[Insight-users] How long does it take do you think ?

[tony hakki]

you are generally right, but in this algorithm when optimizer finds the best results it will be stoped by program not to wait  900 million iterations . I didn't think that it would need 900 million iterations. I thought at the beginning just assign 900 million any how it would not need 900 million  iterations. It has been still runnning :((


----- Original Message ----
From: Robert Tamburo <rjtst21 at pitt.edu>
To: tony hakki <tony2007vtk at yahoo.com>
Cc: insight-users at itk.org
Sent: Friday, March 30, 2007 4:39:08 PM
Subject: Re: [Insight-users] How long does it take do you think ?


I've never used this algorithm but 900 million iterations seems like insanity. Assume that each iteration takes either 1 millisecond (best case scenario?) or 1 second (worst case scenario?) then calculate how long 900 million iterations will take. You will probably want to rethink the number of iterations you're using. You may also want to set up  a convergence criteria to stop the registration. You may find that you only need a handful iterations to achieve acceptable results.


On Mar 30, 2007, at 3:34 AM, tony hakki wrote:


hello ;
I have tried to implement point set to image registration. My point set has 151 points(x,y,z),and the image 3D .raw image size is  
size = 329 527 181  and the resolution is res=  0.200068 0.200068 0.200068  .Is there anybody who is expert on registration  process to guess how long does  computer run  to finish registration process? my computer has 2.21 GHz processor, and 3 GB Ram . I assigned numberofiteration as 900.000.000 (900 million) and my computer has been runnning for 20 hours(yes ,20 hours:))),do you think this is normal?
Thanks
Tony 



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