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

addNoisePC

Positional Arguments

• pc: Evision.Mat
• scale: double

Return

• retval: Evision.Mat.t()

  Adds a uniform noise in the given scale to the input point cloud

Python prototype (for reference only):

addNoisePC(pc, scale) -> retval

@spec computeNormalsPC3d(
  Evision.Mat.maybe_mat_in(),
  integer(),
  boolean(),
  {number(), number(), number()}
) :: {integer(), Evision.Mat.t()} | {:error, String.t()}

Compute the normals of an arbitrary point cloud computeNormalsPC3d uses a plane fitting approach to smoothly compute local normals. Normals are obtained through the eigenvector of the covariance matrix, corresponding to the smallest eigen value. If PCNormals is provided to be an Nx6 matrix, then no new allocation is made, instead the existing memory is overwritten.

Positional Arguments

• pC: Evision.Mat
• numNeighbors: integer()
• flipViewpoint: bool
• viewpoint: Vec3f

Return

• retval: integer()
• pCNormals: Evision.Mat.t().

@return Returns 0 on success

Python prototype (for reference only):

computeNormalsPC3d(PC, NumNeighbors, FlipViewpoint, viewpoint[, PCNormals]) -> retval, PCNormals

@spec computeNormalsPC3d(
  Evision.Mat.maybe_mat_in(),
  integer(),
  boolean(),
  {number(), number(), number()},
  [{atom(), term()}, ...] | nil
) :: {integer(), Evision.Mat.t()} | {:error, String.t()}

Compute the normals of an arbitrary point cloud computeNormalsPC3d uses a plane fitting approach to smoothly compute local normals. Normals are obtained through the eigenvector of the covariance matrix, corresponding to the smallest eigen value. If PCNormals is provided to be an Nx6 matrix, then no new allocation is made, instead the existing memory is overwritten.

Positional Arguments

• pC: Evision.Mat
• numNeighbors: integer()
• flipViewpoint: bool
• viewpoint: Vec3f

Return

• retval: integer()
• pCNormals: Evision.Mat.t().

@return Returns 0 on success

Python prototype (for reference only):

computeNormalsPC3d(PC, NumNeighbors, FlipViewpoint, viewpoint[, PCNormals]) -> retval, PCNormals

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

@spec getRandomPose(Evision.Mat.t()) :: :ok | {:error, String.t()}

getRandomPose

Positional Arguments

• pose: Evision.Mat

  Generate a random 4x4 pose matrix

Python prototype (for reference only):

getRandomPose(Pose) -> None

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

@spec loadPLYSimple(binary()) :: Evision.Mat.t() | {:error, String.t()}

Load a PLY file

Positional Arguments

• fileName: c_string

Keyword Arguments

• withNormals: integer().

Return

• retval: Evision.Mat.t()

@return Returns the matrix on successful load

Python prototype (for reference only):

loadPLYSimple(fileName[, withNormals]) -> retval

@spec loadPLYSimple(binary(), [{:withNormals, term()}] | nil) ::
  Evision.Mat.t() | {:error, String.t()}

Load a PLY file

Positional Arguments

• fileName: c_string

Keyword Arguments

• withNormals: integer().

Return

• retval: Evision.Mat.t()

@return Returns the matrix on successful load

Python prototype (for reference only):

loadPLYSimple(fileName[, withNormals]) -> retval

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

samplePCByQuantization

Positional Arguments

• pc: Evision.Mat
• xrange: Vec2f
• yrange: Vec2f
• zrange: Vec2f
• sample_step_relative: float

Keyword Arguments

• weightByCenter: integer().

Return

• retval: Evision.Mat.t()

  Sample a point cloud using uniform steps

@return Sampled point cloud

Python prototype (for reference only):

samplePCByQuantization(pc, xrange, yrange, zrange, sample_step_relative[, weightByCenter]) -> retval

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

samplePCByQuantization

Positional Arguments

• pc: Evision.Mat
• xrange: Vec2f
• yrange: Vec2f
• zrange: Vec2f
• sample_step_relative: float

Keyword Arguments

• weightByCenter: integer().

Return

• retval: Evision.Mat.t()

  Sample a point cloud using uniform steps

@return Sampled point cloud

Python prototype (for reference only):

samplePCByQuantization(pc, xrange, yrange, zrange, sample_step_relative[, weightByCenter]) -> retval

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

transformPCPose

Positional Arguments

• pc: Evision.Mat
• pose: Evision.Mat

Return

• retval: Evision.Mat.t()

  Transforms the point cloud with a given a homogeneous 4x4 pose matrix (in double precision)

@return Transformed point cloud

Python prototype (for reference only):

transformPCPose(pc, Pose) -> retval

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

Write a point cloud to PLY file

Positional Arguments

• pC: Evision.Mat
• fileName: c_string

Python prototype (for reference only):

writePLY(PC, fileName) -> None

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

Used for debbuging pruposes, writes a point cloud to a PLY file with the tip of the normal vectors as visible red points

Positional Arguments

• pC: Evision.Mat
• fileName: c_string

Python prototype (for reference only):

writePLYVisibleNormals(PC, fileName) -> None