Image Object Content Architecture Format (IOCA/MODCA)

The Image Object Content Architecture format was developed by IBM. This architecture provides a consistent way to represent images, including conventions and directions for processing and interchanging image information. LEADTOOLS supports 3 types of IOCA files:

1. Raw IOCA files. These files use the FILE_RAWICA_XXX defines. These files are single IOCA images and do not have the MO:DCA wrapper.

2. MO:DCA IOCA files. These files use the FILE_ICA_XXX defines. These files can be multipage and have the MO:DCA wrapper around the IOCA image.

3. AFP MO:DCA IOCA files. These files use the FILE_AFPICA_XXX defines. These files can be multipage and have the MO:DCA wrapper around the IOCA image prefixed with AFP.

LEADTOOLS supports the following 1-bit compressions: Fax Group 3 or Group 4 images, IBM MMR (Fax G3 1D without EOL), uncompressed and ABIC. LEADTOOLS also supports 4-bit files with ABIC compression only. LEADTOOLS also supports 8-bit and 8-bit files with JPEG compression only. LEAD loads and saves all these formats.

LEADTOOLS supports loading and saving multi-page files in this format.

The default extension used by this format is: ICA.

This file format does not support stamps or Lossless JPEG compression, but it does support multi-page files for the MO:DCA files. LEAD does not support RLE4, Color Compression used by OS/2.

File constants associated with this file format are:

Constant	Read Support	Write Support	Description
FILE_AFPICA_G3_1D	1 BPP	1 BPP	[309] IOCA, compressed using CCITT Group 3, 1 dimension, with MO:DCA wrapper and AFP prefix (multipage).
FILE_AFPICA_G3_2D	1 BPP	1 BPP	[310] IOCA, compressed using CCITT Group 3, 2 dimensions, with MO:DCA wrapper and AFP prefix (multipage).
FILE_AFPICA_G4	1 BPP	1 BPP	[311] IOCA, compressed using CCITT Group 4, with MO:DCA wrapper and AFP prefix (multipage).
FILE_AFPICA_IBM_MMR	1 BPP	1 BPP	[313] IOCA, IBM MMR compressed, with MO:DCA wrapper and AFP prefix (multipage).
FILE_AFPICA_UNCOMPRESSED	1 BPP	1 BPP	[312] IOCA, uncompressed, with MO:DCA wrapper and AFP prefix (multipage).
FILE_AFPICA_ABIC	1, 4 BPP	1, 4 BPP	[191] IOCA, compressed using ABIC, with MO:DCA wrapper and AFP prefix (multipage).
FILE_ICA_G3_1D	1 BPP	1 BPP	[71] IOCA, compressed using CCITT Group 3, 1 dimension , with MO:DCA wrapper (multipage).
FILE_ICA_G3_2D	1 BPP	1 BPP	[72] IOCA, compressed using CCITT Group 3, 2 dimensions, with MO:DCA wrapper (multipage).
FILE_ICA_G4	1 BPP	1 BPP	[73] Raw IOCA, compressed using CCITT Group 4, with MO:DCA wrapper (multipage).
FILE_ICA_IBM_MMR	1 BPP	1 BPP	[117] IOCA, compressed using IBM MMR, with MO:DCA wrapper (multipage).
FILE_ICA_UNCOMPRESSED	1 BPP	1 BPP	[253] IOCA, uncompressed, with MO:DCA wrapper (multipage).
FILE_ICA_ABIC	1, 4 BPP	1, 4 BPP	[190] IOCA, compressed using ABIC, with MO:DCA wrapper (multipage).
FILE_ICA_JPEG	8, 24BPP	8, 24BPP	[377] IOCA, compressed using JPEG, with MO:DCA wrapper (multipage).
FILE_ICA_JPEG_411	24 BPP	24 BPP	[378] IOCA, compressed using JPEG 4:1:1, with MO:DCA wrapper (multipage). Also requires CMP DLL.
FILE_ICA_JPEG_422	24 BPP	24BPP	[379] IOCA, compressed using JPEG 4:2:2, with MO:DCA wrapper (multipage). Also requires CMP DLL.
FILE_RAWICA_G3_1D	1 BPP	1 BPP	[77] IOCA, compressed using CCITT Group 3, 1 dimension, without the MO:DCA wrapper (single page).
FILE_RAWICA_G3_2D	1 BPP	1 BPP	[78] IOCA, compressed using CCITT Group 3, 2 dimensions, without the MO:DCA wrapper (single page).
FILE_RAWICA_G4	1 BPP	1 BPP	[79] IOCA, compressed using CCITT Group 4, without the MO:DCA wrapper (single page).
FILE_RAWICA_IBM_MMR	1 BPP	1 BPP	[118] IOCA, compressed using IBM MMR, without the MO:DCA wrapper (single page).
FILE_RAWICA_UNCOMPRESSED	1 BPP	1 BPP	[254] IOCA, uncompressed, without the MO:DCA wrapper (single page).
FILE_RAWICA_ABIC	1, 4 BPP	1, 4 BPP	[184] IOCA, compression using ABIC, without the MO:DCA wrapper (single page).