Reduce

Class: NodeStructReduce

Node Icon

Reduces the number of points of structures in a structure set by calculating the area of the parallelogram defined by 3 consecutive points on the contour. One side is defined by point 1-2 and the other by 1-3. If the area of the parallelogram is less the the stopping criteria, point 2 is discarded. The process is iterative and will be continued until maximum iterations is reached, or no more points can be discarded with set stopping criteria.

Stopping criteria

Example workflows

Reduce number of points in a structure set

Inputs

Structure

The input structure set to be reduced.

Type: RTStructCollection, Required, Single

Outputs

Out

The reduced structure set.

Type: RTStructCollection

Settings

Iterations Integer

Set the maximum number of iterations for polygon reduction.

Stopping Criteria Number

The maximum area the parallelogram can have for a point to be removed in mm².

References

1. "The Insight Segmentation and Registration Toolkit" www.itk.org