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

Clears the algorithm state

Positional Arguments

• self: Evision.GeneralizedHough.t()

Python prototype (for reference only):

clear() -> None

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

detect

Positional Arguments

• self: Evision.GeneralizedHough.t()
• image: Evision.Mat.t()

Return

• positions: Evision.Mat.t().
• votes: Evision.Mat.t().

Python prototype (for reference only):

detect(image[, positions[, votes]]) -> positions, votes

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

detect

Positional Arguments

• self: Evision.GeneralizedHough.t()
• image: Evision.Mat.t()

Return

• positions: Evision.Mat.t().
• votes: Evision.Mat.t().

Python prototype (for reference only):

detect(image[, positions[, votes]]) -> positions, votes

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

detect

Positional Arguments

• self: Evision.GeneralizedHough.t()
• edges: Evision.Mat.t()
• dx: Evision.Mat.t()
• dy: Evision.Mat.t()

Return

• positions: Evision.Mat.t().
• votes: Evision.Mat.t().

Python prototype (for reference only):

detect(edges, dx, dy[, positions[, votes]]) -> positions, votes

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

detect

Positional Arguments

• self: Evision.GeneralizedHough.t()
• edges: Evision.Mat.t()
• dx: Evision.Mat.t()
• dy: Evision.Mat.t()

Return

• positions: Evision.Mat.t().
• votes: Evision.Mat.t().

Python prototype (for reference only):

detect(edges, dx, dy[, positions[, votes]]) -> positions, votes

@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.GeneralizedHough.t()

Return

• retval: bool

Python prototype (for reference only):

empty() -> retval

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

getCannyHighThresh

Positional Arguments

• self: Evision.GeneralizedHough.t()

Return

• retval: int

Python prototype (for reference only):

getCannyHighThresh() -> retval

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

getCannyLowThresh

Positional Arguments

• self: Evision.GeneralizedHough.t()

Return

• retval: int

Python prototype (for reference only):

getCannyLowThresh() -> retval

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

getDefaultName

Positional Arguments

• self: Evision.GeneralizedHough.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 getDp(t()) :: number() | {:error, String.t()}

getDp

Positional Arguments

• self: Evision.GeneralizedHough.t()

Return

• retval: double

Python prototype (for reference only):

getDp() -> retval

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

getMaxBufferSize

Positional Arguments

• self: Evision.GeneralizedHough.t()

Return

• retval: int

Python prototype (for reference only):

getMaxBufferSize() -> retval

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

getMinDist

Positional Arguments

• self: Evision.GeneralizedHough.t()

Return

• retval: double

Python prototype (for reference only):

getMinDist() -> retval

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

Reads algorithm parameters from a file storage

Positional Arguments

• self: Evision.GeneralizedHough.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.GeneralizedHough.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 setCannyHighThresh(t(), integer()) :: t() | {:error, String.t()}

setCannyHighThresh

Positional Arguments

• self: Evision.GeneralizedHough.t()
• cannyHighThresh: int

Python prototype (for reference only):

setCannyHighThresh(cannyHighThresh) -> None

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

setCannyLowThresh

Positional Arguments

• self: Evision.GeneralizedHough.t()
• cannyLowThresh: int

Python prototype (for reference only):

setCannyLowThresh(cannyLowThresh) -> None

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

setDp

Positional Arguments

• self: Evision.GeneralizedHough.t()
• dp: double

Python prototype (for reference only):

setDp(dp) -> None

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

setMaxBufferSize

Positional Arguments

• self: Evision.GeneralizedHough.t()
• maxBufferSize: int

Python prototype (for reference only):

setMaxBufferSize(maxBufferSize) -> None

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

setMinDist

Positional Arguments

• self: Evision.GeneralizedHough.t()
• minDist: double

Python prototype (for reference only):

setMinDist(minDist) -> None

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

setTemplate

Positional Arguments

• self: Evision.GeneralizedHough.t()
• templ: Evision.Mat.t()

Keyword Arguments

• templCenter: Point.

Python prototype (for reference only):

setTemplate(templ[, templCenter]) -> None

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

setTemplate

Positional Arguments

• self: Evision.GeneralizedHough.t()
• templ: Evision.Mat.t()

Keyword Arguments

• templCenter: Point.

Python prototype (for reference only):

setTemplate(templ[, templCenter]) -> None

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

setTemplate

Positional Arguments

• self: Evision.GeneralizedHough.t()
• edges: Evision.Mat.t()
• dx: Evision.Mat.t()
• dy: Evision.Mat.t()

Keyword Arguments

• templCenter: Point.

Python prototype (for reference only):

setTemplate(edges, dx, dy[, templCenter]) -> None

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

setTemplate

Positional Arguments

• self: Evision.GeneralizedHough.t()
• edges: Evision.Mat.t()
• dx: Evision.Mat.t()
• dy: Evision.Mat.t()

Keyword Arguments

• templCenter: Point.

Python prototype (for reference only):

setTemplate(edges, dx, dy[, templCenter]) -> None

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

Stores algorithm parameters in a file storage

Positional Arguments

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

Has overloading in C++

Python prototype (for reference only):

write(fs, name) -> None