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

Clears the algorithm state

Positional Arguments

• self: Evision.Tonemap.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.Tonemap.t()

Return

• retval: bool

Python prototype (for reference only):

empty() -> retval

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

getDefaultName

Positional Arguments

• self: Evision.Tonemap.t()

Return

• retval: String

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 getGamma(t()) :: number() | {:error, String.t()}

getGamma

Positional Arguments

• self: Evision.Tonemap.t()

Return

• retval: float

Python prototype (for reference only):

getGamma() -> retval

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

Tonemaps image

Positional Arguments

• self: Evision.Tonemap.t()

• src: Evision.Mat.

  source image - CV_32FC3 Mat (float 32 bits 3 channels)

Return

• dst: Evision.Mat.

  destination image - CV_32FC3 Mat with values in [0, 1] range

Python prototype (for reference only):

process(src[, dst]) -> dst

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

Tonemaps image

Positional Arguments

• self: Evision.Tonemap.t()

• src: Evision.Mat.

  source image - CV_32FC3 Mat (float 32 bits 3 channels)

Return

• dst: Evision.Mat.

  destination image - CV_32FC3 Mat with values in [0, 1] range

Python prototype (for reference only):

process(src[, dst]) -> dst

@spec read(t(), Evision.FileNode.t()) :: :ok | {:error, String.t()}

Reads algorithm parameters from a file storage

Positional Arguments

• self: Evision.Tonemap.t()
• fn_: Evision.FileNode

Python prototype (for reference only):

read(fn_) -> None

@spec save(t(), binary()) :: :ok | {:error, String.t()}

save

Positional Arguments

• self: Evision.Tonemap.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

@spec setGamma(t(), number()) :: :ok | {:error, String.t()}

setGamma

Positional Arguments

• self: Evision.Tonemap.t()
• gamma: float

Python prototype (for reference only):

setGamma(gamma) -> None

@spec write(t(), Evision.FileStorage.t()) :: :ok | {:error, String.t()}

simplified API for language bindings

Positional Arguments

• self: Evision.Tonemap.t()
• fs: Evision.FileStorage

Keyword Arguments

• name: String.

Has overloading in C++

Python prototype (for reference only):

write(fs[, name]) -> None

@spec write(t(), Evision.FileStorage.t(), [{atom(), term()}, ...] | nil) ::
  :ok | {:error, String.t()}

simplified API for language bindings

Positional Arguments

• self: Evision.Tonemap.t()
• fs: Evision.FileStorage

Keyword Arguments

• name: String.

Has overloading in C++

Python prototype (for reference only):

write(fs[, name]) -> None