Cathedral of Learning, Pittsburgh, Pa.
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Cathedral of Learning, Pittsburgh, Pa.
ARK
Name
2DbczeozNsmLeHNtDz3ALP
https://n2t.net/ark:/11635/2DbczeozNsmLeHNtDz3ALP
https://scanstation.ai/ark/11635/2DbczeozNsmLeHNtDz3ALP
File
| Order | 21 |
|---|---|
| Dimensions | 7968 × 5984 |
| Orientation | 0 |
| S3 Key | marac/003/derivatives/0021.jpg |
| Source Path | marac/003/derivatives/0021.jpg |
AI Enrichment
Summary
Postcard front showing a sepia architectural view of the Cathedral of Learning in Pittsburgh, Pennsylvania, with a small inset labeled Hotel Webster Hall; printed captions read “Cathedral of Learning” and “Pittsburgh, Pa.”
OCR Excerpt
HOTEL
WEBSTER
HALL
PITTSBURGH,
PA.
re)
<
z
a
<
w
ar
re
fe)
a
<
x
[ay
w
=
=
<
uu
Places
Pittsburgh, Pennsylvania
Type
photo_with_text
text_page
document
photo
people_photo
postcard
Tags
No tags assigned.
Primary: postcard
Searchable text
79 chars
1%
HOTEL WEBSTER HALL PITTSBURGH, PA. re) < z a < w ar re fe) a < x [ay w = = < uu
ai-tools@1.0
Tesseract via ai-tools (23 words, mean conf 61.2)
Subject: image:01KQHXRMP39JBSCK8FKCYC8GJH
17 predicates
| Predicate | Best value | Conf. | Source |
|---|---|---|---|
| ai:denseSummary |
Postcard front showing a sepia architectural view of the Cathedral of Learning in Pittsburgh, Pennsylvania, with a small inset labeled Hotel Webster Hall; printed captions read “Cathedral of Learning” and “Pittsburgh, Pa.”
|
1% | enrich_from_thumbnail@1.0 |
| ai:documentLikely |
yes
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
1% | ai-tools@1.0 |
| ai:handwrittenText | |||
| ai:hasText | yes | 1% | enrich_from_thumbnail@1.0 |
| ai:highResGoal |
none
Minor loss of fine architectural detail only; main cataloging evidence and printed location/title are already visible.
|
1% | enrich_from_thumbnail@1.0 |
| ai:isFilledForm | |||
| ai:isForm | |||
| ai:ocrText |
HOTEL
WEBSTER
HALL
PITTSBURGH,
PA.
re)
<
z
a
<
w
ar
re
fe)
a
<
x
[ay
w
=
=
<
uu
Tesseract via ai-tools (23 words, mean conf 61.2)
|
1% | ai-tools@1.0 |
| ai:peopleLikely |
yes
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
1% | ai-tools@1.0 |
| ai:photoLikely |
yes
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
1% | ai-tools@1.0 |
| ai:photoWithTextLikely |
yes
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
1% | ai-tools@1.0 |
| ai:pixelsDone |
yes
Thumbnail clearly captures the postcard front image and printed captions; no small handwritten or dense text requiring high-resolution review is visible.
|
1% | enrich_from_thumbnail@1.0 |
| ai:speculation |
This is likely a linen-era or mid-20th-century printed architectural postcard.
Monochrome sepia printing, postcard-front layout, and stylized high-contrast rendering are characteristic of mid-20th-century American view postcards.
|
1% | enrich_from_thumbnail@1.0 |
| ai:typedText | yes | 1% | enrich_from_thumbnail@1.0 |
| dcterms:spatial |
Pittsburgh, Pennsylvania
|
1% | aggregated |
| dcterms:title |
Cathedral of Learning, Pittsburgh, Pa.
|
1% | enrich_from_thumbnail@1.0 |
| dcterms:type |
text_page
OCR detected multi-word text; OCR confidence suggests printed text
|
5% | ai-tools@1.0 |
Subject: image:01KQHXRMP39JBSCK8FKCYC8GJH
0 claims
No claims recorded yet for this subject.
closed
— No more image calls. Item workflow consumes image claims/text/metadata for catalog-level analysis.
| Transition | Description | |
|---|---|---|
| upload | Pushes realPath (the ai-tools crop) to S3 as the canonical image. When defaults.full_frame_key is present, also archives the original mat under originals/ on S3 for re-processing / QR re-extraction during Python dev. The full-frame archive is planned to drop for real-client tenants. | |
| external_upload | Sets defaults["storage"]["mode"] = "external_url". Used by IIIF imports so the image remains accessible via its external URL and subsequent transitions can run against it directly. Skips triage — the UPLOADED place lets enrich run against the remote URL. | |
| triage | When fired from NEW: local-file mode. ai-tools reads defaults.full_frame_key + defaults.sidecar_key from the shared dir, produces the canonical crop + thumbnail in derivatives/, and returns deskew/type/detections. realPath is repointed at the crop. When re-run from TRIAGED: same, idempotent. Non-URL mode is the only path browser captures take. Failures keep the image in NEW (async retry). | |
| enrich | Single cheap AI call (~$0.0004) against a ≤512px thumbnail, with triage OCR + flags in context. Populates title/description/subjects/people/places/dense_summary and text-type flags. Can run from TRIAGED (using ssai image_view via imgProxy, skipping S3 upload) or from UPLOADED. Re-runnable from enriched for debugging. | |
| extract | The optional second image call. Runs only when enrich_from_thumbnail sets pixelsDone=false. Dispatches by extraction goal/signals: filled forms → ExtractMetadata; handwriting → TranscribeHandwriting; dense print/layout → OcrMistral. Re-runnable. | |
| close | Bookkeeping only. Requires pixelsDone=true. The item workflow performs text-only catalog analysis across all images. | Apply |
Subject: image:01KQHXRMP39JBSCK8FKCYC8GJH
23 claims
enrich_from_thumbnail@1.0
13
| Predicate | Value | Conf. | Basis |
|---|---|---|---|
| ai:denseSummary |
Postcard front showing a sepia architectural view of the Cathedral of Learning in Pittsburgh, Pennsylvania, with a small inset labeled Hotel Webster Hall; printed captions read “Cathedral of Learning” and “Pittsburgh, Pa.”
|
1% | — |
| ai:handwrittenText | — | ||
| ai:hasText | yes | 1% | — |
| ai:highResGoal |
none
|
1% |
Minor loss of fine architectural detail only; main cataloging evidence and printed location/title are already visible.
|
| ai:isFilledForm | — | ||
| ai:isForm | — | ||
| ai:pixelsDone | yes | 1% |
Thumbnail clearly captures the postcard front image and printed captions; no small handwritten or dense text requiring high-resolution review is visible.
|
| ai:speculation |
This is likely a linen-era or mid-20th-century printed architectural postcard.
|
1% |
Monochrome sepia printing, postcard-front layout, and stylized high-contrast rendering are characteristic of mid-20th-century American view postcards.
|
| ai:speculation |
The postcard was produced to highlight a landmark university building and nearby hotel for visitors to Pittsburgh.
|
1% |
The main image features the Cathedral of Learning while a smaller inset isolates Hotel Webster Hall, suggesting a promotional city-view composition.
|
| ai:typedText | yes | 1% | — |
| dcterms:spatial | Pittsburgh, Pennsylvania | 1% |
Printed caption at lower right reads 'PITTSBURGH, PA.'
|
| dcterms:title |
Cathedral of Learning, Pittsburgh, Pa.
|
1% | — |
| dcterms:type |
postcard
|
1% | — |
ai-tools@1.0
10
| Predicate | Value | Conf. | Basis |
|---|---|---|---|
| ai:documentLikely | yes | 1% |
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
| ai:hasText | yes | 1% |
Tesseract via ai-tools (23 words, mean conf 61.2)
|
| ai:peopleLikely | yes | 1% |
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
| ai:photoLikely | yes | 1% |
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
| ai:photoWithTextLikely | yes | 1% |
ai-tools heuristic on scan.storage:marac/003/0021.jpg
|
| dcterms:type |
photo_with_text
|
3% |
photo-like image with probable text regions
|
| dcterms:type |
text_page
|
5% |
OCR detected multi-word text; OCR confidence suggests printed text
|
| dcterms:type |
document
|
4% |
document outline covers 85% of frame; OCR suggests readable text
|
| dcterms:type |
photo
|
4% |
person detector suggests a photo; colorfulness 21.6 looks photographic
|
| dcterms:type |
people_photo
|
3% |
found 1 person-like region(s)
|