The CALS Raster file format is a standard for the interchange of graphics data. It was developed by the

United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national secur ...

(DoD) as part of the

Continuous Acquisition and Life-cycle Support Continuous Acquisition and Life-cycle Support (CALS) is a United States Department of Defense initiative for electronically capturing military documentation and linking related information. The initiative has developed a number of standard specif ...

(CALS) initiative. It defines a standard storing raster (bit-mapped) image data, either uncompressed or compressed using

CCITT Group 4 CCITT Group 4 compression, also referred to as G4 or Modified Modified READ (MMR), is a lossless method of image compression used in Group 4 fax machines defined in the ITU-T T.6 fax standard. It is only used for bitonal (black-and-white) images. ...

compression.

References

* MIL-R-28002 Requirement for Raster Graphics Representation in Binary Format * MIL-PRF-28002

External links

CALS Raster File Format Summary
{{Graphics file formats Graphics file formats Technical communication