Use JoinSeriesImageFilter to append 4D images into 5D

[cpinter (Csaba Pinter)]

Hi all,

I have a series of 4D images (3D + scalar component) with the same dimensions, scalar type, number of scalar components, and I’d like to append them into a single image (a time or other type of sequence of images) that would be in the end 5D (4D + component). Then I’d like to write the resulting 5D image into file using ImageFileWriter.

My question is whether this class can be safely used for this?
https://itk.org/Doxygen/html/classitk_1_1JoinSeriesImageFilter.html

Or if not, what other possibilities do I have within ITK?

This question is related to this thread:

Reading and writing of 5D images - a dimension disappears

Hi all, We’re trying to enable 3D Slicer to read and write vector image sequences (displacement field or velocity field: 3D spatial + component + time = 5 dimensions) into a single file. The format of choice is NRRD, and we thought the most correct way would be to use ITK’s NrrdImageIO (the alternative would be to improve vtkTeemNRRDWriter/Reader, but ITK is a much more core dependency than teem). I started testing the IO with a valid-looking 5D nrrd file that I created using pynrrd. The heade…

Thank you very much!

[dzenanz (Dženan Zukić)]

Join series should work. If it does not do exactly what you want, you could go a more manual path: construct a 5D image in memory, then use PasteImageFilter to populate it with constituent components.

[cpinter (Csaba Pinter)]

Thank you very much for the fast answer! I’ll try the join series filter first and if there are problems continue with what you suggested.

[cpinter (Csaba Pinter)]

Just for the record, it seems that JoinImageSeriesImageFilter does work. If some problem does arise I’ll report here.

Thanks for the help!