CCITT Group 4
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| − | + | [[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. | |
| − | [[CCITT Group 4]] is a widely used lossless compression algorithm | + | |
It uses [[Modified Modified READ]] (MMR) compression. '''MMR''' is probably another synonym for CCITT Group 4. | It uses [[Modified Modified READ]] (MMR) compression. '''MMR''' is probably another synonym for CCITT Group 4. | ||
Revision as of 19:48, 2 August 2013
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.
