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Common transform file format (.x5)
The goal of this project is to unify affine, non-linear and composite transforms in a single, open file format.
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.