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Filename extension
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 Kindlmann[1] to support scientific visualization and image processing applications.[2]

Utah Nrrd Utilities[edit]

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

Written inC
Operating systemCross-platform


  1. ^ Kindlmann, Gordon (2019). "Gordon Kindlmann Software". University of Chicago. Retrieved 2021-07-17.
  2. ^ a b 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.