This project is a Java library for reading and writing NIfTI image volumes. This includes support for header metadata, various datatypes, and multichannel volumes. When a volume is read from a file, the image intensities are stored in a four-dimensional double array. The array indices match the order in the 'dim' array of the header.
A jar can be built using Apache Ant by executing 'ant' in the project directory. An example main class is included and the jar will execute it when run with the '-jar' option. The following example will print the volume dimensions and datatype to the console:
java -Xmx512M -jar niftijio.jar example.nii.gz
The file format specification can be found here:
http://nifti.nimh.nih.gov/nifti-1
The code for reading the header was derived from the following implementation:
http://niftilib.sourceforge.net
The code for little-endian streams is provided by Roedy Green:
http://mindprod.com/jgloss/endian.html
This is released under the MIT license. Any comments can be directed to Ryan Cabeen at cabeen@gmail.com