Primjena multispektralnog slikovnog sustava u otkrivanju skrivenih detalja vodenih znakova iz povijesne knjižnične građe

master's thesis

• Author: Ivona Jurišić
• Mentor: Damir Modrić (mentor)
• Committee member: Katarina Itrić Ivanda (predsjednik povjerenstva)
• Committee member: Damir Modrić (član povjerenstva)
• Committee member: Ivan Budimir (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2023-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

Multispektralno snimanje omogućuje bilježenje širokog spektra elektromagnetskog
zračenja od vidljivog dijela spektra, uključujući infracrveni i ultraljubičasti dio spektra.
Ova tehnologija omogućuje dohvat informacija koje ljudsko oko ne može vidjeti, a
primjena je raznolika (medicina, šumarstvo, kontrola kvalitete hrane i lijekova, forenzika
i sl.). Jedna od primjena, na kojoj se ovaj rad temelji, je i detekcija vodenih znakova.
Upravo multispektralno snimanje omogućuje precizno detektiranje i prikazivanje
vodenih znakova čime se povjesničarima i drugim istraživačima pružaju važne
informacije o povijesnoj pozadini vremena u kojem je vodeni znak nastao. Nakon
snimanja, fotografije se obrađuju korištenjem određenih računalnih programa kako bi se
dobili konačni digitalni oblici vodenih znakova koji se mogu koristiti u daljnjim
istraživanjima.
Ovaj rad predstavlja dobru osnovu za daljnja istraživanja vodenih znakova ali je važno
biti pažljiv planiranju svih koraka istraživanja kako bi se osigurala pouzdanost i kvaliteta
rezultata.
Konačno, nakon što se dobije digitalizirani oblik vodenih znakova potrebno je provesti
daljnje analize kako bi se procijenila kvaliteta njihove rekonstrukcije. To uključuje
mjerenje njihove veličine i dubine, utvrđivanje točnosti njihovog položaja u odnosu na
tekst.

Abstract (english)

Multispectral recording enables the recording of a wide spectrum of electromagnetic
radiation from the visible part of the spectrum, including the infrared and ultraviolet part
of the spectrum. This technology enables the retrieval of information that the human eye
cannot see and its application is diverse (medicine, forestry, quality control of food and
drugs, forensics, etc.). One of the applications on which this paper is based is the detection
of watermarks.
It is multispectral recording that enables precise detection and display of watermarks,
which provides historians and other researchers with important information about the
historical background of the time in which the watermark was created.
This work represents a good basis for further research on watermarks, but it is important
to be careful in planning all research steps in order to ensure the reliability and quality of
the results. First of all, it is necessary to choose the appropriate book for research, as well
as the sample papers used in it. Also, it should be checked whether the selected filters of
the multispectral system are optimal for obtaining the best results. It is recommended to
test other filters and compare their effectiveness and when all necessary photos are
collected, they need to be processed in computer programs. It is important to ensure that
a consistent processing method is used to ensure quality contrast and clarity.
Finally, after obtaining the digitized form of the watermarks, it is necessary to carry out
further analyzes in order to assess the quality of their reconstruction. This includes
measuring their size and depth, determining the accuracy of their position in relation to
the text.

• Keywords: multispektralno snimanje; digitalizacija kulturne baštine; vodeni znakovi; filteri; rekonstrukcija
• Keywords (english): multispectral recording; digitization of cultural heritage; watermarks; filters; reconstruction
• Language: croatian
• URN:NBN: urn:nbn:hr:216:763272
• Study programme: Title: Graphic technology; specializations in: Graphic technology, Design of graphic products; Course: Graphic technology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-10-03 09:45:49