Re: Rotation of time series

Article View: comp.soft-sys.matlab

Article #148

Back to comp.soft-sys.matlab Previous Next

#148

From: Jordan Rosenthal
Date: Fri, 18 May 2001 13:21

32 lines
2235 bytes

David,

Huh?  If it is truly a one dimensional signal, then there is no
interpretation of a rotation, at least not in the conventional sense.

I guess, however, you could embed the time-series along a line in a higher
dimensional space.  So, for example, the time series could a particular row
of an image that can then be rotated to lie in a different direction.  Or
perhaps the time signal can be transformed into a different higher
dimensional space (e.g., time-frequency), rotated in this space, and then
transformed back.

Where did this come up?

Jordan

"David Page" <david@REMOVE_SPAM.imhost.com> wrote in message
news:Zq2N6.95550$2U.44352545@news2.rdc2.tx.home.com...
> Hi All,
>
> Its been a general problem in Image processing that the algorithms should
be
> rotational invariant. However time series are considered objects in one
> dimension.
>
> Does anybody have any ideas on what can be the physical interpretation of
> rotation of a time series by a certain angle?
>
> Thanks,
> David.
>
>

Technical Details

Message-ID: <9e37gi$pkl$1@news-int.gatech.edu>

Path:

arc1-ca.pugleaf.net!archiver1.sj.google.com!newsfeed.google.com!newsfeed.stanford.edu!canoe.uoregon.edu!logbridge.uoregon.edu!newsxfer.eecs.umich.edu!nntp.msen.com!uunet!ash.uu.net!finch!cc.gatech.edu!GT-News!not-for-mail

References: <Zq2N6.95550$2U.44352545@news2.rdc2.tx.home.com>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 106e3f,292e3b5d0cb2d15e
X-Google-Attributes: gid106e3f,public
X-Google-Thread: 10d67e,292e3b5d0cb2d15e
X-Google-Attributes: gid10d67e,public
X-Google-ArrivalTime: 2001-05-18 06:20:03 PST
Path: arc1-ca.pugleaf.net!archiver1.sj.google.com!newsfeed.google.com!newsfeed.stanford.edu!canoe.uoregon.edu!logbridge.uoregon.edu!newsxfer.eecs.umich.edu!nntp.msen.com!uunet!ash.uu.net!finch!cc.gatech.edu!GT-News!not-for-mail
From: "Jordan Rosenthal" <jr@ece.gatech.edu>
Newsgroups: comp.soft-sys.matlab,aus.mathematics
Subject: Re: Rotation of time series
Date: Fri, 18 May 2001 09:21:47 -0400
Organization: Georgia Institute of Technology, Atlanta GA, USA
Lines: 34
Message-ID: <9e37gi$pkl$1@news-int.gatech.edu>
References: <Zq2N6.95550$2U.44352545@news2.rdc2.tx.home.com>
NNTP-Posting-Host: unknown@ender.ece.gatech.edu
X-Trace: news-int.gatech.edu 990191954 26261 199.77.145.142 (18 May 2001 13:19:14 GMT)
X-Complaints-To: usenet@news.gatech.edu
NNTP-Posting-Date: 18 May 2001 13:19:14 GMT
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.50.4133.2400
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400

Reply to Parent Message