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<BODY lang=ZH-CN style="TEXT-JUSTIFY-TRIM: punctuation; tab-interval: 21.0pt"
vLink=purple link=blue>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff size=2>The
line</FONT></SPAN></DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2>tmp->SetPixelContainer(pointer1->GetPixelContainer());</FONT></SPAN></DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2>copies a reference (pointer) from pointer1 to tmp. This is a
shallow copy of the pixel data. So any changes you make to the pixel data
in tmp is actually modifying the same pixel data from
pointer1.</FONT></SPAN></DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2>Instead of copying the pixel container, you'll need to call Allocate() on
tmp and then use iterators to copy the data from pointer1 to
tmp.</FONT></SPAN></DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2>Another option is to run you image through a filter, setting the
parameters of the filter to do nothing. For instance, you could use the
ShiftScaleImageFilter and set the Shift to zero and the Scale to one. This
is not the most efficient way to copy an image (since some trivial math is done)
but is a simple way to create a copy of an image.</FONT></SPAN></DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2>Jim</FONT></SPAN></DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=157364013-19072004><FONT face=Verdana color=#0000ff
size=2></FONT></SPAN> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Jiang
[mailto:jiang@TI.Uni-Trier.DE]<BR><B>Sent:</B> Monday, July 19, 2004 9:27
AM<BR><B>To:</B> ITK<BR><B>Subject:</B> [Insight-users] Copy one pointer's
content to another pointer<BR><BR></FONT></DIV>
<DIV class=Section1 style="LAYOUT-GRID: 15.6pt none">
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Hi
</SPAN></FONT><st1:PersonName><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">ITK</SPAN></FONT></st1:PersonName><FONT
face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">
users,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">I want
to copy one </SPAN></FONT><st1:PersonName><FONT face=Arial size=1><SPAN
lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">ITK</SPAN></FONT></st1:PersonName><FONT
face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">
pointer’s content to another </SPAN></FONT><st1:PersonName><FONT face=Arial
size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">ITK</SPAN></FONT></st1:PersonName><FONT
face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">
pointer, so that the operation <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN class=GramE><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">performed</SPAN></FONT></SPAN><FONT
face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"> on the
second pointer will not influence the first
pointer.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">I do it
as follow:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=DE
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-ansi-language: DE"><SPAN
style="mso-tab-count: 1">
</SPAN></SPAN></FONT><SPAN class=SpellE><FONT face=Arial size=1><SPAN
lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">WriteImageType::Pointer</SPAN></FONT></SPAN><FONT
face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">
pointer1 already exists and has some content<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><SPAN
style="mso-tab-count: 1">
</SPAN><SPAN class=SpellE>WriteImageType::Pointer</SPAN> <SPAN
class=SpellE>tmp</SPAN> = <SPAN class=SpellE>WriteImageType::<SPAN
class=GramE>New</SPAN></SPAN><SPAN class=GramE>(</SPAN>);//copy pointer1’s
content to <SPAN class=SpellE>tmp</SPAN><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><SPAN
style="mso-spacerun: yes"> </SPAN><SPAN class=SpellE><SPAN
class=GramE>tmp</SPAN></SPAN>-><SPAN
class=SpellE>SetRequestedRegion</SPAN>( pointer1-><SPAN
class=SpellE>GetRequestedRegion</SPAN>() );<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><SPAN
style="mso-spacerun: yes"> </SPAN><SPAN class=SpellE><SPAN
class=GramE>tmp</SPAN></SPAN>-><SPAN class=SpellE>SetBufferedRegion</SPAN>(
pointer1-><SPAN class=SpellE>GetBufferedRegion</SPAN>()
);<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><SPAN
style="mso-spacerun: yes"> </SPAN><SPAN class=SpellE><SPAN
class=GramE>tmp</SPAN></SPAN>-><SPAN
class=SpellE>SetLargestPossibleRegion</SPAN>( pointer -><SPAN
class=SpellE>GetLargestPossibleRegion</SPAN>() );<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><SPAN
style="mso-spacerun: yes"> </SPAN><SPAN class=SpellE><SPAN
class=GramE>tmp</SPAN></SPAN>-><SPAN
class=SpellE>SetPixelContainer</SPAN>(pointer1-><SPAN
class=SpellE>GetPixelContainer</SPAN>() );<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><SPAN
style="mso-spacerun: yes"> </SPAN><SPAN class=SpellE><SPAN
class=GramE>tmp</SPAN></SPAN>-><SPAN class=SpellE>CopyInformation</SPAN>(
pointer1 );<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Now I
can operate the <SPAN class=SpellE>tmp’s</SPAN> content. However it still
<SPAN class=GramE>affect</SPAN> pointer1. It seems that all operations
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN class=GramE><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">performed</SPAN></FONT></SPAN><FONT
face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"> on
<SPAN class=SpellE>tmp</SPAN> are same as performed on
pointer1.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">How can
I copy one pointer totally to another one?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Thanks!<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN class=SpellE><FONT face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Jiang</SPAN></FONT></SPAN><FONT
face=Arial size=1><SPAN lang=EN-GB
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>