operator()().

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The documentation for this class was generated from the following files:

• kernelfactory.h
• kernelfactory.c

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