Draw on Image

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

  force colors:

  If true then forces output to be RGB

• 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

  force colors:

  If true then forces output to be RGB

• 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

  force colors:

  If true then forces output to be RGB

• 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

  force colors:

  If true then forces output to be RGB

Input ports:

image : image

Image to draw on

table : table

Table used for drawing

Output ports:

output : image

Resulting image

Configuration:

Algorithm (algorithm)

(no description)

x (x)

(no description)

y (y)

(no description)

x2 (x2)

(no description)

y2 (y2)

(no description)

N (N)

(no description)

radius (radius)

(no description)

red color (red color)

(no description)

green color (green color)

(no description)

blue color (blue color)

(no description)

alpha value (alpha value)

(no description)

force colors (force colors)

(no description)

class node_draw.ImageDraw