Last edited on 2005-01-17 14:18:05 by stolfi

Fragment Re-Assembly Project - Datasets

Multiscale fragment re-assembly

Dataset ceramic-3 (unglazed):

An artificial but realistic dataset (ceramic-3) was generated by breaking five unglazed ceramic tiles into 112 fragments. This data set is available below as a collection of Unix tar/gzip archives. The numbers in brackets refer to the compressed archive and to the the uncompressed individual files, respectively.

• Dataset description (README file).
• Input images - PGM images of fragments as scanned, in four batches.
  [tgz 16 MB] [browse dir]
• Isolated fragments - individual PGM images and raw extracted outlines.
  [tgz 15 MB] [browse dir]
• Multiscale data - fragment outlines filtered at various scales of resolution.
  [tgz 40 MB] [browse dir]
• Non-fractures - list of outline portions that are not fracture lines.
  [tgz 5 KB] [browse dir]
• Ideal solution - pairs of outline segments that are known to be adjacent in the original objects.
  [tgz 1.9 MB] [browse dir]
• Reassembled puzzle - PGM images of the ceramic fragments, reassembled by hand into the original tiles.
  [tgz 8.6 MB] [browse dir]

Dataset glazed-1 (glazed):

A second artificial dataset (glazed-1) was generated by breaking nine glazed ceramic tiles into 402 fragments. This data set is available below as a collection of Unix tar/gzip archives. The numbers in brackets refer to the compressed archive and to the the uncompressed individual files, respectively.

• Dataset description (README file).
• Input images - PGM images of fragments as scanned, in four batches.
  [tgz 37 MB] [browse dir]
• Isolated fragment images - PGM/gzip format.
  [tgz 105 MB] [browse dir]
• Raw fragment outlines - sampled at irregularly spaced points.
  [tgz 7.4 MB] [browse dir]
• Filtered fragment outlines - uniformly sampled, at various scales.
  [tgz 63 MB] [browse dir]
  

Mutual information contents analysis

Datasets 2005-01-16-frb (unglazed)

• Dataset description (README file).
• Complete package including data and programs.
  [tgz 6.9 MB] [browse programs] [browse data]
• Fragment outlines for 112 shards obtained from flat unglazed ceramic tiles.
  These are the same outlines included in the ceramic-3 dataset above,
  at scale 001 (lambda = 1 pixel) only.
  [browse dir]
• True candidates - 50 close-fitting pairs of segments from those fragment outlines.
  [browse raw cands] [browse refined cands]
• False candidates - 50 random pairs of outline segments.
  [browse raw cands] [browse refined cands]