View Source Evision.BgSegm.SyntheticSequenceGenerator (Evision v0.1.28)

Link to this section Summary

Types

t()

Type that represents an BgSegm.SyntheticSequenceGenerator struct.

Functions

Clears the algorithm state

Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read

getDefaultName

Obtain the next frame in the sequence.

Obtain the next frame in the sequence.

Reads algorithm parameters from a file storage

Stores algorithm parameters in a file storage

Link to this section Types

@type t() :: %Evision.BgSegm.SyntheticSequenceGenerator{ref: reference()}

Type that represents an BgSegm.SyntheticSequenceGenerator struct.

  • ref. reference()

    The underlying erlang resource variable.

Link to this section Functions

@spec clear(t()) :: t() | {:error, String.t()}

Clears the algorithm state

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()

Python prototype (for reference only):

clear() -> None
@spec empty(t()) :: boolean() | {:error, String.t()}

Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
Return
  • retval: bool

Python prototype (for reference only):

empty() -> retval
@spec getDefaultName(t()) :: binary() | {:error, String.t()}

getDefaultName

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
Return

Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.

Python prototype (for reference only):

getDefaultName() -> retval
@spec getNextFrame(t()) :: {Evision.Mat.t(), Evision.Mat.t()} | {:error, String.t()}

Obtain the next frame in the sequence.

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
Return
  • frame: Evision.Mat.t().

    Output frame.

  • gtMask: Evision.Mat.t().

    Output ground-truth (reference) segmentation mask object/background.

Python prototype (for reference only):

getNextFrame([, frame[, gtMask]]) -> frame, gtMask
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getNextFrame(self, opts)

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@spec getNextFrame(t(), [{atom(), term()}, ...] | nil) ::
  {Evision.Mat.t(), Evision.Mat.t()} | {:error, String.t()}

Obtain the next frame in the sequence.

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
Return
  • frame: Evision.Mat.t().

    Output frame.

  • gtMask: Evision.Mat.t().

    Output ground-truth (reference) segmentation mask object/background.

Python prototype (for reference only):

getNextFrame([, frame[, gtMask]]) -> frame, gtMask
@spec read(t(), Evision.FileNode.t()) :: t() | {:error, String.t()}

Reads algorithm parameters from a file storage

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
  • fn_: Evision.FileNode.t()

Python prototype (for reference only):

read(fn_) -> None
@spec save(t(), binary()) :: t() | {:error, String.t()}

save

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
  • filename: String

Saves the algorithm to a file. In order to make this method work, the derived class must implement Algorithm::write(FileStorage& fs).

Python prototype (for reference only):

save(filename) -> None
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syntheticSequenceGenerator(background, object, amplitude, wavelength, wavespeed, objspeed)

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@spec syntheticSequenceGenerator(
  Evision.Mat.maybe_mat_in(),
  Evision.Mat.maybe_mat_in(),
  number(),
  number(),
  number(),
  number()
) :: t() | {:error, String.t()}

Creates an instance of SyntheticSequenceGenerator.

Positional Arguments
  • background: Evision.Mat.t().

    Background image for object.

  • object: Evision.Mat.t().

    Object image which will move slowly over the background.

  • amplitude: double.

    Amplitude of wave distortion applied to background.

  • wavelength: double.

    Length of waves in distortion applied to background.

  • wavespeed: double.

    How fast waves will move.

  • objspeed: double.

    How fast object will fly over background.

Return
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()

Python prototype (for reference only):

SyntheticSequenceGenerator(background, object, amplitude, wavelength, wavespeed, objspeed) -> <bgsegm_SyntheticSequenceGenerator object>
@spec write(t(), Evision.FileStorage.t()) :: t() | {:error, String.t()}

Stores algorithm parameters in a file storage

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
  • fs: Evision.FileStorage.t()

Python prototype (for reference only):

write(fs) -> None
@spec write(t(), Evision.FileStorage.t(), binary()) :: t() | {:error, String.t()}

write

Positional Arguments
  • self: Evision.BgSegm.SyntheticSequenceGenerator.t()
  • fs: Evision.FileStorage.t()
  • name: String

Has overloading in C++

Python prototype (for reference only):

write(fs, name) -> None