[Insight-developers] Negative mutual information

Miller, James V (Research) millerjv@crd.ge.com
Fri, 24 Jan 2003 12:27:51 -0500


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Is there any reason (for the code) for the mutual information image to image metric to return a
negative value?
 
>From the (abstract) definition of mutual information, this does not seem to plausible.
 
Before I dive into the code...

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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 

 

 

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<DIV><SPAN class=657392417-24012003><FONT size=2>Is there any reason (for the 
code) for the mutual information image to image metric to return a negative 
value?</FONT></SPAN></DIV>
<DIV><SPAN class=657392417-24012003><FONT size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=657392417-24012003><FONT size=2>From the (abstract) definition 
of mutual information, this does not seem to plausible.</FONT></SPAN></DIV>
<DIV><SPAN class=657392417-24012003><FONT size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=657392417-24012003><FONT size=2>Before I dive into the 
code...</FONT></SPAN></DIV>
<DIV class=Section1>
<P class=MsoNormal><?xml:namespace prefix = o ns = 
"urn:schemas-microsoft-com:office:office" /><o:p></o:p>&nbsp;</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 &amp; 
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>
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