[Insight-users] HAMMER registration method (Patented ?)

Bill Lorensen bill.lorensen at gmail.com
Tue Sep 23 14:06:17 EDT 2008

Personally, I think it's a bigger loss for HAMMER that we can't
implement it in itk.


On Tue, Sep 23, 2008 at 1:43 PM, Torsten Rohlfing
<torsten at synapse.sri.com> wrote:
> First of all, thanks Luis for diligently digging up this patent
> application. I have two comments.
> On a general level, might it be worth for the ITK community to start
> looking into gathering this sort of information, i.e., references to
> patents and patent applications on algorithms of potential interest to
> the toolkit? This could be done with the express intention to use the
> community expertise to find prior art.
> Specifically relating to HAMMER -- sorry, but none of the HAMMER
> publications ever convinced me that the algorithm can do anything that
> other nonrigid registration methods can't. In addition, the original
> HAMMER requires an image segmentation (tissues), and segmentation errors
> will necessarily generate registration errors. There is an extension to
> the algorithm that I vaguely recall which works on intensity data, but
> again, I can't remember seeing any evidence in any publication that this
> method is superior in any way to the B-spline or Demons algorithms. I'd
> gladly stand corrected if I am missing something here, but this my
> current impression.
> Bottom line -- is it really such a big loss for ITK that we probably
> can't implement HAMMER?
> TR
> --
> Torsten Rohlfing, PhD          SRI International, Neuroscience Program
>  Research Scientist             333 Ravenswood Ave, Menlo Park, CA 94025
>  Phone: ++1 (650) 859-3379      Fax: ++1 (650) 859-2743
>   torsten at synapse.sri.com        http://www.stanford.edu/~rohlfing/
>     "Though this be madness, yet there is a method in't"
> _______________________________________________
> Insight-users mailing list
> Insight-users at itk.org
> http://www.itk.org/mailman/listinfo/insight-users

More information about the Insight-users mailing list