[Insight-developers] ShapedNeighborhoodIterators
Miller, James V (Research)
millerjv at crd . ge . com
Tue, 27 May 2003 12:03:26 -0400
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Josh,
What is the recommended way to access the face connected neighbors of a
pixel using the NeighborhoodIterators? The options seem to be
NeighborhoodIterator:GetNext()/GetPrevious() and setting up a
ShapedNeighborhoodIterator.
The ShapedNeighborhoodIterator "should" be faster when moving the iterator
since it only updates a few of the pointers. But are there convenience
methods for activating the face connected neighbors (and the center pixel)
of an iterator? Or do I need to call ActivateOffset() manually for each face
connected pixel?
Jim
Jim Miller
_____________________________________
Visualization & Computer Vision
GE Research
Bldg. KW, Room C218B
P.O. Box 8, Schenectady NY 12301
millerjv at research . ge . com <mailto:millerjv at research . ge . com>
james . miller at research . ge . com
(518) 387-4005, Dial Comm: 8*833-4005,
Cell: (518) 505-7065, Fax: (518) 387-6981
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<DIV><FONT face=Arial size=2><SPAN
class=615504615-27052003>Josh,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=615504615-27052003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=615504615-27052003>What is the
recommended way to access the face connected neighbors of a pixel using the
NeighborhoodIterators? The options seem to be
NeighborhoodIterator:GetNext()/GetPrevious() and setting up a
ShapedNeighborhoodIterator.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=615504615-27052003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=615504615-27052003>The
ShapedNeighborhoodIterator "should" be faster when moving the iterator since it
only updates a few of the pointers. But are there convenience methods for
activating the face connected neighbors (and the center pixel) of an
iterator? Or do I need to call ActivateOffset() manually for each face
connected pixel?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=615504615-27052003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=615504615-27052003>Jim</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>
<P style="MARGIN: 0in 0in 0pt"><B><SPAN
style="COLOR: navy; FONT-FAMILY: 'Comic Sans MS'">Jim Miller</SPAN></B>
<BR><B><I><SPAN
style="FONT-SIZE: 10pt; COLOR: red; FONT-FAMILY: Arial">_____________________________________</SPAN></I></B><BR><EM><SPAN
style="FONT-SIZE: 7.5pt; COLOR: black; FONT-FAMILY: Arial">Visualization &
Computer Vision</SPAN></EM><I><SPAN
style="FONT-SIZE: 7.5pt; COLOR: black; FONT-FAMILY: Arial"><BR><EM>GE
Research</EM><BR><EM>Bldg. KW, Room C218B</EM><BR><EM>P.O. Box 8, Schenectady NY
12301</EM><BR><BR></SPAN></I><EM><U><SPAN
style="FONT-SIZE: 7.5pt; COLOR: blue"><A
href="mailto:millerjv at research . ge . com">millerjv at research . ge . com</A></SPAN></U></EM></P>
<P style="MARGIN: 0in 0in 0pt"><EM><U><SPAN
style="FONT-SIZE: 7.5pt; COLOR: blue">james . miller at research . ge . com</SPAN></U></EM><BR><I><SPAN
style="FONT-SIZE: 7.5pt; COLOR: black; FONT-FAMILY: Arial">(518) 387-4005, Dial
Comm: 8*833-4005, </SPAN></I><BR><I><SPAN
style="FONT-SIZE: 7.5pt; COLOR: black; FONT-FAMILY: Arial">Cell: (518) 505-7065,
Fax: (518) 387-6981</SPAN></I> </P></DIV>
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