Draw on Image

class node_draw.ImageDraw

Annotates an image with drawings based on tabular data.

Algorithms:

• circle

  Draws (non-filled) circles from given X,Y points with givenradii

  x:

  Column name containing X-coordinates

  y:

  Column name containing Y-coordinates

  radius:

  Column name containing radii

  red color:

  A number (0-1) or column name containing colors for first imagechannel.

  green color:

  A number (0-1) or column name containing colors for second imagechannel, ignored for non RGB images

  blue color:

  A number (0-1) or column name containing colors for third imagechannel, ignored for non RGB images

  alpha value:

  A number (0-1) or column name containing alpha values used forblending the drawings over the image.

  1.0 is opaque, 0.0 transparent

• filled circle

  Draws filled circles from given X,Y points with given radii

  x:

  Column name containing X-coordinates

  y:

  Column name containing Y-coordinates

  radius:

  Column name containing radii

  red color:

  A number (0-1) or column name containing colors for first imagechannel.

  green color:

  A number (0-1) or column name containing colors for second imagechannel, ignored for non RGB images

  blue color:

  A number (0-1) or column name containing colors for third imagechannel, ignored for non RGB images

  alpha value:

  A number (0-1) or column name containing alpha values used forblending the drawings over the image.

  1.0 is opaque, 0.0 transparent

• lines

  Draws lines from coordinates (X,Y) to coordinates (X2,Y2)

  x:

  Column name containing X-coordinates

  y:

  Column name containing Y-coordinates

  x2:

  Column name containing X2-coordinates

  y2:

  Column name containing Y2-coordinates

  red color:

  A number (0-1) or column name containing colors for first imagechannel.

  green color:

  A number (0-1) or column name containing colors for second imagechannel, ignored for non RGB images

  blue color:

  A number (0-1) or column name containing colors for third imagechannel, ignored for non RGB images

  alpha value:

  A number (0-1) or column name containing alpha values used forblending the drawings over the image.

  1.0 is opaque, 0.0 transparent

• symbols

  Draws a symbol defined by number of vertices. Negative valuesare drawn as convex objects. Eg, triangles have N=3,squares N=4, hexagons N=6, stars N=-6

  x:

  Column name containing X-coordinates

  y:

  Column name containing Y-coordinates

  radius:

  Column name containing radii

  red color:

  A number (0-1) or column name containing colors for first imagechannel.

  green color:

  A number (0-1) or column name containing colors for second imagechannel, ignored for non RGB images

  blue color:

  A number (0-1) or column name containing colors for third imagechannel, ignored for non RGB images

  alpha value:

  A number (0-1) or column name containing alpha values used forblending the drawings over the image.

  1.0 is opaque, 0.0 transparent

  N:

  Column name containing number of vertices

Inputs:

image : image

Image to draw on

table : table

Table used for drawing

Outputs:

output : image

Resulting image