GIS three-dimensional Modelling with geo-informatics techniques

2017 ◽  
Author(s):  
Katarzyna Bobkowska ◽  
Jakub Szulwic ◽  
Paweł Tysiac ◽  
Patryk Ziółkowski
Keyword(s):  
Data Model ◽  
Point Cloud ◽  
Satellite Images ◽  
Three Dimensional ◽  
Great Promise ◽  
Gis Model ◽  
High Resolution Satellite Images ◽  
Potential Applications ◽  
The Subject ◽  
Three Dimensional Models

The integration issue of virtual models and geo-referenced database have a very broad spectrum of potential applications. Before the integration issue was on the cusp, it was quite problematic to combine three-dimensional models with the geo-referenced database. An integrated database contains a variety of data including such as object orientated data model and raster data. Within this paper, authors present an integration process aiming to make real virtual GIS database which includes the creation of structures, such as bridges, buildings, roads and terrain formations. To create a three-dimensional GIS model high-resolution satellite images/point cloud has been used. For 3D modelling and reconstruction purposes, The Blender program has been used since the software provides with quick workflow and userfriendly interface. As a result of this study authors concede that integrated techniques for three-dimensional GIS databases allow conducting easy as well as sophisticated operation in an efficient and non-time consuming way. The subject holds great promise for a future, current challenges focusing on new approaches for conjectures of spatial objects that will be used to boost the capabilities for automatic visualization.

Handheld Laser Scanner Research

2019 ◽  
Vol 952 (10) ◽  
pp. 47-54
Author(s):  
A.V. Komissarov ◽  
A.V. Remizov ◽  
M.M. Shlyakhova ◽  
K.K. Yambaev
Keyword(s):  
Point Cloud ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Test Site ◽  
Optical Systems ◽  
Advantages And Disadvantages ◽  
Site Survey ◽  
Laser Scanners ◽  
Three Dimensional Models ◽  
The Stability

The authors consider hand-held laser scanners, as a new photogrammetric tool for obtaining three-dimensional models of objects. The principle of their work and the newest optical systems based on various sensors measuring the depth of space are described in detail. The method of simultaneous navigation and mapping (SLAM) used for combining single scans into point cloud is outlined. The formulated tasks and methods for performing studies of the DotProduct (USA) hand-held laser scanner DPI?8X based on a test site survey are presented. The accuracy requirements for determining the coordinates of polygon points are given. The essence of the performed experimental research of the DPI?8X scanner is described, including scanning of a test object at various scanner distances, shooting a test polygon from various scanner positions and building point cloud, repeatedly shooting the same area of the polygon to check the stability of the scanner. The data on the assessment of accuracy and analysis of research results are given. Fields of applying hand-held laser scanners, their advantages and disadvantages are identified.

THE USING OF TERRESTRIAL LASER (POINT CLOUD) SCANNING TECHNOLOGIES ON URBAN SCALE: EXAMPLE OF THE HISTORICAL URBAN TEXTURE OF LAPSEKİ

2021 ◽  
Vol 0 (23) ◽  
pp. 0-0
Author(s):  
Hatice Çiğdem ZAĞRA ◽  
Sibel ÖZDEN
Keyword(s):  
Point Cloud ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Terrestrial Laser Scanning ◽  
Traditional Methods ◽  
Life Project ◽  
Three Dimensional Models ◽  
Architectural Restoration ◽  
Cloud Technologies ◽  
Orthophoto Images

Aim: This study aims to comparatively evaluate the use potential of orthophoto images obtained by terrestrial laser scanning technologies on an urban scale through the "Old Lapseki Finds Life Project" prepared using terrestrial laser scanning technologies and the "Enez Historical City Square Project" prepared using traditional methods. Method: In the study, street improvement projects of 29.210 m2 Lapseki and 29.214 m2 Enez city designed on an urban scale were evaluated and compared with descriptive statistics based on different parameters. Results: In the study, it has been determined that terrestrial laser (point cloud) technologies are 99,9% accurate when compared to traditional methods, save time by 83,08% and reduce workforce by 80%. In addition, it has been determined that terrestrial laser scanning technologies accelerate project processes compared to traditional methods. Conclusion: In this study, the use of laser scanning technologies, which are basically reverse engineering applications, in architectural restoration projects, determination of the current situation and damage, architectural documentation of structures and preparation of three-dimensional models, in terms of efficiency in survey studies are evaluated. It has been observed that orthophoto images obtained by terrestrial laser scanning technologies in architectural relief-restoration-restitution projects have potentials' worth using in different stages of the project.

scholarly journals Accuracy Analysis Of Three Dimensional Models Of Building Prof. H. Soedarto S. H. Using The Terrestrial Laser Scanner Technology Based On Traverse Method

Teknik ◽  
2019 ◽  
Vol 39 (2) ◽  
pp. 94
Author(s):  
Yudo Prasetyo
Keyword(s):  
Point Cloud ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Terrestrial Laser Scanner ◽  
Accuracy Analysis ◽  
Dimensional Models ◽  
Data Point ◽  
Three Dimensional Models

Teknologi dokumentasi gedung secara spasial untuk konservasi dan perencanaan tata ruang semakin berkembang pesat. Urgensi tingkat ketelitian dalam suatu pengukuran juga dituntut semakin tinggi. Salah satu teknologi pembentukan objek tiga dimensi yang berkembang saat ini adalah Terrestrial Laser Scanner (TLS). Metode pengukuran TLS terdiri atas 4 metode yaitu: Cloud to Cloud, Target to Target, Traverse, dan metode kombinasi. Penelitian ini bertujuan untuk menganalisa tingkat ketelitian metode Traverse dalam pengukuran suatu objek model tiga dimensi untuk keperluan dokumentasi gedung menggunakan TLS.Ketelitian metode Traverse akan diujikan pada Gedung Prof. H. Soedarto, S. H. Tingkat ketelitiannya diujikan pada dua parameter yakni hasil metode registrasi dan hasil visualisasi model tiga dimensi. Hasil analisis pengolahan data point cloud menunjukkan bahwa alat TLS dengan metode Traverse dapat digunakan untuk menghasilkan model tiga dimensi Gedung Prof. Sudarto, S. H. Nilai rata-rata validasi yang diperoleh adalah sebesar 0,004 meter dengan besaran ketelitian model RMSE sebesar ±0,00611 meter. 

ABILITY OF CHILDREN TO DRAW AND SPATIALLY MODEL “A TREE”

2019 ◽  
Vol 2 ◽  
pp. 555
Author(s):  
Ewa Piwowarska
Keyword(s):  
Flat Surface ◽  
Three Dimensional ◽  
Spatial Modelling ◽  
Soft Material ◽  
Preschool Age ◽  
Artistic Activity ◽  
The Subject ◽  
Dimensional Models ◽  
Characteristic Features ◽  
Three Dimensional Models

Many well-known educationalists and psychologists noticed that children included “a tree” in their drawings very early, which usually occurred next to a figure or a building. The drawing of the tree, which was treated as a substitute of graphical picture of a figure, constituted material for the research they conducted. Artistic activity is also one of the determinants of diagnosing child’s development and one of many opportunities to say about particular topics, which are preferred by the child. Another precious activity is -next to the drawing-spatial modelling of soft material. The research conducted with the use of the technique of analysis of the artistic works aimed at defining the course of development of “a tree” drawn and spatially modelled by children at preschool age. It was important for the conducted studies to distinguish models of “a tree” – created in two art techniques – typical of particular age along with their characteristic features (clarity of the message, colouring, details used). The subject of the study concerned artworks on flat surface and three dimensional models of a tree formed by children aged 3 to 6 years. Distinguished characteristic features of the drawn and spatially modelled “tree” may become helpful for teachers in assessing development of children. 

scholarly journals How to circumvent the limitations of open source software and orthorectify how (or better) than with commercial software

2020 ◽  
Author(s):  
Valerio Baiocchi ◽  
Roberta Onori ◽  
Felicia Monti ◽  
Francesca Giannone
Keyword(s):  
Open Source ◽  
Satellite Images ◽  
Research Work ◽  
Three Dimensional ◽  
Commercial Software ◽  
Whole Process ◽  
High Resolution Satellite Images ◽  
Open Source Gis ◽  
Gis Software ◽  
Better Than

<p>High and very high resolution satellite images are now an irreplaceable resource for earth observation in general and for the extraction of hydrogeological information in particular. In order to use them correctly and compare them with previous surveys and maps, they must be treated geometrically to remove the distortions introduced by the acquisition process. Orthorectification is not a simple georeferencing because the process must take into account the three-dimensional acquisition geometry of the sensor. For this reason orthorectification must be performed within specific commercial software with additional costs compared to image acquisition which, in some cases, is currently free of charge.<br>Some orthorectification algorithms, mainly based on the RPC approach, are available in open source GIS software such as QGIS. OTB (Orpheus toolbox) for QGIS contains some of these algorithms but its interfaces are not clear and there are some incomprehensible limitations such as the impossibility to input three-dimensional ground control points (GCPs). This severely limits the final achievable accuracy because it does not allow to correctly estimate the influence of different ground morphologies on the acquisition geometry. To get around these limitations you can make a "pseudo DEM" and other expedients to complete the whole process obtaining absolute results comparable if not better than those of commercial software.<br>The proposed procedure may not be the fastest but it can be a valid alternative for those who use satellite images as a tool in their research work.</p><p> </p>

scholarly journals MAXIMIZING THE VALUE OF PHOTOGRAMMETRIC SURVEYS IN THE CONSERVATION OF WALL PAINTINGS

2021 ◽  
Vol XLVI-M-1-2021 ◽  
pp. 851-857
Author(s):  
L. Wong ◽  
W. Rose ◽  
A. Dhanda ◽  
A. Flavin ◽  
L. Barazzetti ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Large Scale ◽  
Three Dimensional ◽  
Wall Painting ◽  
Wall Paintings ◽  
Fine Surface ◽  
The Subject ◽  
Three Dimensional Models ◽  
Documentation Tool ◽  
Irregular Topography

Abstract. In the field of wall painting conservation, photogrammetric surveys are an increasingly common documentation tool. The outputs from these surveys, including captured images, orthophotos, and three-dimensional models, are used by conservators to monitor and record condition phenomena and conservation treatments. To serve these conservation needs, the outputs should have visual fidelity, meaning they are a close representation of the subject based on their spatial resolution, overall focus, even lighting and color accuracy. However, wall paintings present unique technical challenges for photogrammetry considering their often large scale, irregular topography, range of surface attributes, and access issues. As a documentation technique more commonly applied to capture the geometry of buildings and objects, using photogrammetry to record both the topography and fine surface details of a wall painting requires thorough planning. This paper examines specific challenges in documenting wall paintings and how collaboration between conservators and heritage-recording specialists has improved practice and maximized the value of photogrammetric surveys for conservation.

MODERN DESTRUCTIVE RIVERBED PROCESSES OF THE RIVER ONON IN THE TRANSBAIKAL REGION

2020 ◽  
Vol 26 (9) ◽  
pp. 6-12
Author(s):  
G. Veselkov ◽  
Keyword(s):  
Satellite Images ◽  
Practical Significance ◽  
Land Resources ◽  
Amur Basin ◽  
Channel Deformations ◽  
Natural Factors ◽  
High Resolution Satellite Images ◽  
The Subject ◽  
Industrial Use ◽  
Natural Channel

The specificity of the territory of the upper Amur basin is shown, which consists in a significant variety and complexity of natural complexes. The object of the study was the Onon river, the subject-riverbed processes that occur in the territory under the influence of natural factors. The purpose of the study is to identify, analyze and evaluate the scale of development of riverbed processes in the upper Amur basin. The tasks were to identify active areas of water erosion. Onon, spatial analysis of the received information, identification of the dynamics and intensity of riverbed processes in active areas during the destructive leash of 2018 and beyond. The relevance of the work has been determined by the need to quickly identify and prevent the development of riverbed processes for erosion control and rational use of land resources for further industrial use. The research methods used are analysis and interpretation of high-resolution satellite images and other multi-time cartographic materials, processing and digitization of images. The main natural channel-forming factors of the Onon river that determine the current dynamics of channel deformations are identified and analyzed. The theoretical and practical significance of the study is to determine the degree of influence on riverbed processes of various riverbed-forming natural factors. The necessity of carrying out measures on the territory of the upper Amur basin to solve water management problems is justified

scholarly journals Sinusoidal: An Exploration of Mathematics and Movement

2019 ◽  
Vol 21 (1) ◽  
Author(s):  
Caroline Grace Lockwood
Keyword(s):  
Three Dimensional ◽  
Sine Wave ◽  
Two Dimensional ◽  
Musical Score ◽  
Work Of Art ◽  
Dance Movement ◽  
Single Tone ◽  
The Subject ◽  
Three Dimensional Models ◽  
Aesthetic Understanding

Mathematic theory often takes place in two-dimensional forms. Whether hand-drawn graphs, or three-dimensional models on a screen, the presentation of the subject often lacks the length, breadth, and depth it deserves. Through four phases of research, I explored how one can model mathematic concepts through movement and music, both demonstrably and abstractly. I began my research by basing small dance/movement phrases in simple trigonometric concepts and giving my dancers tasks exploring related subjects. I then examined how other choreographers, both past and present, employed mathematic approaches in their work. To accompany my choreographic work and complete my project, I created a musical score using only single-tone sine wave frequencies. Finally, I interviewed my dancers, as well as other dancers and engineers, to understand how the piece was perceived as both a work of art and an informative display. Through my research, I hope to further the embodied and aesthetic understanding of applied simple and complex mathematic concepts.

scholarly journals Amphitheater of Volterra: Case Study for the Representation of Excavation Data

2017 ◽  
Vol 1 (2) ◽  
pp. 269-281
Author(s):  
Carlo Battini ◽  
Elena Sorge
Keyword(s):  
Structure From Motion ◽  
Mobile Application ◽  
Three Dimensional ◽  
Laser Scanner ◽  
3D Models ◽  
Post Processing ◽  
The Subject ◽  
Three Dimensional Models ◽  
Digital Projection

The work presented wants to show how different techniques of expeditious relief can be combined together in order to better describe the subject studied. Techniques of digital projection as laser scanner, topography and Structure from Motion can be used simultaneously and interact with each other to create a rich database of colorimetric and metrics information. Methodologies that, at the same time, present the peculiarities and errors of peculiar relief of the technology employed.The case study examined in this type of research is the discovery of the amphitheater of Volterra. Discovered in July 2015 during the phases of reclamation of a stream, is located close to Porta Diana and a few hundred meters from the Roman Theater discovered in the last century. An excavation campaign undertaken Between October and November 2015 has allowed us to bring to light the crests of the supporting walls of the structure, revealing the presence of the three orders and a depth of about ten meters.The step of post processing has finally seen the use of three-dimensional models acquired both for the creation of images metrics necessary to the study of the stratigraphic units, both for studying a mobile application, 3D models and data of the excavation, easy to use for transmitting the information collected.  

scholarly journals 3D model retrieval using MeshSIFT descriptor and fuzzy C-means clustering

2020 ◽  
Vol 19 (3) ◽  
pp. 1452
Author(s):  
Najlaa Abd Hamza ◽  
Shatha Habeeb Jafer ◽  
Raghad Mohammed Hadi
Keyword(s):  
Three Dimensional ◽  
3D Models ◽  
Superior Performance ◽  
Huge Number ◽  
Fuzzy C Means ◽  
Model Retrieval ◽  
Fuzzy C Means Clustering ◽  
The Subject ◽  
Dimensional Models ◽  
Three Dimensional Models

A huge number of three-dimensional models exists on the internet, due to the fact that there are now more three-dimensional modelling and digitizing tools available for ever-increasing applications. The procedures for retrieval of three-dimensional models have thus become even more essential. The subject of this paper is a shape retrieval of 3D models that are signified as triangle meshes. We propose a new method which first computes the descriptor of 3D models through extracting its features, and then divides a model into clusters depending on a descriptor which is invariant to scale and orientation. A Fuzzy C-means clustering method is utilized for dividing the model into clusters. The superior performance and benefits of our method are shown in the results.

Sign in / Sign up

Export Citation Format

Share Document