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

buildCostMatrix

Positional Arguments

• self: Evision.HistogramCostExtractor.t()
• descriptors1: Evision.Mat
• descriptors2: Evision.Mat

Return

• costMatrix: Evision.Mat.t().

Python prototype (for reference only):

buildCostMatrix(descriptors1, descriptors2[, costMatrix]) -> costMatrix

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

buildCostMatrix

Positional Arguments

• self: Evision.HistogramCostExtractor.t()
• descriptors1: Evision.Mat
• descriptors2: Evision.Mat

Return

• costMatrix: Evision.Mat.t().

Python prototype (for reference only):

buildCostMatrix(descriptors1, descriptors2[, costMatrix]) -> costMatrix

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

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

Clears the algorithm state

Positional Arguments

• self: Evision.HistogramCostExtractor.t()

Python prototype (for reference only):

clear() -> None

@spec empty(Keyword.t()) :: any() | {:error, String.t()}

@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.HistogramCostExtractor.t()

Return

• retval: bool

Python prototype (for reference only):

empty() -> retval

@spec getDefaultCost(Keyword.t()) :: any() | {:error, String.t()}

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

getDefaultCost

Positional Arguments

• self: Evision.HistogramCostExtractor.t()

Return

• retval: float

Python prototype (for reference only):

getDefaultCost() -> retval

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

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

getDefaultName

Positional Arguments

• self: Evision.HistogramCostExtractor.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 getNDummies(Keyword.t()) :: any() | {:error, String.t()}

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

getNDummies

Positional Arguments

• self: Evision.HistogramCostExtractor.t()

Return

• retval: integer()

Python prototype (for reference only):

getNDummies() -> retval

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

Reads algorithm parameters from a file storage

Positional Arguments

• self: Evision.HistogramCostExtractor.t()
• func: Evision.FileNode

Python prototype (for reference only):

read(fn) -> None

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

save

Positional Arguments

• self: Evision.HistogramCostExtractor.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 setDefaultCost(t(), number()) :: t() | {:error, String.t()}

setDefaultCost

Positional Arguments

• self: Evision.HistogramCostExtractor.t()
• defaultCost: float

Python prototype (for reference only):

setDefaultCost(defaultCost) -> None

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

setNDummies

Positional Arguments

• self: Evision.HistogramCostExtractor.t()
• nDummies: integer()

Python prototype (for reference only):

setNDummies(nDummies) -> None

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

Stores algorithm parameters in a file storage

Positional Arguments

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

Python prototype (for reference only):

write(fs) -> None

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

write

Positional Arguments

• self: Evision.HistogramCostExtractor.t()
• fs: Evision.FileStorage
• name: String

Has overloading in C++

Python prototype (for reference only):

write(fs, name) -> None