[Insight-developers] DifferenceOfGaussiansGradientImageFilter
Miller, James V (Research)
millerjv@crd.ge.com
Wed, 22 Jan 2003 11:34:08 -0500
This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible.
------_=_NextPart_001_01C2C233.9C83771E
Content-Type: text/plain;
charset="iso-8859-1"
I was just looking through the code for the DifferenceOfGaussiansGradientImageFilter. It looks to me
that
1) this code is inefficient. the same calculation is repeated done in an inner loop
2) the filter is is not handling no properly managing the input requested region
3) the calculation does not appear to be a difference of gaussian gradient calculation
What is the status of this filter? Is it under development?
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
Jim Miller
_____________________________________
Visualization & Computer Vision
GE Research
Bldg. KW, Room C218B
P.O. Box 8, Schenectady NY 12301
millerjv@research.ge.com <mailto:millerjv@research.ge.com>
james.miller@research.ge.com
(518) 387-4005, Dial Comm: 8*833-4005,
Cell: (518) 505-7065, Fax: (518) 387-6981
------_=_NextPart_001_01C2C233.9C83771E
Content-Type: text/html;
charset="iso-8859-1"
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2715.400" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=937263016-22012003><FONT size=2>I was just looking through the
code for the DifferenceOfGaussiansGradientImageFilter. It looks to me
that</FONT></SPAN></DIV>
<DIV><SPAN class=937263016-22012003><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=937263016-22012003><FONT size=2>1) this code is inefficient.
the same calculation is repeated done in an inner loop</FONT></SPAN></DIV>
<DIV><SPAN class=937263016-22012003><FONT size=2>2) the filter is is not
handling no properly managing the input requested region</FONT></SPAN></DIV>
<DIV><SPAN class=937263016-22012003><FONT size=2>3) the calculation does not
appear to be a difference of gaussian gradient calculation</FONT></SPAN></DIV>
<DIV><SPAN class=937263016-22012003><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=937263016-22012003><FONT size=2>What is the status of this
filter? Is it under development? </FONT></SPAN></DIV>
<DIV class=Section1>
<P class=MsoNormal> <?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></P>
<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@research.ge.com">millerjv@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@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>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV> </DIV></BODY></HTML>
------_=_NextPart_001_01C2C233.9C83771E--