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Region Features

Select a function from the list below.

Icon	Name	Description
	RegionArea	Computes the number of pixels contained in a region.
	RegionBoundingBox	Computes the smallest box containing a region.
	RegionBoundingBox_OrNil	Computes the smallest box containing a region; returns NIL if the region is empty.
	RegionBoundingCircle	Computes the smallest circle enclosing a region.
	RegionBoundingCircle_OrNil	Computes the smallest circle enclosing a region; returns NIL if the region is empty.
	RegionBoundingParallelogram	Computes the smallest parallelogram containing a region.
	RegionBoundingRectangle	Computes the smallest rectangle containing a region.
	RegionBoundingRectangle_FixedAngle	Computes the smallest rectangle with the given orientation angle containing a region.
	RegionBoundingRectangle_FixedAngle_OrNil	Computes the smallest rectangle with the given orientation angle containing a region; returns NIL if the region is empty.
	RegionBoundingRectangle_OrNil	Computes the smallest rectangle containing a region; returns NIL if the region is empty.
	RegionCaliperDiameter	Computes the longest and the shortest width of the input region measured as distance between parallel lines containing the whole region.
	RegionCircularity	Computes the area of a region divided by the area of a circular region having the same feature.
	RegionContours	Computes an array of closed paths corresponding to the contours of the input region.
	RegionConvexity	Computes the area of a region divided by area of its convex hull.
	RegionDiameter	Computes the longest segment connecting two pixels contained in region and its length.
	RegionEllipticAxes	Computes axes of an ellipse having the same first and second order moments as the given region.
	RegionElongation	Computes the elongation factor of a region ( perfect circle has minimal elongation equal 1.0 ).
	RegionHoles	Creates regions of the holes of the input region.
	RegionInscribedBox	Computes the largest box contained in a region.
	RegionInscribedCircle	Computes the largest circle contained in a region.
	RegionMassCenter	Computes a point with coordinates equal to the average coordinates of the region's pixels.
	RegionMassCenter_OrNil	Computes a point with coordinates equal to the average coordinates of the region's pixels; returns NIL if the region is empty.
	RegionMedialAxis	Computes an array of paths corresponding to the skeleton of the input region.
	RegionMoment	Computes selected second-order moment of a region in regular and normalized ( divided by region area ) variant.
	RegionNumberOfHoles	Computes the number of holes in a region.
	RegionOrientation	Computes the orientation of a region as an angle of value in range 0.0 - 180.0.
	RegionPerimeterLength	Computes the length of the input region perimeter.
	RegionPointRunLengths	Returns the lengths of horizontal sequences of locations that constitute the input region.
	RegionProjection	Computes the profile of the region pixel count in consecutive rows or columns.
	RegionRectangularity	Computes the area of a region divided by the area of its bounding rectangle.