File Formats: TIFF CCITT and Other FAX Formats

LEADTOOLS supports reading and writing of the following 1-bit formats that are commonly used in FAX transmissions:

TIFF

• TIFF CCITT. These are compressed TIFF files that are commonly used for FAX transmission and document imaging.
• TIFF CCITT Group 3. These are TIFF CCITT files in a format that is more advanced and more compressed than TIFF CCITT. LEADTOOLS supports both 1-dimension and 2-dimension variations of this format.
• TIFF CCITT Group 4. These are TIFF CCITT files in a format that is more advanced and more compressed than TIFF CCITT Group 3.
• TIFF Class F. Class-F is the TIFF extension for fax documents. LEADTOOLS supports Class-F compatible tags.

Regions are saved automatically inside TIFF files. For more information, refer to Saving a Region. Note, however, that the ability to save a region inside a TIFF file must be unlocked. This requires a Document Imaging or Medical Imaging toolkit.

For more information refer to Tagged Image File Format (TIFF).

CALS

• CALS Raster(Type 1, 2, 3, and 4). These are CCITT Group 4 CALS raster files. CALS is a United States government standard. CALS3 are multipage files.

This format does not support regions.

The file constants associated with this file format are:

Required DLL: Leadtools.Codecs.Cal.Dll. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application .

See table below

IOCA

• IOCA (ICA). This is the Image Object Content Architecture developed by IBM. LEADTOOLS supports these files in an MO:DCA wrapper with embedded 1-bit CCITT Group 3 or Group 4 images. LEADTOOLS also supports IOCA files without an MO:DCA wrapper.

For more information refer to Image Object Content Architecture Format (IOCA/MODCA).

WinFax

• WinFax Group 3. This is a FAX format created by Delrina for Group 3 support.
• WinFax Group 4. This is a FAX format created by Delrina for Group 4 support.

The file constants associated with this file format are:

Required DLL: Leadtools.Codecs.Wfx.Dll. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application .

See table below

Raw FAX

• FAX Group 3. This is a raw FAX format (without a header) for Group 3 support. LEADTOOLS supports both 1-dimension and 2-dimension variations of this format.
• FAX Group 4. This is a raw FAX format (without a header) for Group 4 support.

The file constants associated with this file format are:

Required DLL: Leadtools.Codecs.Fax.Dll. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application .

See table below

MicrosoftFax

AWD. This is a Microsoft FAX format.

The file constants associated with this file format are:

Required DLL: Leadtools.Codecs.Awd.Dll. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application.

NOTE: The dll required to support this format is no longer shipped with LEADTOOLS. If you require support for this format, please contact Tech Support.

See table below

NOTE: This format does not support LEAD's redirected IO feature, therefore it cannot be used with the overloads of Load that take an inputstream parameter or FeedLoad.

LaserView LaserData

LaserView LaserData. The LaserData file format is a legacy Group 4 compressed FAX format.

The file constants associated with this file format are:

Required DLL: Leadtools.Codecs.Fax.Dll. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application .

See table below

TIFF-FX

These are Internet Fax files developed and used by Xerox. This format supports several types of compression, which allows the user or developer to use the compression that best suits his or her needs. In addition, this file format can be extended as the need arises. The following modes are supported:

Minimal Black and White: This mode uses binary MH compression (T.4).

Extended Black and White: This mode uses binary MH, MR and MMR compression (T.4 and T.6).

Lossless JBIG Black and White: This mode uses JBIG compression (T.85, T.82). (Document/Medical toolkits only).

Lossy Color and Grayscale: This mode uses JPEG compression (T.42, T.81).

Lossless Color and Grayscale: This mode uses JBIG compression (T.43, T.82). (Document/Medical toolkits only).

The default extensions used by this format is: TIFX, TIFF.

This file format does support multipage files.

The file constants associated with this file format are:

Required DLL: Leadtools.Codecs.Tfx.Dll. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Related Formats: TIFF - Tagged Image File Format.