[Insight-users] how to change 2D ITK-images to 3D Image Volume

[Bradley Lowekamp]

Hello,

To join a series of 2D image into a 3D volume you can you the JoinImageFilter:
http://www.itk.org/Insight/Doxygen/html/classitk_1_1JoinImageFilter.html

The extract a 2D image from a 3D volume you can use the ExtractImageFilter:
http://www.itk.org/Doxygen/html/classitk_1_1ExtractImageFilter.html

To extract a 3D volume from a 3D volume there are a few filter:
http://www.itk.org/Doxygen/html/classitk_1_1ExtractImageFilter.html
http://www.itk.org/Doxygen/html/classitk_1_1RegionOfInterestImageFilter.html
http://www.itk.org/Doxygen/html/classitk_1_1CropImageFilter.html

Hope that helps,
Brad

On Sep 24, 2013, at 11:14 AM, shiwei <swingsw89 at 163.com> wrote:

> Hi,all~
> 	As I first read a 3D Image Volume slice by slice,then after processing each slice I need to change them to a 3D volume for further processing, However, I can't use itk::ImageSeriesReader for my pixeltype now is double and it takes to much time to write out the 2D image first.
>        I wonder if there is a class to help me read the 2D slices directly to 3D volume just in the memory.Also, I still eager to know whether there is a class can direclty extract a part of 3D volume from a bigger one.Beacuse IF there is no way to deal with that ,I will have to change all the 2D images to 2D Array then combine them to 3D Array which I think may take a lot of time.
>        Do you have any way to figure this out? Thank you all !
> 
> 
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