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 multipage 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 multipage 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 multipage 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 8, 24BPP 8, 24BPP 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.

For details of the file formats supported across products and platforms, refer to File Format Comparison Chart.

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