[Vv] Format for deformation fields in VV

[Vivien Delmon]

On 09/19/2013 04:48 PM, Simon Rit wrote:
> Please use the mailing list.
> I am not sure but I believe it is the downsampling factor, i.e.,
> display a vector every ten vectors in the vector field.

It is the down-sampling factor and it acts exactly as you said.

> Simon
>
> On Thu, Sep 19, 2013 at 4:39 PM, Bilal Tahir <b.tahir at sheffield.ac.uk> wrote:
>> Dear Simon,
>>
>> There are 3 options for the deformation overlay field: subsampling, scale
>> and width. I would like to know what units is the subsampling parameter in?
>> I.e. If I set to 10 does it mean that it displays vectors for every 10mm or
>> 10 voxels?
>>
>> Best wishes,
>>
>> Bilal
>>
>>
>>
>> ---------- Forwarded message ----------
>> From: Simon Rit <simon.rit at creatis.insa-lyon.fr>
>> Date: 18 September 2013 07:13
>> Subject: Re: [Vv] Format for deformation fields in VV
>> To: vv <vv at creatis.insa-lyon.fr>
>>
>>
>> Hi Bilal,
>> All the ITK formats should be accepted so if .nii.gz is readable ITK,
>> it is readable by VV. It's not because the format is not listed from
>> the gui that it cannot be read. Just give it a try from the command
>> line, e.g., vv image.mha --vf vf.nii.gz
>> The format is one file with the displacement vector at each point,
>> i.e., itk::Image< itk::Vector<float, 3>, 3>. The vector is in mm and
>> the location of the vector is given with the origin and spacing of the
>> image, as usual in ITK.
>> Simon
>>
>> On Tue, Sep 17, 2013 at 7:38 PM, Bilal Tahir <b.tahir at sheffield.ac.uk>
>> wrote:
>>> Dear VV community,
>>>
>>> I would like to visualize the deformation fields from image registration.
>>> I
>>> have been experimenting with ANTS registration which outputs warped and
>>> inverse deformation fields in .nii.gz format but I noticed that .nii.gz
>>> format was not among the list of supported formats - only the .nii format.
>>>
>>> In addition, I would like to know if VV requires a specific format to view
>>> the deformation fields? I.e. does it need the X,Y,Z images in one file or
>>> as
>>> 3 separate images? In addition does it have any requirements on the
>>> intensity values of the X, Y, Z images in terms of coordinate systems?
>>>
>>> Best wishes,
>>>
>>> Bilal Tahir,
>>> James Morrison Researcher in Radiotherapy Imaging,
>>> Department of Clinical Oncology,
>>> University of Sheffield
>>>
>>> _______________________________________________
>>> vv mailing list
>>> vv at creatis.insa-lyon.fr
>>> http://www.creatis.insa-lyon.fr/mailman/listinfo/vv
>>>
>> _______________________________________________
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>> vv at creatis.insa-lyon.fr
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>>
>>
>>
>> --
>> Bilal Tahir,
>> James Morrison Researcher in Radiotherapy Imaging,
>> Department of Clinical Oncology,
>> University of Sheffield
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>


-- 
Vivien Delmon
PhD student at CREATIS, Lyon
Supported by ANRT and ELEKTA
http://www.creatis.insa-lyon.fr/rio

Bibliothèque logicielle :
On retrouve parfois le terme librairie issu du faux ami anglais library.
Librairie se traduisant bookshop en anglais c'est donc un abus de
langage et une erreur. (Wikipedia)