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REGIONCONVEXHULL
Section: User Commands (1)
Updated: 16 Mar 1998
Index
NAME
regionConvexHull - find the convex hull of regions
SYNTAX
regionConvexHull [-nc <nc>] [-sort] [-split] [-bg <bg>]
[-opv <opv>] [-orn] [-oon] <inimage> <outimage>
DESCRIPTION
Finds the convex hull of all regions in the inputimage with pixel value LARGER than 0, and drawsthese convex regions into the output image. Theseregions may naturally overlap, and the result maythus (apparently) contain non-convex regions.
OPTIONS
Use only one of
-opv,-ornand
-oon.- -nc nc
- Neighbour connectedness: 4 or 8 (default 4). ncapplies toobjects (pixel value > 0). The opposite applies to thebackground (=0).
- -sort
- Sort regions with respect to object number, store in anobject-array.
- -split
- Split objects (except the background, the object with objectnumber 0) so that every region forms an independent object.
- -bg bg
- Initialize output with background bg(def: 0).
- -opv opv
- Output Pixel Value. Draw regions with opv(def: 255).
- -orn
- Output Region Number. Draw regions with regnr.
- -oon
- Output Object Number. Draw regions with objnr.
RESTRICTIONS
inimagemust have bands with pixel type unsigned byte.
outimagewill have bands with pixel type unsigned byte.
RETURN VALUE
0 => ok
1 => Usage (no arguments)
2 => Bad number of arguments
SEE ALSO
regionAnalyse(1),
regionConvexHull(3),
regionArea(3),
regionCreate(3),
regionDraw(3),
regionFree(3),
regionHistoUpdate(3),
regionHisto(3),
regionImoment(3),
regionInsertYline(3),
regionDeleteYline(3),
regionEndInsert(3),
regionXmean(3),
regionYmean(3),
regionMean(3),
regionXmin(3),
regionXmax(3),
regionYmin(3),
regionYmax(3),
regionMinMax(3),
regionCMoment(3),
regionPMoment(3),
regionMoment(3),
regionPerform(3),
regionPerimeter(3),
regionIsPoint(3),
regionPoint(3),
regionSearch(3),
regionSort(3),
regionCopy(3),
regionUnion(3),
regionOverlap(3),
regionNeighbor(3),
regionVolume(3),
regionYline(3)
FILES
region.h
AUTHOR
Tor Lønnestad, BLAB, Ifi, UiO
EXAMPLES
regionConvexHull -nc 8 -bg 255 -opv 0 \
mask.img maskNegConvex.img
ID
$Id: regionConvexHull.c,v 1.20 1997/01/16 16:07:37 svein Exp $
Index
- NAME
- SYNTAX
- DESCRIPTION
- OPTIONS
- RESTRICTIONS
- RETURN VALUE
- SEE ALSO
- FILES
- AUTHOR
- EXAMPLES
- ID
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