CCITT Group 4
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| − | [[CCITT Group 4]] is a widely used lossless compression algorithm used for bitonal images. It is also known as '''T.6''', ''' | + | [[CCITT Group 4]] is a widely used lossless compression algorithm used for bitonal images. It is also known as '''T6''', '''T.6''', '''Fax4''', '''G4''', or '''ITU-T Fax Group 4'''. It is frequently used in [[TIFF]] images created by scanning bitonal images. |
It is based on [[Modified Modified READ]] (MMR) compression. | It is based on [[Modified Modified READ]] (MMR) compression. | ||
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In a [[TIFF]] file, compression type 4 is CCITT Group 4. | In a [[TIFF]] file, compression type 4 is CCITT Group 4. | ||
| − | + | Other formats that can use CCITT Group 4 compression include [[PDF]] and [[SPIFF]]. | |
== See also == | == See also == | ||
Revision as of 20:33, 28 February 2013
CCITT Group 4 is a widely used lossless compression algorithm used for bitonal images. It is also known as T6, T.6, Fax4, G4, or ITU-T Fax Group 4. It is frequently used in TIFF images created by scanning bitonal images.It is based on Modified Modified READ (MMR) compression.
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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.
