comp.lang.idl-pvwave archive: archive » Cross-correlation of two images?

Home » Public Forums » archive » Cross-correlation of two images?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Cross-correlation of two images? [message #15681 is a reply to message #15652]

Mon, 07 June 1999 00:00

badastro
Messages: 7
Registered: August 1998

Junior Member

In comp.lang.idl-pvwave Craig Hamilton <cah@medeng.wfubmc.edu> wrote:

> I want to compute the cross-correlation of two images and have just
> had a browse of the documentation. Seems that I've got to put it
> together myself, either using convolv() after suitable transposition of
> one of the images, or either doing it using FFTs.

> I bet someone has already got a canned routine that does this.
> Am I right?

Yup. Go to:

http://idlastro.gsfc.nasa.gov/contents.html

Under "Image Manipulation" is a list of routines starting
with 'correl*'.

Or, you could take the total of each image in each
direction (y1 = total(image1,1) & x1 = total(image1,2)) and cross correlate
the 1D vectors.

* * * * * The Bad Astronomer * * * *

Phil Plait badastro@badastronomy.com
The Bad Astronomy Web Page: http://www.badastronomy.com

Report message to a moderator

[Message index]

		Cross-correlation of two images? By: Craig Hamilton on Wed, 02 June 1999 00:00
		Re: Cross-correlation of two images? By: badastro on Mon, 07 June 1999 00:00
		Re: Cross-correlation of two images? By: wbiagiot on Fri, 04 June 1999 00:00
		Re: Cross-correlation of two images? By: Carl G. Zimba on Tue, 22 June 1999 00:00

Previous Topic:	Re: bug in EIGENQL ?
Next Topic:	undefined procedure problem

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Mon Oct 27 05:15:21 PDT 2025

Total time taken to generate the page: 0.02787 seconds