Add CID blobs for ITK PR #6032 VTI ImageIO test fixtures#46
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hjmjohnson merged 1 commit intoInsightSoftwareConsortium:gh-pagesfrom May 1, 2026
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23 unique blobs (24 fixtures; two .raw payloads share content) for
Modules/IO/VTK/test/Input/ in the upstream ITK repository. The blobs
back the VTI reader/writer test suite (PR #6032 / branch vtiSupport)
and let the in-tree binaries be replaced by .cid pointer files so the
ITK source tree stops growing with binary fixtures.
Source files:
reco2D_16line.{vti,mha} (originally in-tree)
VTI_oblique_direction.{vti,mhd,raw} (Direction round-trip)
VTI_rgba_u8_appended_raw.{vti,mhd,raw} (RGBA appended-raw)
VTI_scalar_u8_appended_raw.{vti,mhd,raw} (scalar appended-raw)
VTI_scalar_f32_zlib_appended.{vti,mhd,raw} (zlib-compressed)
VTI_vector3_f32_zlib_appended.{vti,mhd,raw} (vector + zlib)
VTI_tensor_f32_ascii.{vti,mhd,raw} (symmetric tensor)
VTI_guard_lz4.vti (F-001 guard fixture)
VTI_guard_lzma.vti (F-002 guard fixture)
VTI_guard_multipiece.vti (F-005 guard fixture)
VTI_guard_unknown_compressor.vti (F-010 guard fixture)
Total uncompressed size ≈ 100 KB; well under the ExternalData ceiling.
The matching ITK PR (#6032) replaces each in-tree binary with
<filename>.cid containing the IPFS CIDv1 (sha2-256 raw) above so
ExternalData fetches it from one of the standard ITK content-link
gateways at test time.
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23 unique CID blobs (24 fixtures; two
.rawpayloads share content) for the test suite added by InsightSoftwareConsortium/ITK#6032. Once this lands, the in-tree binaries on PR #6032 can be replaced by<filename>.cidpointer files (already prepared on the local PR branch) so the ITK source tree stops growing with binary fixtures.Fixture set
reco2D_16line.{vti,mha}VTI_oblique_direction.{vti,mhd,raw}VTI_rgba_u8_appended_raw.{vti,mhd,raw}VTI_scalar_u8_appended_raw.{vti,mhd,raw}VTI_scalar_f32_zlib_appended.{vti,mhd,raw}VTI_vector3_f32_zlib_appended.{vti,mhd,raw}VTI_tensor_f32_ascii.{vti,mhd,raw}VTI_guard_lz4.vtiVTI_guard_lzma.vtiVTI_guard_multipiece.vtiVTI_guard_unknown_compressor.vtiAll produced by the deterministic Python-stdlib generator at
Modules/IO/VTK/test/generate_vti_fixtures.pyon the consumer PR. Total uncompressed ≈ 100 KB; well under any ExternalData ceiling.Verification
Each blob's filename is the IPFS CIDv1 (sha2-256 raw) of its bytes — computed via
ipfs add --cid-version=1 --only-hash --quieter <file>and verified to match whatbafkrei…returns fromipfs addon a fresh checkout. The consumer PR's<file>.cidpointer files contain the matching CIDs verbatim, soExternalDatacan resolve via any of the standard ITK gateways:https://insightsoftwareconsortium.github.io/ITKTestingData/CID/{cid}https://ipfs.io/ipfs/{cid}https://gateway.pinata.cloud/ipfs/{cid}https://cloudflare-ipfs.com/ipfs/{cid}https://dweb.link/ipfs/{cid}