View Source Evision.Rapid.Tracker (Evision v0.1.37)

Summary

Types

t()

Type that represents an Rapid.Tracker struct.

Functions

Clears the algorithm state

clearState

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

getDefaultName

Reads algorithm parameters from a file storage

Stores algorithm parameters in a file storage

Types

@type t() :: %Evision.Rapid.Tracker{ref: reference()}

Type that represents an Rapid.Tracker struct.

  • ref. reference()

    The underlying erlang resource variable.

Functions

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

Clears the algorithm state

Positional Arguments
  • self: Evision.Rapid.Tracker.t()

Python prototype (for reference only):

clear() -> None
@spec clearState(Evision.Tracker.t()) :: Evision.Tracker.t() | {:error, String.t()}

clearState

Positional Arguments
  • self: Evision.Rapid.Tracker.t()

Python prototype (for reference only):

clearState() -> None
Link to this function

compute(self, img, num, len, k, rvec, tvec)

View Source

compute

Positional Arguments
  • self: Evision.Rapid.Tracker.t()
  • img: Evision.Mat.t()
  • num: int
  • len: int
  • k: Evision.Mat.t()
Keyword Arguments
  • termcrit: TermCriteria.
Return
  • retval: float
  • rvec: Evision.Mat.t()
  • tvec: Evision.Mat.t()

Python prototype (for reference only):

compute(img, num, len, K, rvec, tvec[, termcrit]) -> retval, rvec, tvec
Link to this function

compute(self, img, num, len, k, rvec, tvec, opts)

View Source

compute

Positional Arguments
  • self: Evision.Rapid.Tracker.t()
  • img: Evision.Mat.t()
  • num: int
  • len: int
  • k: Evision.Mat.t()
Keyword Arguments
  • termcrit: TermCriteria.
Return
  • retval: float
  • rvec: Evision.Mat.t()
  • tvec: Evision.Mat.t()

Python prototype (for reference only):

compute(img, num, len, K, rvec, tvec[, termcrit]) -> retval, rvec, tvec
@spec empty(Evision.Tracker.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.Rapid.Tracker.t()
Return
  • retval: bool

Python prototype (for reference only):

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

getDefaultName

Positional Arguments
  • self: Evision.Rapid.Tracker.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 read(Evision.Tracker.t(), Evision.FileNode.t()) ::
  Evision.Tracker.t() | {:error, String.t()}

Reads algorithm parameters from a file storage

Positional Arguments
  • self: Evision.Rapid.Tracker.t()
  • fn_: Evision.FileNode.t()

Python prototype (for reference only):

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

save

Positional Arguments
  • self: Evision.Rapid.Tracker.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 write(Evision.Tracker.t(), Evision.FileStorage.t()) ::
  Evision.Tracker.t() | {:error, String.t()}

Stores algorithm parameters in a file storage

Positional Arguments
  • self: Evision.Rapid.Tracker.t()
  • fs: Evision.FileStorage.t()

Python prototype (for reference only):

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

write

Positional Arguments
  • self: Evision.Rapid.Tracker.t()
  • fs: Evision.FileStorage.t()
  • name: String

Has overloading in C++

Python prototype (for reference only):

write(fs, name) -> None