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Task #4117 (new)

Opened 14 years ago

Last modified 5 years ago

Support for Group 3 Fax TIFF compression

Reported by: curtis Owned by:
Priority: major Milestone: Unscheduled
Component: Bio-Formats Version: OMERO-5.2.0
Keywords: codec, TiffReader, external, new-feature Cc: mahogny@…, bf@…
Resources: n.a. Referenced By: n.a.
References: n.a. Remaining Time: n.a.
Sprint: n.a.

Description (last modified by mlinkert)

Bio-Formats does not currently support CCITT T.4 bi-level encoding (Group 3 Fax) compression.

A sample dataset can be found at tiff/johan/20100118145019727.tif.

Change History (7)

comment:1 Changed 13 years ago by jmoore

imported from bio-formats:#467

comment:2 Changed 13 years ago by mlinkert

  • Description modified (diff)
  • Milestone changed from Unscheduled to OMERO-Beta4.3.2

comment:3 Changed 13 years ago by mlinkert

  • Milestone changed from OMERO-Beta4.3.2 to Unscheduled

comment:4 Changed 8 years ago by mlinkert

  • Keywords codec TiffReader external new-feature added
  • Owner mlinkert deleted
  • Priority changed from minor to major
  • Version set to OMERO-5.2.0

Bumping the priority, since this issue comes up semi-regularly. The spec for Group 3 fax encoding is in curated/specs/ITU-T-T.4.pdf, so this is primarily implementing the decompression algorithm as specified (plus a small change to the TiffCompression? class).

comment:6 Changed 5 years ago by mtbcarroll

  • Cc bf@… added

comment:7 Changed 5 years ago by mtbcarroll

  • Cc bf@… added; bf@… removed
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