[Insight-developers] add template parameters to optimizer base class

[Johnson, Hans J]

Luis,

I would vote for this and propose that the wrapping only use the double
precision version for backwards compatibility.

Hans

--
Hans J. Johnson, Ph.D.
hans-johnson at uiowa.edu
Assistant Professor of Psychiatry
University of Iowa Carver College of Medicine
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Iowa City, Iowa 52242
Phone:  319-353-8587







-----Original Message-----
From: Luis Ibanez <luis.ibanez at kitware.com>
Date: Wed, 30 Mar 2011 17:17:33 -0400
To: brian avants <stnava at gmail.com>, Gaëtan Lehmann
<gaetan.lehmann at jouy.inra.fr>
Cc: ITK <insight-developers at itk.org>
Subject: Re: [Insight-developers] add template parameters to optimizer
base class

Hi Brian,

We should check with Gaetan on the implications
that this new template parameter may have in the Wrapping...


       Luis


---------------------------------------------------------------------------
-------------
On Tue, Mar 29, 2011 at 5:19 PM, brian avants <stnava at gmail.com> wrote:
> hi everyone
>
> itkCostFunction defines the following:
>
> class ITK_EXPORT CostFunction:public Object
> {
> public:
>
> < snip >
>
>  /**  ParametersType typedef.
>   *  It defines a position in the optimization search space. */
>  typedef double                       ParametersValueType;
>  typedef Array< ParametersValueType > ParametersType;
>
> ....
>
> what we'd like to do is define ParametersValueType via a template
>parameter
> such that we can use float type.
>
> the motivation is to allow us to have Derivatives/Parameters that are
> float deformation fields or float BSpline parameter images that are
> then memory mapped to Parameter/DerivativeType arrays.
>
> does anyone have any objection?   we'd have to make changes to all the
> derived classes but these changes should be backward compatible
> because the default template parameter for ParametersValueType would
> be double ( as it currently is ).
>
> brian
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