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Common transform file format #5

effigies opened this issue Sep 14, 2018 · 0 comments

Common transform file format #5

effigies opened this issue Sep 14, 2018 · 0 comments


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effigies commented Sep 14, 2018

Project Title

Common transform file format (.x5)


Name Position Institute
Chris Markiewicz Software Developer Stanford University
Satra Ghosh MIT
Bob Cox Staff Scientist NIH

Project Summary

The goal of this project is to unify affine, non-linear and composite transforms in a single, open file format.

Project Significance

Most major neuroimaging software packages (AFNI, SPM, FSL, FreeSurfer) have independently produced formats and conventions for reading, writing and interpreting affine and non-linear transforms. As part of the BIDS effort, settling on a common transform format has proved desirable, which requires working closely with representatives of the major packages to ensure that the final format meets their needs without providing an insurmountable barrier to eventual adoption.

Progress Report

  • Bob Cox was consulted to elaborate on the representations and conventions of transformations in AFNI.
  • The X5 draft spec was updated to include data structures that are compatible (with simple conversions) with AFNI affine and displacement field transform formats.

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