agabor

Documentation

Index

• func Convolve(melData *etensor.Float64, filters FilterSet, rawOut *etensor.Float32, ...)
• func ToTensor(specs []Filter, set *FilterSet)
• type Filter
  • func Active(specs []Filter) (active []Filter)
  • func (f *Filter) Defaults(i int)
• type FilterSet
  • func (fs *FilterSet) ToTable(set FilterSet, tab *etable.Table)

Functions

func Convolve

func Convolve(melData *etensor.Float64, filters FilterSet, rawOut *etensor.Float32, byTime bool)

Convolve processes input using filters that operate over an entire segment of samples

func ToTensor

func ToTensor(specs []Filter, set *FilterSet)

ToTensor generates filters into the tensor passed by caller

Types

type Filter

type Filter struct {
	Off         bool    `desc:"filter on is default - set to true to exclude filter"`
	WaveLen     float64 `desc:"wavelength of the sine waves in normalized units, 1.5 and 2 are reasonable values"`
	Orientation float64 `` /* 148-byte string literal not displayed */
	SigmaWidth  float64 `` /* 157-byte string literal not displayed */
	SigmaLength float64 `` /* 170-byte string literal not displayed */
	PhaseOffset float64 `` /* 146-byte string literal not displayed */
	CircleEdge  bool    `` /* 154-byte string literal not displayed */
	Circular    bool    `desc:"is the gabor circular? orientation, phase, sigmalength and circleedge not used for circular gabor"`
}

Filter, a struct of gabor filter parameters

func Active

func Active(specs []Filter) (active []Filter)

create reduced set of just the active specs

func (*Filter) Defaults

func (f *Filter) Defaults(i int)

Defaults sets default values for any filter fields where 0 is not a reasonable value

type FilterSet

type FilterSet struct {
	SizeX      int             `desc:"size of each filter in X"`
	SizeY      int             `desc:"size of each filter in Y"`
	StrideX    int             `desc:"how far to move the filter in X each step"`
	StrideY    int             `desc:"how far to move the filter in Y each step"`
	Gain       float64         `` /* 145-byte string literal not displayed */
	Distribute bool            `desc:"if multiple horiz or vertical distribute evenly"`
	Filters    etensor.Float64 `view:"no-inline" desc:"actual gabor filters"`
	Table      etable.Table    `view:"-" desc:"simple gabor filter table (view only)"`
}

FilterSet, a struct holding a set of gabor filters stored as a tensor. Though individual filters can vary in size, when used as a set they should all have the same size.

func (*FilterSet) ToTable

func (fs *FilterSet) ToTable(set FilterSet, tab *etable.Table)

ToDo: don't renorm ToTable renders filters into the given etable.Table This is useful for display and validation purposes.