PUBLIC

BoundaryC::BoundaryC(BooleanT) BoundaryC::BoundaryC(const BoundaryC &) BoundaryC::BoundaryC(const EdgeListC &,BooleanT) BoundaryC::BoundaryC(const DListC &,BooleanT) BoundaryC::BoundaryC(const IndexRectangleC &) BoundaryC::Area(void) const BoundaryC::Order(const EdgeC &,BooleanT) BoundaryC::Orient(void) const BoundaryC::BReverse(void) BoundaryC::Copy(void) const BoundaryC::ConvexHull(void) const BoundaryC::ConvexHullMM(void) const BoundaryC::BoundingBox(void) const BoundaryC::WriteCompressed(ostream &) const BoundaryC::ReadCompressed(istream &) BoundaryC::CreateHashtable(void) const BoundaryC::OrderContinuous(const RCHashARC> &,const EdgeC &,BooleanT) const BoundaryC::FindEndpoints(const RCHashARC> &) const

BoundaryC
Crack code boundary
include	"amma/Boundary.hh"
User Level:	Default
Library:	Mbnd
Example:	exMat2d.cc
Section:	Image.Image Processing.Edges
In Scope:	std

Comments:
The class BoundaryC represents the 4-connected oriented boundary of a image region.

public EdgeListC

RegionPolynBoundC

typedef LongIntT AreaT;

BooleanT orientation;

Orientation of the boundary. TRUE means that an object is on the left side of edges.

BoundaryC(BooleanT orient = TRUE)

Empty boundary with orientation 'orient'.

BoundaryC(const BoundaryC & list)

Another access to the same boundary (constructor for a big object).

BoundaryC(const EdgeListC & edgeList,BooleanT orient)

Create the boundary from the list of edges with a appropriate orientation. The 'edgelist' will be a part of boundary.

BoundaryC(const DListC<EdgePtrC> & edgeList,BooleanT orient = TRUE)

Creates the boundary from the list of pointers to the elementary edges. The orientation of the boundary is set according to 'orient'.

BoundaryC(const IndexRectangleC & rect)

The boundary of the rectangle as a hole

AreaT Area() const

Get the area of the region which is determined by the 'boundary'.

DListC<BoundaryC> Order(const EdgeC & firstEdge,BooleanT orient = TRUE)

Order the edgels of this boundary such that it can be traced continuously along the direction of the first edge. The orientation of the boundary is set according to 'orient'. If the boundary is open, 'firstEdge' and 'orient' are ignored.

BooleanT Orient() const

Return the orientation of the boundary.

BoundaryC & BReverse()

Revert the order of the edges.

BoundaryC Copy() const

Create a physical copy of the boundary.

EdgeCPtrListC ConvexHull() const

The convex hull is created from the original Jordan boundary using Melkman's method. Ref.: A V Melkman. On-line construction of the convex hull of a simple polyline. Information Processing Letters, 25(1):11-12, 1987. Ref.: M Sonka, V Hlavac: Image Processing.

EdgeCPtrListC ConvexHullMM() const

The convex hull is created from the original Jordan boundary using Marik&Matas's method.

IndexRectangleC BoundingBox() const

Get the bounding box of the boundary in "boundary's" coordinates.

void WriteCompressed(ostream & s) const

Save as ASCII characters in compressed format.

void ReadCompressed(istream & s)

Read a boundary stored in compressed format. The current object is deleted.

RCHashARC<BVertexC,PairC<BVertexC>> CreateHashtable() const

Returns the hashtable for the boundary; all end points which are only connected to one other point will have at least one invalid neighbour (-1, -1).

BoundaryC OrderContinuous(const RCHashARC<BVertexC,PairC<BVertexC>> & hashtable,const EdgeC & firstEdge,BooleanT orient) const

Returns a continous boundary; if the boundary is open, 'orient' will be ignored and 'firstEdge' must be one of the end points of the boundary.

DListC<BVertexC> FindEndpoints(const RCHashARC<BVertexC,PairC<BVertexC>> & hashtable) const

Returns the endpoints of the boundary, i.e. if the boundary is closed, the list will be empty.