function?dss?=?diffss（ss）
%?DIFFSS??Difference?of?scale?space
%???DSS=DIFFSS（SS）?returns?a?scale?space?DSS?obtained?by?subtracting
%???consecutive?levels?of?the?scale?space?SS.
%
%???In?SIFT?this?function?is?used?to?compute?the?difference?of
%???Gaussian?scale?space?from?the?Gaussian?scale?space?of?an?image.
%
%???See?also?GAUSSIANSS（）?PDF:SIFT.USER.SS.

%?AUTORIGHTS
%?Copyright?（c）?2006?The?Regents?of?the?University?of?California.
%?All?Rights?Reserved.
%
%?Created?by?Andrea?Vedaldi
%?UCLA?Vision?Lab?-?Department?of?Computer?Science
%
%?Permission?to?use?copy?modify?and?distribute?this?software?and?its
%?documentation?for?educational?research?and?non-profit?purposes
%?without?fee?and?without?a?written?agreement?is?hereby?granted
%?provided?that?the?above?copyright?notice?this?paragraph?and?the
%?following?three?paragraphs?appear?in?all?copies.
%
%?This?software?program?and?documentation?are?copyrighted?by?The?Regents
%?of?the?University?of?California.?The?software?program?and
%?documentation?are?supplied?“as?is“?without?any?accompanying?services
%?from?The?Regents.?The?Regents?does?not?warrant?that?the?operation?of
%?the?program?will?be?uninterrupted?or?error-free.?The?end-user
%?understands?that?the?program?was?developed?for?research?purposes?and
%?is?advised?not?to?rely?exclusively?on?the?program?for?any?reason.
%
%?This?software?embodies?a?method?for?which?the?following?patent?has
%?been?issued:?“Method?and?apparatus?for?identifying?scale?invariant
%?features?in?an?image?and?use?of?same?for?locating?an?object?in?an
%?image“?David?G.?Lowe?US?Patent?6711293?（March?23
%?2004）.?Provisional?application?filed?March?8?1999.?Asignee:?The
%?University?of?British?Columbia.
%
%?IN?NO?EVENT?SHALL?THE?UNIVERSITY?OF?CALIFORNIA?BE?LIABLE?TO?ANY?PARTY
%?FOR?DIRECT?INDIRECT?SPECIAL?INCIDENTAL?OR?CONSEQUENTIAL?DAMAGES
%?INCLUDING?LOST?PROFITS?ARISING?OUT?OF?THE?USE?OF?THIS?SOFTWARE?AND
%?ITS?DOCUMENTATION?EVEN?IF?THE?UNIVERSITY?OF?CALIFORNIA?HAS?BEEN
%?ADVISED?OF?THE?POSSIBILITY?OF?SUCH?DAMAGE.?THE?UNIVERSITY?OF
%?CALIFORNIA?SPECIFICALLY?DISCLAIMS?ANY?WARRANTIES?INCLUDING?BUT?NOT
%?LIMITED?TO?THE?IMPLIED?WARRANTIES?OF?MERCHANTABILITY?AND?FITNESS?FOR
%?A?PARTICULAR?PURPOSE.?THE?SOFTWARE?PROVIDED?HEREUNDER?IS?ON?AN?“AS?IS“
%?BASIS?AND?THE?UNIVERSITY?OF?CALIFORNIA?HAS?NO?OBLIGATIONS?TO?PROVIDE
%?MAINTENANCE?SUPPORT?UPDATES?ENHANCEMENTS?OR?MODIFICATIONS.

dss.smin?=?ss.smin?;
dss.smax?=?ss.smax-1?;
dss.omin?=?ss.omin?;
dss.O?=?ss.O?;
dss.S?=?ss.S?;
dss.sigma0?=?ss.sigma0?;

for?o=1:dss.O
??%?Can?be?done?at?once?but?it?turns?out?to?be?faster
??%?this?way
??[MNS]?=?size（ss.octave{o}）?;
??dss.octave{o}?=?zeros（MNS-1）?;
??for?s=1:S-1
????dss.octave{o}（::s）?=?...
????????ss.octave{o}（::s+1）?-?ss.octave{o}（::s）?;
??end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????148??2010-01-28?20:09??sift-0.9.19\.gitignore

?????文件??????72310??2010-01-28?20:09??sift-0.9.19\data\box.pgm

?????文件?????233055??2010-01-28?20:09??sift-0.9.19\data\box.sift

?????文件??????10060??2010-01-28?20:09??sift-0.9.19\data\circle.pgm

?????文件???????1362??2010-01-28?20:09??sift-0.9.19\data\circle.sift

?????文件?????464954??2010-01-28?20:09??sift-0.9.19\data\img3.jpg

?????文件?????467808??2010-01-28?20:09??sift-0.9.19\data\img5.jpg

?????文件?????275111??2010-01-28?20:09??sift-0.9.19\data\landscape-a.jpg

?????文件?????304723??2010-01-28?20:09??sift-0.9.19\data\landscape-b.jpg

?????文件??????11101??2010-01-28?20:09??sift-0.9.19\data\nest.png

?????文件??????17462??2010-01-28?20:09??sift-0.9.19\data\nest2.bmp

?????文件?????337980??2010-01-28?20:09??sift-0.9.19\data\vessel-1.pgm

?????文件?????337980??2010-01-28?20:09??sift-0.9.19\data\vessel-2.pgm

?????文件???????2792??2010-01-28?20:09??sift-0.9.19\diffss.m

?????文件????????246??2010-01-28?20:09??sift-0.9.19\doc\bibliography.bib

?????文件????????550??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor-AI.bb

?????文件?????475918??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor-AI.pdf

?????文件???????3275??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor-SAVED.tex

?????文件??????????8??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor.aux

?????文件??????13430??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor.log

?????文件?????443880??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor.pdf

?????文件???????3275??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor.tex

?????文件?????????13??2010-01-28?20:09??sift-0.9.19\doc\figures\sift-descriptor.wrm

?????文件??????48557??2010-01-28?20:09??sift-0.9.19\doc\figures\warmread.sty

?????文件????????239??2010-01-28?20:09??sift-0.9.19\doc\sift.bbl

?????文件??????22459??2010-01-28?20:09??sift-0.9.19\doc\sift.tex

?????文件???????6174??2010-01-28?20:09??sift-0.9.19\doc\visionlab.sty

?????文件???????7935??2010-01-28?20:09??sift-0.9.19\gaussianss.m

?????文件???????2353??2010-01-28?20:09??sift-0.9.19\imreadbw.m

?????文件???????3902??2010-01-28?20:09??sift-0.9.19\imsmooth.c

............此處省略39個文件信息