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Image Cytometry Standard

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Title: Image Cytometry Standard  
Author: World Heritage Encyclopedia
Language: English
Subject: ICS, Linotype-Hell DaVinci, CALS Raster file format, FLIC (file format), Xar (graphics)
Collection: Graphics File Formats, Metadata
Publisher: World Heritage Encyclopedia

Image Cytometry Standard

The Image Cytometry Standard (ICS) is a digital multidimensional image file format used in life sciences microscopy. It stores not only the image data, but also the microscopic parameters describing the optics during the acquisition.

ICS was first proposed in: P. Dean, L. Mascio, D. Ow, D. Sudar, J. Mullikin, Proposed standard for image cytometry data files, Cytometry, n. 11, pp. 561-569, 1990 [1].

The original ICS file format actually uses two separate files: a text header file with .ics extension and other, much bigger and with the actual image data, with .ids extension. This allows the compression of the data while leaving the header file accessible.

On the other hand, the newer ICS2 file format uses only one single .ics file with both the header and the data together.

The .ics in the two-file format is a text file with fields separated by tabs, and lines ending with a newline character. In the newer ICS2 format this text header precedes the binary data.

The ICS format is capable to store:

  • multidimensional and multichannel data
  • images in 8, 16 or 32 bit integer, 32 or 64 bit floating point and floating point complex data
  • all microscopic parameters directly relevant to the image formation
  • free-form comments

External links

  • Sources for an ICS file reader/writer library:
  • Python interface to libics: pylibics
  • ICS opener for ImageJ.
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