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Comparison of photogrammetry and laser scanning methods on the chosen architectural object

Łukaszewski Łukasz

Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture

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2019

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z. 66, nr 2

5--12

EN

Digitization of documentation of white cards is currently a key aspect of preservation of national heritage. Destructive processes of archival documentation, escalation of acts of vandalism, consequences of war operations that have left their stamp on architectural objects as well as monuments of nature contributed to adaptation and introduction of the fifth form of national heritage, which is “digitization”. Digitization shall ensure the re-creation of not only lost national treasures in the future, but also shall enable researchers in architecture, archeologists, historians, conservators a research and an analysis of chosen objects and records related to it in a non-invasive and interactive way. Objects subject to digitization will be able to be analyzed more thoroughly since digital data rendered available by electronic means shall enable and facilitate an interdisciplinary research process. In the article, the author presents results that compare two methods for digitization of the chosen architectural object. Documentation consists in recording and preserving of the fragment of façade and the chosen architectural detail of the considered object. The object subject to analysis is the "Tenement under the singing frog" built in 1889-90 acc. to the project by Teodor Marian Talowski, in Kraków at Retoryki 1 St. For an analyzed example, research has consisted in application of photogrammetry and laser scanning methods to acquire information on spatial geometry of researched object and compare discrepancies of newly generated 3D models. The object presented has undergone a comparative analysis, based on which the key aspects have been isolated and then demonstrated in a graphic way, as well as specific issues related to them, such as precision and effect of distortion have been discussed. The objective of the work has been presentation of possibilities of practical application of photogrammetry as a cheaper method of digitization of architectural objects in relation to scanning method, applicable in digitization and preservation of national heritage consisting in development of new interactive documentation (white card).

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Mitigating the Risk of Documentary Discrepancy in Process of Estonian Export Letters of Credit Transaction

Alavi H., Kerikmäe T.

Multidisciplinary Aspects of Production Engineering

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2018

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Vol. 1, Iss. 1

425--432

EN

The main subject of this paper is to study relations between metrics which affects payment risk under documentary letters of credit (DLC) from the exporters perspective in Estonia. This will result in reducing the risk of documentary discrepancy in presentation of documents to banks, decrease relevant costs to rectification of discrepancies which are nothing but a loss to exporter and improving the flow of international trade. For this purpose, the author takes an empirical approach in his strive to find answer to following questions: What are different types of discrepancy in Estonian export landscape? How relevant are deferent attributes of the DLC to attributes types of discrepancy? What measures should be in place to prevent risk of documentary discrepancy in DLC operation? (In Estonian export trade).

3

Dokładne wyznaczanie rozbieżności

Karnasiewicz P.

Studia Informatica

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2008

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Vol. 29, nr 4A

31-42

PL

Rozbieżność jest pewną miarą jakości rozkładów próbek wyrażoną jako supremum. Przybliżone wyznaczanie tego supremum polega generalnie na porównywaniu objętości dużej liczby losowo wybranych zbiorów ze z góry obranej rodziny do liczby próbek, które w tych zbiorach się zawierają. W niniejszej pracy została wyprowadzona i przedstawiona numeryczna metoda dokładnego wyznaczania rozbieżności z użyciem najpopularniejszych rodzin zbiorów.

EN

Discrepancy is a measure of quality of samples distribution expressed as a supremum. In general, estimating this supremum relies on comparing volumes of many randomly chosen sets from some given family to quantity of samples belonging to these sets. In this paper, a numerical method of precise determinating discrepancy using the most popular families of sets will be introduced.

4

On the Euler function on differences between the coordinates of points on modular hyperbolas

Shparlinski I. E.

Bulletin of the Polish Academy of Sciences. Mathematics

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2008

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Vol. 56, no 1

1-7

EN

For a prime p > 2, an integer a with gcd(a,p) = 1 and real 1 ≤ X,Y < p, we consider the set of points on the modular hyperbola Ηa,p(X,Y) = {(x,y) : x,y ≡ a (mod p), 1 ≤ x ≤ X, 1 ≤ y ≤ Y}. We give asymptotic formulas for the average values (x,y)∈ ... [wzór] with the Euler function φ(k) on the difference between the components of points of Ηa,p(X,Y).