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Extension TIFF Tag T6Options

TIFF Tag T6Options

IFDImage
Code293 (hex 0x0125)
NameT6Options
LibTiff nameTIFFTAG_GROUP4OPTIONS
TypeLONG
Count1
Default0

Description

Options for Group 4 Fax compression

This field is made up of a set of 32 flag bits. Unused bits must be set to 0. Bit 0 is the low-order bit.

The specification defines these bits:

Bit 0 is unused and always 0.
Bit 1 is 1 if uncompressed mode is allowed in the encoding.

LibTiff defines the single significant bits as follows:

GROUP4OPT_UNCOMPRESSED = 2;

In earlier versions of TIFF, this tag was named Group4Options.

Readers should honor this option tag, and only this option tag, whenever Group 4 Fax encoding is specified for Compression.