RegionsOperatorsmRgnMargination Method |
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A measure of the distribution of intensity between the center of a region and its edges.
Namespace: MediaCy.IQL.Operators
Assembly: MediaCy.IQL.Operators (in MediaCy.IQL.Operators.dll) Version: 3.1.0.0
SyntaxVB
<ExtensionAttribute> Public Shared Function mRgnMargination ( regions As McRegions ) As McMeasure
Parameters
- regions
- Type: MediaCy.IQL.FeaturesMcRegions
Return Value
Type: McMeasureUsage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type McRegions. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).RemarksmRgnMargination is derived from the second moment of inertia of a
region's pixels (those under or interior to its boundary, excluding any Holes).
This moment is the distribution of its intensity toward the edges from the center of
the object. A high margination indicates that most of the intensity is along
the object edges (a donut or ring shape), while a low margination indicates
that most of the intensity is near the geometric center of the object (more
of a 'gaussian' shape, with thin edges). A margination of 0.333 (1/3)
indicates that the object is uniform in intensity distribution.
Note that margination uses calibrated intensities for this calculation.
The measurement was originally described by
Young IT, Verbeek PW, and Mayall BH, Characterization of chromatin
distribution in cell nuclei. Cytometry, 1986. 7: p. 467-474.
This is a pixel-based measurement. So for regions created by the
McThreshold.Execute method or McFeatures.SetFromMask method (features of
Type mcftScanList), holes in the blob are significant.
See Also