Filename extension .nrrd
Type of format Image 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 is intended to support scientific visualization and image processing applications.[1]

Utah Nrrd Utilities

The command-line tool unu (Utah Nrrd Utilities) is used for the manipulation and management of nrrd files.[1]

Written in C
Operating system Cross-platform


  1. 1 2 Aja-Fern├índez, 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.
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