Where can I find ICC profiles that use DToBx and BToDx tags?

[waacton]

In one my projects I've written an ICC profile parser to perform colour transforms, using this iccDEV reference implementation to generate validation data. I intend to extend the functionality to support DToBx and BToDx tags, but I've not been able to find any profiles that contain them.

Are there any profiles you can share that use these tags, for development purposes?

[xsscx]

@waacton

See https://github.com/xsscx/research/tree/main/extended-test-profiles/tag-checks

I am adding to it now. I apologize for delay in responding.

Fuzzing Corpus: https://github.com/xsscx/fuzz/tree/master/graphics/icc

If you are testing a parser try with this file https://github.com/xsscx/research/raw/refs/heads/main/extended-test-profiles/ub-npd-spectral-fuzzer-CIccApplyCmm-IccCmm_cpp-Line8845.icc which should provide a significant amount of coverage testing.

Additional profiles in https://github.com/xsscx/research with a profile generator https://github.com/xsscx/research/blob/main/iccanalyzer-lite/tests/synthesize_profiles.py and https://github.com/xsscx/research/blob/main/extended-test-profiles/tag-checks/synthesize_dtob_btod.py

• https://github.com/xsscx/research/raw/refs/heads/main/extended-test-profiles/tag-checks/dtob-bad-element-sig.icc
• https://github.com/xsscx/research/raw/refs/heads/main/extended-test-profiles/tag-checks/dtob-abstract.icc
• https://github.com/xsscx/research/raw/refs/heads/main/extended-test-profiles/tag-checks/btod-all-intents-no-dtob.icc

Many other samples... Please let me know if any additional profiles needed for testing.

Added

• 7 ICC profile classes (mntr, scnr, prtr, link, spac, abst, nmcl)
• 20+ tag types (para, chrm, clrt, clro, ncl2, meas, view, pseq, sf32, sig, dtim, mAB, mBA, mft2, curv, chad, MPET)
• Header edge cases, LUT/matrix conformance, cross-tag consistency, text/Unicode

[waacton]

@xsscx wonderful, thank you! This looks like it'll kickstart my testing, and I'll start a new discussion if I find there's a particular profile permutation I think I'm missing.