CCITT Group 4
From Just Solve the File Format Problem
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* [http://www.digitalpreservation.gov/formats/fdd/fdd000136.shtml ITU-T Group 4 FAX Compression (T.6), from Library of Congress resource on Sustainability of Digital Formats] | * [http://www.digitalpreservation.gov/formats/fdd/fdd000136.shtml ITU-T Group 4 FAX Compression (T.6), from Library of Congress resource on Sustainability of Digital Formats] | ||
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Revision as of 21:38, 11 November 2015
CCITT Group 4 is a widely-used lossless compression algorithm for bitonal images. It is also known as T6, T.6, Fax4, G4, Group 4, or ITU-T Fax Group 4. It is frequently used in TIFF images created by scanning bitonal images.It uses Modified Modified READ (MMR) compression. MMR is probably another synonym for CCITT Group 4.
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Related formats
In a TIFF file, compression type 4 is CCITT Group 4.
Other formats that can use CCITT Group 4 compression include PDF and SPIFF.
