[Insight-developers] ReleaseData
Miller, James V (CRD)
millerjv@crd.ge.com
Fri, 12 Oct 2001 16:01:51 -0400
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I added Initialize() routines to Image, ImageAdaptor, ImageBase, ValarrayImageContainer and
ImportImageContainer. The release data mechanism should now be operational for these base image
objects.
ReleaseData usage:
filter1 = SomeFilter::New();
filter2 = SomeOtherFilter::New();
filter1->ReleaseDataFlagOn();
filter2->SetInput( filter1->GetOutput());
filter2->Update();
filter1 will release its bulk data once filter2 has executed. The assumption is that the buffer
between filter1 and filter2 is no longer necessary. If we then do
filter2->Modified();
filter2->Update();
filter1 will re-execute since its output was released after filter2 executed the first time. So
filter1 needs to regenerate its output so filter2 can re-execute. Again, after filter2 executes,
filter1 will release its output bulk data.
Todo:
1. Any other subclasses of ImageBase. Does BloxImage need an Initialize? (Damion), what about
Histogram (?)
2. PointSet, Mesh need Initialize methods (Will)
Jim Miller
_____________________________________
Visualization & Computer Vision
GE Corporate Research & Development
Bldg. KW, Room C218B
P.O. Box 8, Schenectady NY 12301
millerjv@crd.ge.com < mailto:millerjv@crd.ge.com <mailto:millerjv@crd.ge.com> >
(518) 387-4005, Dial Comm: 8*833-4005,
Cell: (518) 505-7065, Fax: (518) 387-6981
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<DIV><SPAN class=205435419-12102001><FONT size=2>I added Initialize() routines
to Image, ImageAdaptor, ImageBase, ValarrayImageContainer and
ImportImageContainer. The release data mechanism should now be operational
for these base image objects.</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2><STRONG><U>ReleaseData
usage:</U></STRONG></FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT
size=2><STRONG></STRONG></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2>filter1 =
SomeFilter::New();</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2>filter2 =
SomeOtherFilter::New();</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT
size=2>filter1->ReleaseDataFlagOn();</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2>filter2->SetInput(
filter1->GetOutput());</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT
size=2>filter2->Update();</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2>filter1 will release its bulk
data once filter2 has executed. The assumption is that the buffer between
filter1 and filter2 is no longer necessary. If we then do</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT
size=2>filter2->Modified();</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT
size=2>filter2->Update();</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2>filter1 will re-execute since
its output was released after filter2 executed the first time. So filter1
needs to regenerate its output so filter2 can re-execute. Again, after
filter2 executes, filter1 will release its output bulk data.</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001></SPAN><SPAN
class=205435419-12102001></SPAN><SPAN class=205435419-12102001></SPAN><SPAN
class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT
size=2><STRONG><U></U></STRONG></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT
size=2><STRONG><U>Todo:</U></STRONG></FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2>1. Any other subclasses of
ImageBase. Does BloxImage need an Initialize? (Damion), what about
Histogram (?)</FONT></SPAN></DIV>
<DIV><SPAN class=205435419-12102001><FONT size=2>2. PointSet, Mesh need
Initialize methods (Will)</FONT></SPAN></DIV><BR>
<P><B><FONT face="Comic Sans MS" color=#000080>Jim Miller</FONT></B>
<BR><B><I><FONT face=Arial color=#ff0000
size=2>_____________________________________</FONT></I></B><I></I><BR><I></I><I><FONT
face=Arial color=#000000 size=1>Visualization & Computer Vision<BR>GE
Corporate Research & Development<BR>Bldg. KW, Room C218B<BR>P.O. Box 8,
Schenectady NY 12301<BR><BR></FONT><U><FONT face=Arial color=#0000ff
size=1>millerjv@crd.ge.com <<A
href="mailto:millerjv@crd.ge.com">mailto:millerjv@crd.ge.com</A>></FONT></U></I><BR><I><FONT
face=Arial color=#000000 size=1>(518) 387-4005, Dial Comm: 8*833-4005,
</FONT></I><BR><I><FONT face=Arial color=#000000 size=1>Cell: (518) 505-7065,
Fax: (518) 387-6981</FONT></I> </P><BR>
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