What is ISO/TS 23564 about?
ISO/TS 23564 specifies evaluating the colour transform accuracy in ICC profiles.
ISO/TS 23564 describes procedures for evaluating the accuracy of colorimetric rendering intents in ICC profiles.
ISO/TS 23564 applies to v4 ICC profiles made according to ISO 150761. ISO/TS 23564 does not apply to subjective tests of ICC profiles, such as for perceptual or saturation rendering intents, and it does not apply to high dynamic range colour media or spaces.
Who is ISO/TS 23564 for?
ISO/TS 23564 on evaluating colour transform accuracy in ICC profile is useful for:
- Image technology personnel
- Image technology manufacturers and suppliers
- Image technology professionals, including auditors, consultants, etc.
Why should you use ISO/TS 23564?
The guidelines in ISO/TS 23564 are provided to assist in the evaluation of the colorimetric rendering intent transforms in ICC v4 profiles. Any tolerances provided in ISO/TS 23564 are for guidance only and may not be suitable for all applications.
Two types of profile evaluation tests in ISO/TS 23564 may be performed on the media-relative colorimetric rendering intent (the BToA1Tag and the AToB1Tag) of an ICC profile. These tests apply the transform contained in the profile’s BToA1Tag and/or AToB1Tag and compare the results with an appropriate reference.
Round trip tests in ISO/TS 23564 determine the accuracy with which a given rendering intent within a profile is inverted, such that when a PCS value is converted to the device encoding and back to the PCS the difference is minimized.
Device model tests in ISO/TS 23564 of a profile determine the accuracy of the forward model with which the profile predicts the colourimetry of a given device encoding value or the accuracy with which the profile predicts the device encoding value that will produce a given colourimetry.
