bwboundaries
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bwboundaries
Trace region boundaries in binary image
Syntax
- example
B = bwboundaries(BW)
B = bwboundaries(BW,conn)
- example
B = bwboundaries(BW,conn,options)
- example
[B,L]= bwboundaries(___)
- example
[B,L,N,A] = bwboundaries(___)
Description
example
traces the exterior boundaries of objects, as well as boundaries of holes inside these objects, in the binary image B
= bwboundaries(BW
)BW
. bwboundaries
also descends into the outermost objects (parents) and traces their children (objects completely enclosed by the parents).
Returns B
, a cell array of boundary pixel locations.
traces the exterior boundaries of objects, where B
= bwboundaries(BW
,conn
)conn
specifies the connectivity to use when tracing parent and child boundaries.
example
traces the exterior boundaries of objects, where B
= bwboundaries(BW
,conn
,options
)options
is either the string 'holes'
or 'noholes'
, specifying whether you want to include the boundaries of holes inside other objects.
example
[
returns a label matrix B
,L
]= bwboundaries(___)L
where objects and holes are labeled.
example
[
returns B
,L
,N
,A
] = bwboundaries(___)N
, the number of objects found, and A
, an adjacency matrix.
Code Generation support: Yes.
MATLAB® Function Block support: No.
Examples
Input Arguments
Output Arguments
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