CCITT Group 4

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Latest revision as of 01:33, 25 August 2020

File Format
Name CCITT Group 4
Ontology
LoCFDD fdd000136
PRONOM x-cmp/15
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.

Contents

[edit] 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.

[edit] See also

[edit] Specifications

[edit] Software

[edit] References

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