Package com.openinventor.imageviz.engines.imageanalysis.morphometry

Class SoFragmentationIndexQuantification

  • All Implemented Interfaces:
    SafeDisposable
    public class SoFragmentationIndexQuantification
extends SoImageVizEngine
    SoFragmentationIndexQuantification engine. The SoFragmentationIndexQuantification engine computes an index of relative convexity or concavity of the surface.

    For an introduction, see section Morphometry.

    This engine computes an indicator of connectivity. It calculates an index of relative convexity or concavity of the surface. This index can be interpreted in mater of connectivity taken into account that concavity indicates connectivity, and that convexity indicates isolated disconnected structures.

    The fragmentation index is calculated plane by plane for a 2D image by comparing area and perimeter (or volume and surface, respectively for a 3D image) of binarised image before and after an image dilation. It is defined :

    Where and are respectively a perimeter and an area. The subscript and means for before and after dilation.

    Dilation of an highly connected area will narrow spaces and then produce a smaller perimeter. On the other hand, open ends or nodes will have their perimeter expanded by surface dilation. As a result, lower fragmentation index signifies better connected area while higher fragmentation index means a more disconnected structure. In some case, high ratio of enclosed cavities and concave surfaces can result in fragmentation index to negative values.

    See Also:
    SoAverageObjectThicknessQuantification3d, SoObjectLinearDensityQuantification3d File format/default: FragmentationIndexQuantification { computeMode MODE_AUTO inBinaryImage NULL elementSize 3 } Library references: fragmentation

    • Constructor Detail

      • SoFragmentationIndexQuantification

        public SoFragmentationIndexQuantification()
        Constructor.