iccwrite (Image Processing Toolbox User's Guide)

Image Processing Toolbox User's Guide

Write ICC color profile to disk file

Syntax

```
P_new = iccwrite(P, filename)
```

Description

P_new = iccwrite(P, filename) writes the International Color Consortium (ICC) color profile data in structure P to the file specified by filename.

P is a structure representing an ICC profile in the data format returned by iccread and used by makecform and applycform to compute color-space transformations. P must contain all the tags and fields required by the ICC profile specification. Some fields may be inconsistent, however, because of interactive changes to the structure. For instance, the tag table may not be correct because tags may have been added, deleted, or modified since the tag table was constructed. iccwrite makes any necessary corrections to the profile structure before writing it to the file and returns this corrected structure in P_new.

iccwrite can write the color profile data using either Version 2 (ICC.1:2001-04) or Version 4 (ICC.1:2001-12) of the ICC specification, depending on the value of the Version field in the file profile header. If any required fields are missing, iccwrite errors. For more information about ICC profiles, visit the ICC web site, www.color.org.

Note iccwrite does not perform automatic conversions from one version of the ICC specification to another. Such conversions have to be done manually, by adding fields or modifying fields. Use isicc to validate a profile.

Notes

Portions of the implementation of iccwrite are derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm.

iccwrite does not support DeviceLink, Abstract, and Gray profiles.

Example

This example reads a profile into the MATLAB workspace and then exports it in a new file.

P = iccread('monitor.icm');
pmon = iccwrite(P, 'monitor2.icm');

See Also

applycform, iccread, isicc, makecform

iccread idct2