Article · Wikipedia archive · Last revised Jun 14, 2026

Nrrd

Nrrd is a library and file format for the representation and processing of n-dimensional raster data. It was developed by Gordon Kindlmann to support scientific visualization and image processing applications.

Last revised
Jun 14, 2026
Read time
≈ 1 min
Length
109 w
Citations
3
Source
Wikipedia ↗
nrrd
Filename extension
.nrrd
Type of formatImage file formats
Open format?yes

Nrrd ("nearly raw raster data") is a library and file format for the representation and processing of n-dimensional raster data. It was developed by Gordon Kindlmann1 to support scientific visualization and image processing applications.2

Utah Nrrd Utilities

The command-line tool unu (Utah Nrrd Utilities) is used for the manipulation and management of nrrd files.2

unu
Written inC
Operating systemCross-platform
Websiteteem.sourceforge.net/unrrdu/index.html
References

References

  1. Kindlmann, Gordon (2019). "Gordon Kindlmann Software". University of Chicago. Retrieved 2021-07-17.
  2. Aja-Fernández, Santiago; de Luis Garcia, Rodrigo; Tao, Dacheng; Li, Xuelong (2009). Tensors in Image Processing and Computer Vision. Advances in Computer Vision and Pattern Recognition. Springer Science & Business Media. ISBN 9781848822993.