[Vv] Format for deformation fields in VV

[Bilal Tahir]

Thanks


On 19 September 2013 15:49, Vivien Delmon <
vivien.delmon at creatis.insa-lyon.fr> wrote:

> 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<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
>>>>
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>>>>
>>>>  ______________________________**_________________
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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<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)
>
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>



-- 
Bilal Tahir,
James Morrison Researcher in Radiotherapy Imaging,
Department of Clinical Oncology,
University of Sheffield
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