Pastec Workshop, University of Edinburgh, 8 February 2017. Notes https://gist.github.com/drjwbaker/8b296c37cd547dd8b17205db689a7375

1. Image Recognition
with Pastec
Handout: http://bit.ly/2kptfLR
James Baker, Lecturer in Digital
History/Archives
University of Sussex
@j_w_baker
This work is licensed under a Creative
Commons Attribution-ShareAlike 4.0
International License. Exceptions: quotations,
embeds from external sources, logos, and
marked images.

2. @j_w_baker
pictures/1805/003895043-0-000107-2-[The-antiquities-of-Furness-1774-]-1805.jpg
pictures/1805/003895043-0-000093-2-[The-antiquities-of-Furness-1774-]-1805.jpg
Same woodcut, different printing

3. @j_w_baker
pictures/1805/001427428-0-000002-1-Schir-Ginkertounis-Garland-or-dawis-the-day-and-the-
Scottismanis-Garland-or-Schir-Andro-Wode-his-battell-wi-Schir-Stevin-Bull-Two-ancient-
poems-1805.jpg
pictures/1805/002302019-0-000002-1-Collegium-Bengalense-Carmen-cui-pr-mium-
Buchanan-um-a-senatu-Academi-Glasguensis-adjudicatum-est-1805.jpg
pictures/1805/003530071-0-000002-1-The-Poor-Man-s-Sabbath-etc-[A-poem-]-1805.jpg
pictures/1800/002981885-0-000002-1-Pre-existence-A-poem-in-the-style-and-manner-of-
Milton-etc-[By-Abel-Evans-]-1800.jpg
Same bookplate

4. @j_w_baker
pictures/1805/003607804-0-000221-1-[Poems-chiefly-written-in-retirement-The-
Fairy-of-the-Lake-a-dramatic-romance--1805.jpg
pictures/1805/001231823-0-000037-1-[The-Fig-Leaf-a-satirical-and-admonitory-
poem-Dedicated-to-the-fashionable-world-[By-B-P-Cutham-]-Second-edition-]-
1805.jpg
Same
embellishment
mirrored and
upside down

5. @j_w_baker
pictures/1800/000741009-0-000027-1-A-Descriptive-Review-of-the-Year-1799-
comprised-in-twelve-monthly-sections-[In-verse-]-1800.jpg
pictures/1800/000745995-0-000105-1-Essays-on-the-Progress-of-the-Vital-
Principle-from-the-Vegetable-to-the-Animal-Kingdoms-and-the-Soul-of-Man-
introductory-to-contemplations-on-Deity-MS-notes-[by-the-author]-1800.jpg
Same
embellishment with
one printed very
poorly

6. @j_w_baker
pictures/1810/003419768-02-001055-1-A-
System-of-Modern-Geography-or-the-natural-
and-political-history-of-the-presen-1810.jpg
pictures/1849/003592040-03-000045-1-The-
World-as-it-is-A-new-and-comprehensive-system-
of-Modern-Geography-physical-1849.jp
An image in another image

7. @j_w_baker
pictures/1806/000868209-01-000382-1-The-Poetical-Works-of-Erasmus-Darwin-
Containing-the-Botanic-Garden-and-t-1806.jpg
pictures/1850/001988654-01-000324-1-Pictorial-Half-hours-edited-by-C-K-1850.jpg
Two
illustrations
of the same
object at
different
orientations

8. @j_w_baker
pictures/1814/003549690-0-000059-1-Sketches-of-Russia-illustrated-with-fifteen-
engravings-1814.jpg
pictures/1831/003549691-0-000063-1-[Sketches-of-Russia-illustrated-with-fifteen-
engravings-]-1831.jpg
Coloured and monochrome versions of the same
print

9. @j_w_baker
pictures/1844/003172157-02-000207-1-Histoire-d-Angleterre-Nouvelle-e-dition-
augmente-e-de-plus-d-un-tiers-et-e-1844.jpg
pictures/1847/003323087-0-000225-1-A-New-and-Popular-Pictorial-Description-of-
England-Scotland-Ireland-Wales-an-1847.jpg
Cropped, rotated versions of the
same image

10. @j_w_baker
Hamming Distance
The Hamming distance between:
- “1rish” and “Irish” is 1.
- “1011101” and “1001001” is 2
and
is 1

11. @j_w_baker

12. @j_w_baker

13. @j_w_baker
References
Baumann, Ryan. ‘Finding Near-Matches in the Rijksmuseum with Pastec’. 3
November 2015. https://ryanfb.github.io/etc/2015/11/03/finding_near-
matches_in_the_rijksmuseum_with_pastec.html
Setting up Pastec as a Virtual Machine
https://gist.github.com/drjwbaker/17351599854801f9891c7e0211eed32e
Pastec http://pastec.io/doc/oss/
OpenCV http://opencv.org/
Visual Words https://en.wikipedia.org/wiki/Visual_Word
ORB Feature Detection http://scikit-image.org/docs/dev/auto_examples/plot_orb.html
Pastec develpers on their use of ORB
www.willowgarage.com/sites/default/files/orb_final.pdf

14. Image Recognition
with Pastec
James Baker, Lecturer in Digital
History/Archives
University of Sussex
@j_w_baker
This work is licensed under a Creative
Commons Attribution-ShareAlike 4.0
International License. Exceptions: quotations,
embeds from external sources, logos, and
marked images.