scholarly journals The Issue of Documentation of Hardly Accessible Historical Monuments by Using of Photogrammetry and Laser Scanner Techniques

2011 ◽  
Vol 6 ◽  
pp. 40-47 ◽  
Author(s):  
Karol Bartoš ◽  
Katarína Pukanská ◽  
Juraj Gajdošík ◽  
Miroslav Krajňák
Keyword(s):  
Laser Scanner ◽  
Digital Camera ◽  
Positional Accuracy ◽  
Historical Monuments ◽  
Close Range ◽  
Digital Formats ◽  
Images Processing ◽  
The Right ◽  
Digital Images Processing ◽  
Made In

This article deals with issues of measuring hardly accessible historical monuments on the example of the Slanec castle, Slovakia. In the first phase the convergence case of close-range photogrammetry was applied using digital camera Pentax K10D. Subsequently was created its 3D model in the PhotoModeler Scanner software. Special attention was paid to shape of ground, surroundings and characteristic of object of interest about choice of the right method and technique of making digital images. Processing of images was made with the highest possible accuracy with respect to the used method and apparatus. As a result of processing, the exact spatial model was made, which was exported to different formats. Also digital photo-plan with real photo textures and vector drawings was made. In the next phase the whole object of castle was measured with the laser scanner Leica ScanStation C10 and the final point cloud was processed in the best available software. The results obtained by both methods were compared in comparable digital formats with respect to the positional accuracy of final models. In the final phase is planned to obtain images appropriate for convergence case of photogrammetry using digital camera placed on a carrier on the MikroKopter HexaKopter controlled from the ground. Then the final comparison and further analysis of all acquired models can be made.

Calibration of a Photogrammetric System for Semiautomatic Measurement: CaM-DisT®

2007 ◽  
Vol 364-366 ◽  
pp. 259-264
Author(s):  
Pedro Arias ◽  
Henrique Lorenzo ◽  
Celestino Ordóñez ◽  
Julia Armesto
Keyword(s):  
Complete System ◽  
Digital Camera ◽  
Building Construction ◽  
Industrial Accidents ◽  
Work Time ◽  
Close Range Photogrammetry ◽  
Mathematical Background ◽  
Constructive Process ◽  
Close Range ◽  
Made In

Nowadays some measurement tasks are usually made by the joint use of different systems, techniques, even sciences, trying to find the best results together with less work time. This is the case of close range photogrammetry and laser distancemeter. It is possible to find some works where they are applied together in so different sceneries as architectonic conservation, civil engineering, building, etc. One of the scopes where these techniques can be applied is in the measurement of facades of buildings in construction [1,2]. During the constructive process it is necessary to make periodic measurements, and also during the whole life of the building, as a control tool [3]. At the present day some of these measurements are hand-made, with the risk of having an industrial accidents in some situations. In this work we present a methodology based on a photogrammetric - distancemeter joining measure system, in order to semi-automate some measurement procedures in building construction. The system consists of a semi-rigid calibrated support putting up a laser distancemeter and a digital camera, called CaM-DisT®. The support was specifically designed for this kind of application. The development of the system was made in four steps: establishment of the mathematical background; design of the support; construction of the support; and calibration of the complete system. The calibration process was made by two different alternatives which are xpounded this contribution in detail.

scholarly journals Structure from motion (SfM) photogrammetry as alternative to laser scanning for 3D modelling of historical monuments

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Omar Al Khalil
Keyword(s):  
Structure From Motion ◽  
Laser Scanning ◽  
Low Cost ◽  
Laser Scanner ◽  
Digital Camera ◽  
Point Clouds ◽  
3D Modelling ◽  
3D Point Clouds ◽  
Historical Monuments ◽  
Culture Heritage

During the past few years, new developments have occurred in the field of 3D photogrammetric modeling of culture heritage. One of these developments is the expansion of 3D photogrammetric modeling open-source software, such as VisualSfM, and cost-effective licensed software, such as Agisoft Metashape into the practical and affordable world. This type of SfM (Structure from Motion) software offers the world of 3D modelling of culture heritage a powerful tool for documentation and visualization. On the other hand, low-cost cameras are now available on the market. These cameras are characterized by high resolution and good quality lens, which makes them suitable for photogrammetric modelling. This paper reports on the results of the application of a SfM photogrammetry system in the 3D modelling of Safita Tower, a medieval structure in Safita, north-western Syria. The applied photogrammetric system consists of the Nikon Coolpix P100 10 MP digital camera and the commercial software Agisoft Metashape. The resulted 3D point clouds were compared with an available dense point cloud acquired by a laser scanner. This comparison proved that the low-cost SfM photogrammetry is an accurate methodology to 3D modeling historical monuments. 

scholarly journals Close range photogrammetric methods applied to the study of the fronts of Johnsons and Hurd Glaciers (Livingston Island, Antarctica) from 1957 to 2013

2016 ◽  
Author(s):  
Ricardo Rodríguez ◽  
Julián Aguirre ◽  
Andrés Díez ◽  
Marina Álvarez ◽  
Pedro Rodríguez
Keyword(s):  
Measurement Techniques ◽  
Laser Scanner ◽  
Digital Camera ◽  
Direct Methods ◽  
Satellite System ◽  
Data Repository ◽  
Global Coordinate System ◽  
Glacier Front ◽  
Close Range ◽  
Global Navigation Satellite

Abstract. The study of glacier fronts combines different geomatics measurement techniques as the classic survey using total station or theodolite, technical GNSS (Global Navigation Satellite System), using laser-scanner or using photogrammetry (air or ground). The measure by direct methods (classical surveying and GNSS) is useful and fast when accessibility to the glaciers fronts is easy, while it is practically impossible to realize, in the case of glacier fronts that end up in the sea (tide water glaciers). In this paper, a methodology that combines photogrammetric methods and other techniques for lifting the front of the glacier Johnsons, inaccessible is studied. The images obtained from the front, come from a non-metric digital camera; its georeferencing to a global coordinate system is performed by measuring points GNSS support in accessible areas of the glacier front side and applying methods of direct intersection in inaccessible points of the front, taking measurements with theodolite. The result of observations obtained were applied to study the temporal evolution (1957–2014) of the position of the Johnsons glacier front and the position of the Argentina, Las Palmas and Sally Rocks lobes front (Hurd glacier). Link to the data repository: doi:10.1594/PANGAEA.845379

scholarly journals Topical Therapy of Skin Scabs in Psoriasis with Salicylic Acid: Case Report

2021 ◽  
pp. 1-3
Author(s):  
Wilfredo Molina Wills ◽  
◽  
Vanessa Rodriguez ◽  
Keyword(s):  
Salicylic Acid ◽  
Topical Therapy ◽  
Digital Camera ◽  
Affected Area ◽  
Study Results ◽  
Left And Right ◽  
The Right ◽  
Visible Area ◽  
Inflammatory Action ◽  
Made In

The objective was to evaluate the keratolytic and anti-inflammatory action of salicylic acid in the affected area in the case reported. Methods. Clinical photography a digital camera was used Olympus SP570UZ with master software 2.0. The images obtained both in the initial phase without treatment and at the 72 hours of treatment were transferred and stored on a 4-core Sansung computer. The auto-dial adjustment option was selected. In this way, the camera selects the optimal way to take the photo shot. Analysis of the affected skin with scabs. Image J software was used to measure the area selected for the study in both cases. This measurement was made in pixels for the photographic region under study. Results. The image j software program measures the areas in pixels, to decrease in measurement error there was no calibration. That is, the measurement of the areas in pixels was maintained. The percentage ratios of the affected or non-affected areas for both left and right legs are presented in Tables. It is possible to observe the reduction of the affected area. The doubtful areas represent for the left leg 5.21% and for the right leg 30.08% after treatment. Only a clearly visible area with crusts and scabs of 1.60% was observed after treatment.

Cancellation and Termination of Assignment Contract of Patrimonial Rights of the Author

2019 ◽  
Vol 25 (2) ◽  
pp. 197-201
Author(s):  
Tudor-Vlad Sfârlog
Keyword(s):  
Scientific Research ◽  
Legal Provisions ◽  
The Right ◽  
Made In

Abstract The present study offers the doctrine of the right of intellectual creation new perspectives on the study of the institution of termination of the assignment contract for the patrimonial rights resulting from the intellectual creation. We believe that the present study is rich in doctrinal contributions, formulating new theses and opening the prospect for new perspectives of scientific research. Last but not least, we appreciate that the proposals made in the present study contribute not only to the activity of opinionated in the field, but also to the work of practitioners and direct beneficiaries of the legal provisions on the assignment of patrimonial rights of authors.

The Development of Horticulture Software on Landscape Plants

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 552a-552
Author(s):  
Gary J. Kling
Keyword(s):  
College Students ◽  
Product Development ◽  
World Wide ◽  
Technological Changes ◽  
Cd Rom ◽  
Landscape Plants ◽  
The World ◽  
Digital Formats ◽  
Current Stage ◽  
Made In

This presentation will cover some of the major decisions that were made in the development and modification of software to provide horticultural resources for college students and members of the industry. Technological changes have moved the production from video-disc technology to server-based digital formats, CD-ROM, and the World Wide Web. Each of these changes results in a different product suited to different audiences. The current stage of product development will be presented.

The Multiple-Vortex Structure of the El Reno, Oklahoma, Tornado on 31 May 2013

2018 ◽  
Vol 146 (8) ◽  
pp. 2483-2502 ◽  
Author(s):  
Howard B. Bluestein ◽  
Kyle J. Thiem ◽  
Jeffrey C. Snyder ◽  
Jana B. Houser
Keyword(s):  
Doppler Radar ◽  
Radar Data ◽  
Rapid Scan ◽  
X Band ◽  
Close Range ◽  
Formation And Evolution ◽  
Using Data ◽  
Secondary Vortices ◽  
The Right ◽  
Gust Front

Abstract This study documents the formation and evolution of secondary vortices associated within a large, violent tornado in Oklahoma based on data from a close-range, mobile, polarimetric, rapid-scan, X-band Doppler radar. Secondary vortices were tracked relative to the parent circulation using data collected every 2 s. It was found that most long-lived vortices (those that could be tracked for ≥15 s) formed within the radius of maximum wind (RMW), mainly in the left-rear quadrant (with respect to parent tornado motion), passing around the center of the parent tornado and dissipating closer to the center in the right-forward and left-forward quadrants. Some secondary vortices persisted for at least 1 min. When a Burgers–Rott vortex is fit to the Doppler radar data, and the vortex is assumed to be axisymmetric, the secondary vortices propagated slowly against the mean azimuthal flow; if the vortex is not assumed to be axisymmetric as a result of a strong rear-flank gust front on one side of it, then the secondary vortices moved along approximately with the wind.

scholarly journals The Effect of Perioral Scan and Artificial Skin Markers on the Accuracy of Virtual Dentofacial Integration: Stereophotogrammetry Versus Smartphone Three-Dimensional Face-Scanning

2020 ◽  
Vol 18 (1) ◽  
pp. 229
Author(s):  
Hang-Nga Mai ◽  
Du-Hyeong Lee
Keyword(s):  
Three Dimensional ◽  
Laser Scanner ◽  
Statistical Analyses ◽  
Integrated Models ◽  
Image Integration ◽  
Positional Accuracy ◽  
Significant Difference ◽  
Face Scanning ◽  
Scanning Systems ◽  
Dimensional Face

This study evaluated the effects of different matching methods on the accuracy of dentofacial integration in stereophotogrammetry and smartphone face-scanning systems. The integration was done (N = 30) with different matching areas (n = 10), including teeth image only (TO), perioral area without markers (PN) and with markers (PM). The positional accuracy of the integrated models was assessed by measuring the midline linear deviations and incisal line canting between the experimental groups and laser scanner-based reference standards. Kruskal–Wallis and Mann–Whitney U tests were used for statistical analyses (α = 0.05). The PM method exhibited the smallest linear deviations in both systems; while the highest deviations were found in the TO in stereophotogrammetry; and in PN in smartphone. For the incisal line canting; the canting degree was the lowest in the PM method; followed by that in the TO and the PN in both systems. Although stereophotogrammetry generally exhibited higher accuracy than the smartphone; the two systems demonstrated no significant difference when the perioral areas were used for matching. The use of perioral scans with markers enables accurate dentofacial image integration; however; cautions should be given on the accuracy of the perioral image obtained without the use of markers.

The "Right to Die": A Case Study in American Lawmaking*

1996 ◽  
Vol 3 (1) ◽  
pp. 49-74
Author(s):  
Alan Meisel
Keyword(s):  
Legal System ◽  
Right To Die ◽  
Judicial Process ◽  
Clinical Issue ◽  
The Press ◽  
American Law ◽  
American Legal System ◽  
The Right ◽  
Made In

AbstractIn the 20 years that have passed since the Karen Quinlan case exposed a simmering clinical issue to the light of day — more precisely, to the press and to judicial process — a consensus has developed in American law about how end-of-life decisionmaking should occur. To be sure, there are dissenting voices from this consensus, but they are often (though not always) about minor issues. By illustrating how this consensus has evolved, this paper explores how law is made in the American legal system and the roles that different legal and extra-legal institutions play in lawmaking.

Summary judgment — Quo vadis?

2021 ◽  
Vol 138 (1) ◽  
pp. 88-114
Author(s):  
Thino Bekker
Keyword(s):  
South African ◽  
Historical Development ◽  
Access To Justice ◽  
High Court ◽  
The Core ◽  
Golden Opportunity ◽  
Quo Vadis ◽  
The Right ◽  
Summary Judgment ◽  
Made In

The summary judgment procedure in South African law provides for a speedy judgment in favour of a deserving plaintiff where it can be shown that the defendant does not have a triable defence. In 2019 the Rules Board made certain drastic amendments to the procedure of summary judgment in the high court. In this article the historical development of the procedure of summary judgment will be discussed, and the new amendments to rule 32 of the Uniform Rules of Court critically evaluated. It will be argued that the amendments to rule 32 were unnecessary and that it may diminish the right to access to justice in civil disputes. It will, however, also be argued that there are some merits in the critique raised by the Rules Board in relation to rule 32 and that the Rules Board missed a golden opportunity to overhaul the entire summary judgment procedure in a more sensible manner and in line with the core constitutional values of s 34 of the Constitution. It will be argued that rule 32 should be replaced in its entirety by a new, more streamlined procedure, and some recommendations for legal reform will be made in this regard.

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