Evision
v0.1.38

View Source Evision.ImgHash.MarrHildrethHash (Evision v0.1.38)

Summary

Types

t()

Type that represents an ImgHash.MarrHildrethHash struct.

Functions

create()

create

create(opts)

create

getAlpha(self)

self explain

getScale(self)

self explain

setKernelParam(self, alpha, scale)

Set Mh kernel parameters

Types

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t()

View Source 
@type t() :: %Evision.ImgHash.MarrHildrethHash{ref: reference()}

Type that represents an ImgHash.MarrHildrethHash struct.

  • ref. reference()

    The underlying erlang resource variable.

Functions

Link to this function

create()

View Source 
@spec create() :: t() | {:error, String.t()}

create

Keyword Arguments

  • alpha: float.

    int scale factor for marr wavelet (default=2).

  • scale: float.

    int level of scale factor (default = 1)

Return
  • retval: Evision.ImgHash.MarrHildrethHash.t()

Python prototype (for reference only):

create([, alpha[, scale]]) -> retval
Link to this function

create(opts)

View Source 
@spec create([{atom(), term()}, ...] | nil) :: t() | {:error, String.t()}

create

Keyword Arguments

  • alpha: float.

    int scale factor for marr wavelet (default=2).

  • scale: float.

    int level of scale factor (default = 1)

Return
  • retval: Evision.ImgHash.MarrHildrethHash.t()

Python prototype (for reference only):

create([, alpha[, scale]]) -> retval
Link to this function

getAlpha(self)

View Source 
@spec getAlpha(t()) :: number() | {:error, String.t()}

self explain

Positional Arguments
  • self: Evision.ImgHash.MarrHildrethHash.t()
Return
  • retval: float

Python prototype (for reference only):

getAlpha() -> retval
Link to this function

getScale(self)

View Source 
@spec getScale(t()) :: number() | {:error, String.t()}

self explain

Positional Arguments
  • self: Evision.ImgHash.MarrHildrethHash.t()
Return
  • retval: float

Python prototype (for reference only):

getScale() -> retval
Link to this function

setKernelParam(self, alpha, scale)

View Source 
@spec setKernelParam(t(), number(), number()) :: t() | {:error, String.t()}

Set Mh kernel parameters

Positional Arguments

  • self: Evision.ImgHash.MarrHildrethHash.t()

  • alpha: float.

    int scale factor for marr wavelet (default=2).

  • scale: float.

    int level of scale factor (default = 1)

Python prototype (for reference only):

setKernelParam(alpha, scale) -> None