shape_trans ( Region : RegionTrans : Type : )

Transfor the shape of a region.

shape_trans transforms the shape of the input regions depending on the parameter Type:

  'convex'
      Convex hull.

  'ellipse'
      Ellipse with the same moments and area as the input region.

  'outer_circle'
      Smallest enclosing circle.

  'inner_circle'
      Largest circle fitting into the region.

  'rectangle1'
      Smallest enclosing rectangle parallel to the coordinate axes.

  'rectangle2'
      Smallest enclosing rectangle.

  'inner_center'
      The point on the skeleton of the input region having the
      smallest distance to the center of gravity of the input
      region.


Parameters

Region (input_object)
region(-array) -> object
Regions to be transformed.

RegionTrans (output_object)
region(-array) -> object
Transformed regions.

Type (input_control)
string -> string
Type of transformation.
Default value: 'convex'
List of values: 'convex', 'ellipse', 'outer_circle', 'inner_circle', 'rectangle1', 'rectangle2', 'inner_center'


Complexity

Let F be the area of the input region. Then the runtime complexity is O(F).


Result

shape_trans returns TRUE if all parameters are correct. The behavior in case of empty input (no regions given) can be set via set_system(::'no_object_result',<Result>:). If necessary, an exception is raised.


Possible Predecessors

connection, regiongrowing__


Possible Successors

disp_region, regiongrowing_mean, area_center


See also

convexity, elliptic_axis, area_center, smallest_rectangle1, smallest_rectangle2, set_shape, select_shape, inner_circle



Copyright © 1996-1997 MVTec Software GmbH