[ITK-users] Conversion of itk::Image to other formats

[Scapegoat Sarthak]

Hi Lambert,

What you could do is to make a function what just takes in a file name as
input and call the templated ITK function inside as an inline function.
There is no way I know to do I/O in ITK without using templates.

Best,
Sarthak

On 10 March 2016 at 10:55, Lambert Zijp <ljzijp at gmail.com> wrote:

> Hi Scapegoat,
> Thank you for responding. What would the function prototype then be (of
> function that accepts any itk image. I mean, the syntax, preferably not
> templated)?
> Because I deal mostly with 3D or 4D signed short pixels (medical images),
> I keep them as they are: half the memory consumption and easier histogram
> computations.
>
> Greetings,
> Lambert
>
> On Thu, Mar 10, 2016 at 4:35 PM, Scapegoat Sarthak <
> scapegoat.sarthak at gmail.com> wrote:
>
>> I would advice you to perform a check on the image dimensions (2 or 3)
>> and keep the pixel type as float throughout. In any case you will be doing
>> computation so the extra memory is going to be helpful.
>>
>>
>> On 10 March 2016 at 10:28, Matt McCormick <matt.mccormick at kitware.com>
>> wrote:
>>
>>> Hi Lambert,
>>>
>>> This example shows how to read in an unknown image type. It
>>> demonstrates how to go between run-time type specification and the
>>> compile-image type specification of ITK.
>>>
>>>
>>> http://itk.org/ITKExamples/src/IO/ImageBase/ReadUnknownImageType/Documentation.html
>>>
>>> This approach could be used for your problem.
>>>
>>> HTH,
>>> Matt
>>>
>>> On Thu, Mar 10, 2016 at 9:56 AM, Lambert Zijp <ljzijp at gmail.com> wrote:
>>> > Dear itk users,
>>> > I'm new to itk and also not very proficient in C++...
>>> > I want to try some deformable registration methods implemented in itk,
>>> and
>>> > need to convert my own format of images and volumes to itk, and back.
>>> > For conversion to itk, I use 'ImportImageFilter', because I do not
>>> want to
>>> > make a copy of the pixels/voxels.
>>> > Converting itk images and volumes back to my own format, is giving me a
>>> > headache; I'm confused about 'Image', SmartPointer and ConstPointer and
>>> > template stuff.
>>> > Could you get me started by suggesting me a function prototype?
>>> >
>>> > Something like:
>>> > int ItkToMyFormat(MyFormat** ppMyFormat, itk::Image* pItkImage);
>>> >
>>> > The ItkImage can be any pixeltype, any dimension, and vector images
>>> should
>>> > also be accepted by the conversion routine. In that conversion
>>> function, and
>>> > need to be able to put a switch on pixeltype and number of dimensions.
>>> >
>>> > Greetings,
>>> > Lambert
>>> >
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>>
>>
>
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