@spec drawKeylines(Evision.Mat.maybe_mat_in(), [Evision.LineDescriptor.KeyLine.t()]) ::
  Evision.Mat.t() | {:error, String.t()}

Draws keylines.

Positional Arguments

• image: Evision.Mat.

  input image

• keylines: [Evision.LineDescriptor.KeyLine].

  keylines to be drawn

Keyword Arguments

• color: Evision.scalar().

  color of lines to be drawn (if set to defaul value, color is chosen randomly)

• flags: integer().

  drawing flags

Return

• outImage: Evision.Mat.t().

  output image to draw on

Python prototype (for reference only):

drawKeylines(image, keylines[, outImage[, color[, flags]]]) -> outImage

@spec drawKeylines(
  Evision.Mat.maybe_mat_in(),
  [Evision.LineDescriptor.KeyLine.t()],
  [color: term(), flags: term()] | nil
) :: Evision.Mat.t() | {:error, String.t()}

Draws keylines.

Positional Arguments

• image: Evision.Mat.

  input image

• keylines: [Evision.LineDescriptor.KeyLine].

  keylines to be drawn

Keyword Arguments

• color: Evision.scalar().

  color of lines to be drawn (if set to defaul value, color is chosen randomly)

• flags: integer().

  drawing flags

Return

• outImage: Evision.Mat.t().

  output image to draw on

Python prototype (for reference only):

drawKeylines(image, keylines[, outImage[, color[, flags]]]) -> outImage

@spec drawLineMatches(
  Evision.Mat.maybe_mat_in(),
  [Evision.LineDescriptor.KeyLine.t()],
  Evision.Mat.maybe_mat_in(),
  [Evision.LineDescriptor.KeyLine.t()],
  [Evision.DMatch.t()]
) :: Evision.Mat.t() | {:error, String.t()}

Draws the found matches of keylines from two images.

Positional Arguments

• img1: Evision.Mat.

  first image

• keylines1: [Evision.LineDescriptor.KeyLine].

  keylines extracted from first image

• img2: Evision.Mat.

  second image

• keylines2: [Evision.LineDescriptor.KeyLine].

  keylines extracted from second image

• matches1to2: [Evision.DMatch].

  vector of matches

Keyword Arguments

• matchColor: Evision.scalar().

  drawing color for matches (chosen randomly in case of default value)

• singleLineColor: Evision.scalar().

  drawing color for keylines (chosen randomly in case of default value)

• matchesMask: [char].

  mask to indicate which matches must be drawn

• flags: integer().

  drawing flags, see DrawLinesMatchesFlags

Return

• outImg: Evision.Mat.t().

  output matrix to draw on

Note: If both matchColor and singleLineColor are set to their default values, function draws matched lines and line connecting them with same color

Python prototype (for reference only):

drawLineMatches(img1, keylines1, img2, keylines2, matches1to2[, outImg[, matchColor[, singleLineColor[, matchesMask[, flags]]]]]) -> outImg

@spec drawLineMatches(
  Evision.Mat.maybe_mat_in(),
  [Evision.LineDescriptor.KeyLine.t()],
  Evision.Mat.maybe_mat_in(),
  [Evision.LineDescriptor.KeyLine.t()],
  [Evision.DMatch.t()],
  [
    flags: term(),
    matchColor: term(),
    matchesMask: term(),
    singleLineColor: term()
  ]
  | nil
) :: Evision.Mat.t() | {:error, String.t()}

Draws the found matches of keylines from two images.

Positional Arguments

• img1: Evision.Mat.

  first image

• keylines1: [Evision.LineDescriptor.KeyLine].

  keylines extracted from first image

• img2: Evision.Mat.

  second image

• keylines2: [Evision.LineDescriptor.KeyLine].

  keylines extracted from second image

• matches1to2: [Evision.DMatch].

  vector of matches

Keyword Arguments

• matchColor: Evision.scalar().

  drawing color for matches (chosen randomly in case of default value)

• singleLineColor: Evision.scalar().

  drawing color for keylines (chosen randomly in case of default value)

• matchesMask: [char].

  mask to indicate which matches must be drawn

• flags: integer().

  drawing flags, see DrawLinesMatchesFlags

Return

• outImg: Evision.Mat.t().

  output matrix to draw on

Note: If both matchColor and singleLineColor are set to their default values, function draws matched lines and line connecting them with same color

Python prototype (for reference only):

drawLineMatches(img1, keylines1, img2, keylines2, matches1to2[, outImg[, matchColor[, singleLineColor[, matchesMask[, flags]]]]]) -> outImg