03.3 Customize measure attributes

CustomAttribute This example demonstrates how to use the SoDataMeasureAttributes node in order to modify the attributes of a measure.

DESCRIPTION:

Some of the ImageViz native measures have attributes (measures related to Ferets diameters, histogram computation or cooccurrence matrix).

This example shows how to modify the attributes of a measure.

The Feret's diameter ratio computes the ratio between 2 Feret's diameter. Depending on the angular step used to compute the distribution of Feret's diameters, the precision of the result can change.

• The workflow is almost the same as the Label analysis example.
• Two different SoLabelAnalysisQuantification engines are intialized.
• The first one keeps the default distribution of Feret diameters (10 diameters, each 18 degrees).
• The second one takes a new distribution of Feret diameters (90 diameters, each 2 degrees).
• Both analysis are computed and both results of the most elongated particle are displayed to show the impact of this change.

NOTE:

• When a measure contains attributes a link to the attribute API is given in the relate SoDataMeasurePredefined enumerate.
• For more information about image analysis, see section Image Analysis .

SEE ALSO

SoDataMeasureAttributes, SoLabelAnalysisQuantification

SCREENSHOT:

FILES:

• ImageViz/GettingStarted/03.3.CustomAttribute.cxx