Creates a frame-shaped region with given parameters.

Creates a circular region corresponding to a given circle.

Creates an elliptic region of given bounding rectangle.

Creates a line region.

Creates a region along the given path.

Creates a frame-shaped region with given parameters.

Creates a ring-shaped region with given parameters.

Creates an empty region with a given frame.

Forms a region containing pixels of given locations.

Converts a region to an array of its pixel locations.

It may be considered explicit region decompression.

If the input region contains at least one pixel, then it is copied to the output; otherwise Nil is returned.

Secures against domain errors caused by empty regions, e.g. just before the RegionMassCenter filter is to be invoked.

Tests whether the size of a region doesn't equal zero.

Checks if the point-runs of the input region are correctly arranged (sorted, not overlapping etc.).

You only need to use this tool if you create regions from point-runs manually.

Computes the common part of two regions.

Computes the common part of regions appearing in consecutive iterations.

Computes a region containing pixels belonging to an odd number of array regions.

Computes a region containing pixels from both input regions.

Computes the union of regions appearing in consecutive iterations.

Computes the smallest box containing a region.

Computes the smallest circle enclosing a region.

Computes the smallest ellipse enclosing a region.

Computes the smallest parallelogram containing a region.

Computes the smallest rectangle with the given orientation angle containing a region.

Computes the smallest rectangle containing a region; returns NIL if the region is empty.

Computes the area of a region divided by the area of a circular region having the same feature.

Computes an array of closed paths corresponding to the contours of the input region.

Computes the longest segment connecting two pixels contained in region and its length.

Calculates how much more the input region's points are dispersed comparing to the points of a circle of the same area.

Computes the elongation factor of a region ( perfect circle has minimal elongation equal 1.0 ).

Creates regions of the holes of the input region.

Computes the largest box contained in a region.

Computes a point with coordinates equal to the average coordinates of the region's pixels.

Computes an array of paths corresponding to the skeleton of the input region.

Computes the number of holes in a region.

Computes the length of the input region perimeter.

Computes the profile of the region pixel count in consecutive rows or columns.

Computes the feature values of the input regions.

Diameter of the biggest inscribed circle.

Removes interior pixels from a region.

Computes the smallest convex polygon containing the input region.

Returns the top, right, bottom and left boundaries of the input region.

Splits a region into blobs, removes blobs not fulfilling the specified condition, and merges the rest back into one region.

Splits a region into an array of regions corresponding to its connected components.

Segmentation of a region into individual objects when the objects do not touch each other.

Splits a region into a fixed-size array of regions.

Performs a morphological black top hat (bottom hat) operation on a region using a predefined kernel.

Performs a morphological closing on a region using selected predefined kernel.

Filling-in small gaps in a region without making it thicker.

Splits common pixels of the input regions among these regions.

Use this filter to make sure that the regions of an array do not intersect.

Performs a morphological dilation on a region using an arbitrary kernel.

Making the region thicker in a non-symmetrical way or filling-in gaps of a particular shape.

Performs a morphological erosion on a region using an arbitrary kernel.

Making the region thinner in a non-symmetrical way or removing small parts of a particular shape.

Splits pixels of the input regions and their complement among these regions.

Use this filter to make sure that every pixel belongs to a region.

Performs a morphological opening on a region using an arbitrary kernel.

Removing small parts of a particular shape without making the region thinner.

Performs a hit-and-miss transformation on a region using arbitrary kernels.

Performs a morphological thickening on a region using predefined kernels.

Returns region of pixels witch collect minAmount of pixels in rectangle in input region.

Performs a morphological white top hat operation on a region using an arbitrary kernel.

Splits an array of regions according to the selected feature and range.

Use this filter when you have an array of regions and you want to select some of them for further processing.

Returns the region from the input array that corresponds to the largest computed feature value; returns NIL if the array or any region inside it is empty.

Use this filter when you have an array of regions and you want to select one of them that best matches some criterion.

Returns the region from the input array that corresponds to the smallest computed feature value; returns NIL if the array or any region inside it is empty.

Use this filter when you have an array of regions and you want to select one of them that best matches some criterion.

For each region returns which points lie inside of it.

Shifts source region so that it is contained in target region.

Selects regions according to the selected feature and range.

Use this filter when you have an array of regions and you want to select some of them for further processing. It is slightly faster than ClassifyRegions.

Tests which points lie inside a region.

Tests whether given regions are equal.

Tests whether two regions have non-empty intersection.

Aligns a region to a coordinate system.

Most typically used, when there is a region extracted after performing CropImageToRectangle. This filter makes it possible to align the region with the original image.

Creates a region from a quadrangular fragment of another one. The quadrangle must be convex.

Shrinks a region by the factor of two along each axis.

Mirrors a region across vertical or horizontal axis.

Enlarges or shrinks a region to new dimensions.

Rotates a region around a specified point.

Shrinks a region by a natural factor along each axis.

Flips and rotates a region so that x-coordinates are exchanged with y-coordinates.

Limits a region to a rectangular area.