In this example we rotate a linefinder tool around a circle calculating the min and max radius of the circle.

The following tools are present in the toolbox:

• mref - MoveReference - use to rotate the reference system
• lf - LineFinder - finds a straight line at the outer edges of the circle
• d1 - PointDistanceTool - calcalulates the distance from radius center to the center of linefinder line

The rotated linefinder

Example:

mref = GetTool('mref')
lf = GetTool('lf')
d1 = GetTool('d1')
img = GetImageMatr('Images')
radius = []
for angle in range(0,360,10):  # steps from 0 to 360 degrees in anglesteps of 10
  SetConfigValue('mref.Rotation',angle)
  mref.execute(img)
  lf.execute(img)
  d1.execute(img)
  d = d1.getValue('Distance')
  if d > 5 :
    radius.append(d) # appends valid radiuses to list
    print 'angle - ',angle,' - d = ',d
    print ' list ',radius, ' min - ',min(radius),' max - ',max(radius)
SetValue('Min.Value',min(radius))
SetValue('Max.Value',max(radius))