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Find shift and rotation between two images. [message #65142]

Thu, 12 February 2009 13:10

frankosuna
Messages: 31
Registered: February 2008

Member

Is there code out there to figure out by how many pixels an image is
shifted from it's original as well as the angle?

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Re: Find shift and rotation between two images. [message #65176 is a reply to message #65142]

Tue, 17 February 2009 07:09

KRDean
Messages: 69
Registered: July 2006

Member

On Feb 16, 7:07 pm, Thomas Launey <t_lau...@brain.riken.jp> wrote:
> Hello,
>
> I knew the Hongjie Xie code but I am curious about the Metcalf
> approach. Would you please provide a link
> Thanks,
> Thomas

The auto_algin_images.pro (by Metcalf) code can be found at the Solar
and Heliospheric observatory (SOHO) :

http://soho.nascom.nasa.gov/

The IDL code is located in :

http://soho.nascom.nasa.gov/softops/cds/idl/

I find you need :

auto_algin_images.pro (http://sohowww.nascom.nasa.gov/solarsoft/gen/
idl/image/)
pq2rss.pro (http://sohowww.nascom.nasa.gov/solarsoft/gen/idl/
image/)
pq2pp.pro (http://sohowww.nascom.nasa.gov/solarsoft/gen/idl/image/)
rss2pq.pro (http://sohowww.nascom.nasa.gov/solarsoft/gen/idl/
image/)
amoebax.pro (http://sohowww.nascom.nasa.gov/solarsoft/gen/idl/
fitting/)
amotry.pro (http://sohowww.nascom.nasa.gov/solarsoft/gen/idl/
fitting/)
ocontour.pro (http://sohowww.nascom.nasa.gov/solarsoft/gen/idl/
display/)

pq2rss uses this routine ...
arange.pro (http://www.solar.ifa.hawaii.edu/Tropical/Bin/IDL/)

Kelly Dean
Fort Collins, CO

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Re: Find shift and rotation between two images. [message #65177 is a reply to message #65142]

Mon, 16 February 2009 18:12

frankosuna
Messages: 31
Registered: February 2008

Member

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Re: Find shift and rotation between two images. [message #65178 is a reply to message #65142]

Mon, 16 February 2009 18:07

Thomas Launey
Messages: 25
Registered: September 1999

Junior Member

Hello,

I knew the Hongjie Xie code but I am curious about the Metcalf
approach. Would you please provide a link
Thanks,
Thomas

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Re: Find shift and rotation between two images. [message #65213 is a reply to message #65142]

Sat, 14 February 2009 18:50

Vince Hradil
Messages: 574
Registered: December 1999

Senior Member

On Feb 14, 8:22 pm, kBob <KRD...@gmail.com> wrote:
> frankosuna wrote:
>> Is there code out there to figure out by how many pixels an image is
>> shifted from it's original as well as the angle?
>
> Image registration (shift and rotation) is a popular subject on this
> newsgroup. Have you looked for previous post on this topic in idl-
> pvwave?
>
> I found these two papers to be very helpful when I was investigating
> image registration techniques dealing with FFT using IDL to find shift
> and rotation.
>
> An IDL/ENVI implementation of the FFT-based algorithm for automatic
> image registration
> By Hongjie Xie
>
> and
>
> Understanding FFT- based algorithm to calculate image displacements
> with IDL programming language
> By Cynthia Rodriguez, University of Texas at San Antonio
>
> There is a Word DOC of Xie's paper at UTEP ...
>
> http://research.utep.edu/Default.aspx?PageContentMode=1& tabid=30376
>
> However, my favorite IDL image registration process are the auto
> alignment IDL routines by T. Metcalf that are found at SOHO. He
> doesn't use FFT's, but implements cross correlation techniques that
> work very well to find shift and rotation between images.
>
> Kelly Dean
> Fort Collins, CO

Wow - now there's a post chock full of info! Thanks Kelly!

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Re: Find shift and rotation between two images. [message #65214 is a reply to message #65142]

Sat, 14 February 2009 18:22

KRDean
Messages: 69
Registered: July 2006

Member

frankosuna wrote:
> Is there code out there to figure out by how many pixels an image is
> shifted from it's original as well as the angle?

Image registration (shift and rotation) is a popular subject on this
newsgroup. Have you looked for previous post on this topic in idl-
pvwave?

I found these two papers to be very helpful when I was investigating
image registration techniques dealing with FFT using IDL to find shift
and rotation.

An IDL/ENVI implementation of the FFT-based algorithm for automatic
image registration
By Hongjie Xie

and

Understanding FFT- based algorithm to calculate image displacements
with IDL programming language
By Cynthia Rodriguez, University of Texas at San Antonio

There is a Word DOC of Xie's paper at UTEP ...

http://research.utep.edu/Default.aspx?PageContentMode=1& tabid=30376

However, my favorite IDL image registration process are the auto
alignment IDL routines by T. Metcalf that are found at SOHO. He
doesn't use FFT's, but implements cross correlation techniques that
work very well to find shift and rotation between images.

Kelly Dean
Fort Collins, CO

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Re: Find shift and rotation between two images. [message #85059 is a reply to message #65142]

Thu, 27 June 2013 13:12

venom25
Messages: 1
Registered: June 2013

Junior Member

On Thursday, 12 February 2009 21:10:58 UTC, frankosuna wrote:
> Is there code out there to figure out by how many pixels an image is
> shifted from it's original as well as the angle?

Hello frankosuna and any friend,

I cannot find the the Hongjie code, Please help.

Than

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