NAME¶
teem-unu - Utah Nrrd Utilities command-line interface
DESCRIPTION¶
"teem-unu"
is a command-line interface to much of the functionality in
"nrrd",
- a C library for raster data processing. Nrrd is one library
in the "Teem" collection of libraries. More information about
Teem is at <http://teem.sf.net>.
- Users are strongly encouraged to join the teem-users
mailing list:
- <http://lists.sourceforge.net/lists/listinfo/teem-users>.
This is the primary forum for feedback, questions, and feature
requests.
- The utility of unu is mainly as a pre-processing tool for
getting data
- into a type, encoding, format, or dimensions best suited
for some visualization or rendering task. Also, slices and projections are
effective ways to visually inspect the contents of a dataset. Especially
useful commands include make, resample, crop, slice, project, histo,
dhisto, quantize, and save. Full documentation for each command is shown
by typing the command alone, e.g., "unu make". Unu can process
CT and MRI volume datasets, grayscale and color images, time-varying
volumes of vector fields (5-D arrays), and more. Currently supported
formats are plain text files (2-D float arrays), NRRD, VTK structured
points, and PNG and PNM images. "unu make -bs -1"
can read from DICOM files. "unu save" can generate EPS files.
Supported encodings are raw, ascii, hex, gzip, and bzip2.
- Much of the functionality of unu derives from chaining
multiple
- invocations together with pipes ("|"), minimizing
the need to save out intermediate files. For example, if
"data.raw.gz" is a gzip'ed 256 x 256 x 80 volume of raw floats
written from a PC, then the following will save to "zsum.png" a
histogram equalized summation projection along the slowest axis:
- unu make -i data.raw.gz -t float -s
256 256 80 -e gzip -en little \
- | unu project -a 2 -m sum \ | unu heq
-b 2000 -s 1 \ | unu quantize -b 8 -o
zsum.png
- If unu or nrrd repeatedly proves itself useful for your
research, an
- acknowledgment to that effect in your publication would be
greatly appreciated, such as (for LaTeX): "Dataset processing
performed with the {\tt unu} tool (or the {\tt nrrd} library), part of the
{\tt Teem} toolkit available at {\tt
$<$http://teem.sf.net$>$}"
- Formats available: nrrd pnm png vtk text eps Nrrd data
encodings available: raw ascii hex gz bz2
SEE ALSO¶
The full documentation for
teem-unu is maintained as a Texinfo manual. If
the
info and
teem-unu programs are properly installed at your
site, the command
- info teem-unu
should give you access to the complete manual.