File Formats: 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 single and multi-page files in a MO:DCA wrapper with embedded 1-bit CCITT, Group 3 or Group 4 images, IBM MMR and uncompressed IOCA. LEADTOOLS also supports IOCA files without the MO:DCA wrapper. LEADTOOLS loads and saves all these formats. LEADTOOLS can read and write 1-bit and 1-bit / 4-bit ICA images.

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 this file format, LEAD supports CCITT, G3(1D, 2D), CCIT G4, and IBM MMR compression. LEAD does not support RL4, and Color Compression used by OS/2.

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

File constants associated with this file format are:

Constant Read Support Write Support Description
AfpIcaAbic 1, 4 BPP 1, 4 BPP IOCA, compressed using ABIC, with MO:DCA wrapper and AFP prefix (multipage).
AfpIcaG31Dim 1 BPP 1 BPP IOCA, G3 1D compressed.
AfpIcaG32Dim 1 BPP 1 BPP IOCA, G3 2D compressed.
AfpIcaG4 1 BPP 1 BPP IOCA, G4 compressed.
AfpIcaUncompressed 1 BPP 1 BPP IOCA, uncompressed.
AfpIcaIbmMmr 1 BPP 1 BPP IOCA, IBM MMR compressed.
IcaG31Dim 1 BPP 1 BPP IOCA, compressed using CCITT group 3, 1 dimension.
IcaG32Dim 1 BPP 1 BPP IOCA, compressed using CCITT group 3, 2 dimensions.
IcaG4 1 BPP 1 BPP IOCA, compressed using CCITT group 4.
IcaIbmMmr 1 BPP 1 BPP IOCA, compressed using IBM MMR, with the MO:DCA wrapper.
IcaUncompressed 1 BPP 1 BPP IOCA, uncompressed, with the MO:DCA wrapper.
IcaJpeg 1 BPP 1 BPP IOCA, compressed using JPEG, with MO:DCA wrapper (multipage).
IcaJpeg411 1 BPP 1 BPP IOCA, compressed using JPEG 4:1:1, with MO:DCA wrapper (multipage). Also requires CMP DLL.
IcaJpeg422 1 BPP 1 BPP IOCA, compressed using JPEG 4:2:2, with MO:DCA wrapper (multipage). Also requires CMP DLL.
RawIcaAbic 1, 4 BPP 1, 4 BPP IOCA, compression using ABIC, without the MO:DCA wrapper (single page).
RawIcaG31Dim 1 BPP 1 BPP IOCA, compressed using CCITT group 3, 1 dimension, without the MO:DCA wrapper.
RawIcaG32Dim 1 BPP 1 BPP IOCA, compressed using CCITT group 3, 2 dimensions, without the MO:DCA wrapper.
RawIcaG4 1 BPP 1 BPP IOCA, compressed using CCITT group 4, without the MO:DCA wrapper.
RawIcaIbmMmr 1 BPP 1 BPP IOCA, compressed using IBM MMR, without the MO:DCA wrapper.
RawIcaUncompressed 1 BPP 1 BPP IOCA, uncompressed, without the MO:DCA wrapper.

Required DLL: Leadtools.Codecs.Ica.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: AFP - AFP Format, PTK - PTOCA Format, CAL - CALS Raster Format, FAX - Raw Fax Format, TIFF - Tagged Image File Format / CCITT.

Platform Support

Extension Module Value Win32 Win64 Net32 Net64 Linux Android Apple UWP MimeType Friendly Name
AfpIcaAbic ICA 191 image/x-ioca MO:DCA IOCA files with AFP prefix and ABIC Compression
AfpIcaG31Dim ICA 309 image/x-ioca MO:DCA IOCA - Files with AFP prefix and Fax G3 1D Compression
AfpIcaG32Dim ICA 310 image/x-ioca MO:DCA IOCA - Files with AFP prefix and Fax G3 2D Compression
AfpIcaG4 ICA 311 image/x-ioca MO:DCA IOCA - Files with AFP prefix and Fax G4 Compression
AfpIcaIbmMmr ICA 313 image/x-ioca MO:DCA IOCA - Files with AFP prefix and Fax G3 1D IBM MMR modified Compression (no EO
AfpIcaUncompressed ICA 312 image/x-ioca MO:DCA IOCA - Files with AFP prefix and no Compression
IcaG31Dim ICA 71 image/x-ioca IOCA ICA 1-Dimensional
IcaG32Dim ICA 72 image/x-ioca IOCA ICA 2-Dimensional
IcaG4 ICA 73 image/x-ioca IOCA ICA Group 4
IcaIbmMmr ICA 117 image/x-ioca IOCA ICA MMR Compressed
IcaJpeg ICA 377 image/x-ioca IOCA with MO:DCA wrapper - Multipage JPEG Compression
IcaJpeg411 ICA 378 image/x-ioca IOCA with MO:DCA wrapper - Multipage JPEG 4-1-1 Compression
IcaJpeg422 ICA 379 image/x-ioca IOCA with MO:DCA wrapper - Multipage JPEG 4-2-2 Compression
IcaUncompressed ICA 253 image/x-ioca IOCA ICA with no compression
RawIcaAbic ICA 184 image/x-ioca Raw IOCA ABIC
RawIcaG31Dim ICA 77 image/x-ioca Raw IOCA ICA - Group 3 1-Dimensional
RawIcaG32Dim ICA 78 image/x-ioca Raw IOCA ICA - Group 3 2-Dimensional
RawIcaG4 ICA 79 image/x-ioca Raw IOCA ICA - Group 4
RawIcaIbmMmr ICA 118 image/x-ioca Raw IOCA ICA MMR Compressed
RawIcaUncompressed ICA 254 image/x-ioca Raw IOCA ICA with no compression

For a complete list for supported file formats, see Summary of All Supported File Formats.

Help Version 20.0.2019.9.30
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Imaging, Medical, and Document