Relevant bibliographies by topics / Terrain laser scanner

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  2. Dissertations / Theses
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Academic literature on the topic 'Terrain laser scanner'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Terrain laser scanner"

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CAMPBELL, JACOB, MAARTEN UIJT DE HAAG, and FRANK VAN GRAAS. "Terrain-Referenced Positioning Using Airborne Laser Scanner." Navigation 52, no. 4 (December 2005): 189–97. http://dx.doi.org/10.1002/j.2161-4296.2005.tb00362.x.

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Yokoyama, H., and H. Chikatsu. "AUTOMATIC TREE DATA REMOVAL METHOD FOR TOPOGRAPHY MEASUREMENT RESULT USING TERRESTRIAL LASER SCANNER." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W3 (February 23, 2017): 659–64. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w3-659-2017.

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Recently, laser scanning has been receiving greater attention as a useful tool for real-time 3D data acquisition, and various applications such as city modelling, DTM generation and 3D modelling of cultural heritage sites have been proposed. And, former digital data processing were demanded in the past digital archive techniques for cultural heritage sites. However, robust filtering method for distinguishing on- and off-terrain points by terrestrial laser scanner still have many issues. In the past investigation, former digital data processing using air-bone laser scanner were reported. Though, efficient tree removal methods from terrain points for the cultural heritage are not considered. In this paper, authors describe a new robust filtering method for cultural heritage using terrestrial laser scanner with "the echo digital processing technology" as latest data processing techniques of terrestrial laser scanner.
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Gollob, Christoph, Tim Ritter, and Arne Nothdurft. "Comparison of 3D Point Clouds Obtained by Terrestrial Laser Scanning and Personal Laser Scanning on Forest Inventory Sample Plots." Data 5, no. 4 (October 31, 2020): 103. http://dx.doi.org/10.3390/data5040103.

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In forest inventory, trees are usually measured using handheld instruments; among the most relevant are calipers, inclinometers, ultrasonic devices, and laser range finders. Traditional forest inventory has been redesigned since modern laser scanner technology became available. Laser scanners generate massive data in the form of 3D point clouds. We have developed a novel methodology to provide estimates of the tree positions, stem diameters, and tree heights from these 3D point clouds. This dataset was made publicly accessible to test new software routines for the automatic measurement of forest trees using laser scanner data. Benchmark studies with performance tests of different algorithms are welcome. The dataset contains co-registered raw 3D point-cloud data collected on 20 forest inventory sample plots in Austria. The data were collected by two different laser scanning systems: (1) A mobile personal laser scanner (PLS) (ZEB Horizon, GeoSLAM Ltd., Nottingham, UK) and (2) a static terrestrial laser scanner (TLS) (Focus3D X330, Faro Technologies Inc., Lake Mary, FL, USA). The data also contain digital terrain models (DTMs), field measurements as reference data (ground-truth), and the output of recent software routines for the automatic tree detection and the automatic stem diameter measurement.
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Lau, C. L., S. Halim, M. Zulkepli, A. M. Azwan, W. L. Tang, and A. K. Chong. "TERRAIN EXTRACTION BY INTEGRATING TERRESTRIAL LASER SCANNER DATA AND SPECTRAL INFORMATION." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-2/W4 (October 19, 2015): 45–51. http://dx.doi.org/10.5194/isprsarchives-xl-2-w4-45-2015.

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The extraction of true terrain points from unstructured laser point cloud data is an important process in order to produce an accurate digital terrain model (DTM). However, most of these spatial filtering methods just utilizing the geometrical data to discriminate the terrain points from nonterrain points. The point cloud filtering method also can be improved by using the spectral information available with some scanners. Therefore, the objective of this study is to investigate the effectiveness of using the three-channel (red, green and blue) of the colour image captured from built-in digital camera which is available in some Terrestrial Laser Scanner (TLS) for terrain extraction. In this study, the data acquisition was conducted at a mini replica landscape in Universiti Teknologi Malaysia (UTM), Skudai campus using Leica ScanStation C10. The spectral information of the coloured point clouds from selected sample classes are extracted for spectral analysis. The coloured point clouds which within the corresponding preset spectral threshold are identified as that specific feature point from the dataset. This process of terrain extraction is done through using developed Matlab coding. Result demonstrates that a higher spectral resolution passive image is required in order to improve the output. This is because low quality of the colour images captured by the sensor contributes to the low separability in spectral reflectance. In conclusion, this study shows that, spectral information is capable to be used as a parameter for terrain extraction.
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Dalmolin, Quintino, John Alejandro Fierro Sanhueza, Edson Aparecido Mitishita, and Daniel Rodrigues Dos Santos. "Photogrammetric control points from airborne laser scanner." Revue Française de Photogrammétrie et de Télédétection, no. 198-199 (April 21, 2014): 39–45. http://dx.doi.org/10.52638/rfpt.2012.70.

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Cet article présente une méthodologie d’extraction semi-automatique de points d’appui pour la phototriangulation à partir d’images d’intensité laser. Les points d’appui sont déterminés par l’intersection de facettes planes reconstruites à partir des points d’un levé laser aéroporté. L’objectif est de vérifier la possibilité de substituer les points ainsi obtenus à des points qui seraient mesurés directement sur le terrain, par exemple au moyen d’un récepteur GPS. Les points laser sont traités de manière à permettre la reconstrtruction des facettes places correspondant aux toits des maisons, édifices et autres constructions, par une méthode semi-automatique. L’identification et l’extraction de cette facettes se sont appuyées sur une triangulation de Delaunay et sur l’analyse des vecteurs normaux des triangles qui la constituent. Pour tester cette méthode, on a réalisé une photo-triangulation avec une compensation par faisceaux basée sur les points issus du relevé laser, des points mesurész sur le terrain par GPS servant de points de contrôle. Un bloc photogrammétrique constitué de 6 images acquises par une caméra non métrique a été utilisé pour ces tests. L’analyse et la comparaison des résultats permettent de recommander cette méthode.
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TAKATO, Michihito. "Case study of terrain measurement using terrestrial laser scanner and Unmanned Aerial Vehicle mounted laser scanner." Journal of the Japan society of photogrammetry and remote sensing 57, no. 2 (2018): 70–73. http://dx.doi.org/10.4287/jsprs.57.70.

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Reddy, Satish Kumar, and Prabir K. Pal. "Segmentation of ordered point cloud using a novel measure of terrain unevenness." Sensor Review 37, no. 1 (January 16, 2017): 88–100. http://dx.doi.org/10.1108/sr-04-2016-0078.

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Purpose This paper aims to present object or feature segmentation from an ordered 3D point cloud range data obtained from a laser scanner for the purpose of robot navigation. Design/methodology/approach Rotating multi-beam laser scanners provide ordered 3D range data. Differences between consecutive ranges in radial direction are used to compute a novel measure of terrain unevenness at each data point. Computed over a complete rotation, an unevenness field is formed surrounding the scanner. A part of this field staying below a threshold is recognized as ground and removed. Remaining non-ground points are segmented into objects by region growing with points whose unevenness lies within pre-specified limiting values. Findings The proposed unevenness attribute is simple and efficient for segmenting distinct objects or features. The fineness of surface features can be regulated by adjusting the threshold value of difference in unevenness between neighbouring points that triggers an onset of new segments. Research limitations/implications The angles between neighbouring laser range data are assumed to be known. Practical implications Segmented objects or features can be used for scan registration, object tracking and robot navigation. Social implications The method may find use in autonomous robots and driverless cars. Originality/value Differences between consecutive range data are used imaginatively to derive a novel measure of terrain unevenness, which in turn, is used for efficient segmentation of objects and features.
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Hollaus, M., W. Wagner, and K. Kraus. "Airborne laser scanning and usefulness for hydrological models." Advances in Geosciences 5 (December 16, 2005): 57–63. http://dx.doi.org/10.5194/adgeo-5-57-2005.

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Abstract. Digital terrain models form the basis for distributed hydrologic models as well as for two-dimensional hydraulic river flood models. The technique used for generating high accuracy digital terrain models has shifted from stereoscopic aerial-photography to airborne laser scanning during the last years. Since the disastrous floods 2002 in Austria, large airborne laser-scanning flight campaigns have been carried out for several river basins. Additionally to the topographic information, laser scanner data offer also the possibility to estimate object heights (vegetation, buildings). Detailed land cover maps can be derived in conjunction with the complementary information provided by high-resolution colour-infrared orthophotos. As already shown in several studies, the potential of airborne laser scanning to provide data for hydrologic/hydraulic applications is high. These studies were mostly constraint to small test sites. To overcome this spatial limitation, the current paper summarises the experiences to process airborne laser scanner data for large mountainous regions, thereby demonstrating the applicability of this technique in real-world hydrological applications.
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Achmad, M. S. Hendriyawan, Mohd Razali Daud, Dwi Pebrianti, and Saifudin Razali. "Laser-Inertial Aided 3D Scanner Using Geometric Invariant for Terrain Construction." Applied Mechanics and Materials 799-800 (October 2015): 957–63. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.957.

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Researchers in robotic vision technology are facing larger challenges, where the 2D technology has flaws in complex robot navigation in 3D space. Using 3D scanner, the robot is able to get a more detailed terrain construction, making it easier to carry out its tasks. The 3D image is obtained by fusing the Hokuyo URG-04LX and the 6-DOF IMU that consists of acceleration sensor and gyro sensor. IMU sensor outputs are the angle, speed, and position in 3D. Nevertheless, just the value of the angle is used in this study to construct 3D images based on geometric invariant. To reduce the interference in the sensor output, two types of filter are applied; the Gaussian filter used on the output of 2D LRF, while the complementary filter is applied to the output of the IMU sensor. Angle measurement plays an important role in term of geometric invariant for terrain construction. The complementary filter has provided the best angle measurement results with the lowest error on time constant (τ) = 0.475s and sampling time (dt) = 10ms. Thus, the proposed systems have successfully made an obvious 3D image of the terrain in the indoor testing.
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Lauterbach, H. A., D. Borrmann, A. Nüchter, A. P. Rossi, V. Unnithan, P. Torrese, and R. Pozzobon. "MOBILE MAPPING OF THE LA CORONA LAVATUBE ON LANZAROTE." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences IV-2/W5 (May 29, 2019): 381–87. http://dx.doi.org/10.5194/isprs-annals-iv-2-w5-381-2019.

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<p><strong>Abstract.</strong> Planetary surfaces consist of rough terrain and cave-like environments. Future planetary exploration demands for accurate mapping. However, recent backpack mobile mapping systems are mostly tested in structured, indoor environments. This paper evaluates the use of a backpack mobile mapping system in a cave-like environment. The experiments demonstrate the abilities of an continuous-time optimization approach by mapping part of a lavatube of the La Corona volcano system on Lanzarote. We compare two strategies for trajectory estimation relying either on 2D or 3D laser scanners and show that a 3D laser scanner substantially improved the final results.</p>
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Dissertations / Theses on the topic "Terrain laser scanner"

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Campbell, Jacob L. "Application of Airborne Laser Scanner - aerial navigation." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1147294952.

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Vadlamani, Ananth Kalyan. "Airborne Laser Scanner Aided Inertial for Terrain Referenced Navigation in Unknown Environments." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1268410840.

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Wallace, Shane Alan. "DEVELOPMENT OF A SMALL AND INEXPENSIVE TERRAIN AVOIDANCE SYSTEM FOR AN UNMANNED AERIAL VEHICLE VIA POTENTIAL FUNCTION GUIDANCE ALGORITHM." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/380.

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Despite the first unmanned aerial vehicle (UAV) mission being flown on Aug 22 1849 to bomb Venice UAVs have only recently began to modernize into sophisticated tools beyond simple aerial vehicles. With an increasing number of potential applications, such as cargo delivery, communications, search and rescue, law enforcement, and homeland security, the need for appropriate UAV technology advancement also arose. Here, the development of a low-cost collision avoidance system is described. Hardware was tested and selected based on predetermined constraints and goals. Additionally, a variety of potential functions were explored and assessed at their effectiveness in preventing a collision of a UAV with mountainous terrain. Simulations were conducted using Cloud Cap’s Piccolo autopilot in conjunction with Matlab. Based on these simulations, a set of potential functions was selected to be used with the chosen hardware on subsequent UAV-development-related projects.
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Sta, Marouen. "Comparaison tractographie IRM - tissu cérébral et optimisation de la reconstruction tractographique par algorithme génétique." Thesis, Tours, 2017. http://www.theses.fr/2017TOUR3305/document.

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La validation des algorithmes de tractographie et l’optimisation des paramètres choisis en référence à une vérité terrain, sont primordiales avant l’utilisation de ces méthodes en routine clinique. D’une part, nous présentons une méthode de comparaison quantitative de reconstructions issues de la tractographie à celles reconstruites depuis la dissection par un scanner laser. Cette comparaison permet d’évaluer les reconstructions de différents modèles et algorithmes de tractographie (déterministe, probabiliste) en les confrontant à une vérité terrain acquise par le scanner laser (surfaces triangulées). La transformation des données sous des formats communs était nécessaire avant leur comparaison quantitative. Deux méthodes de comparaison, surface-surface et volume-volume ont été proposées. D’autre part, nous présentons une méthode d’optimisation par algorithme génétique (AG), des paramètres de tractographie déterministe. L’AG est un algorithme itératif d’optimisation basé sur la sélection naturelle, il est capable d’optimiser des problèmes complexes ayant plusieurs paramètres. Etant donné la vérité terrain d’un faisceau, l’AG se propose de trouver le jeu de paramètres optimal donnant le meilleur résultat de tractographie. Les méthodes de comparaisons et d’optimisation ont été appliquées à un faisceau d’objet test puis à deux faisceaux disséqués à partir d’un cerveau humain post mortem après acquisitions IRM et scanner laser
Tractography validation and optimization of tracking parameters against a ground truth are mandatory before a large clinical use. First, we present a method to quantitatively compare tractography reconstructions to a ground truth derived from laser scanner acquisitions of dissected specimens. This comparison allows evaluation of multiple models and tractography approaches (deterministic, probabilistic…). The ground truth used for this comparison was acquired from dissected specimens using a surface laser scanner, which produces triangulated surface meshes. Data transformation to a common format was necessary before quantitative comparisons. Two comparison methods were proposed, surface-to-surface and volume-to-volume. Second, we propose a method for automatic optimization of deterministic tractography parameters using a genetic algorithm (GA). The GA is an iterative optimization algorithm based on natural selection, which is able to optimize complex problems having several parameters. For a given ground truth fasciculus, the GA was expected to find the set of tractography parameters producing the best tractography result according to the ground truth. The comparison and optimization methods were applied to a synthetic bundle derived from a phantom and to two dissected white matter tracts of a human post mortem brain
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Kasperski, Johan. "Confrontation des données de terrain et de l'imagerie multi-sources pour la compréhension de la dynamique des mouvements de versants." Phd thesis, Université Claude Bernard - Lyon I, 2008. http://tel.archives-ouvertes.fr/tel-00380467.

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Face aux menaces des grands mouvements de versants rocheux, les techniques conventionnelles de suivi ne fournissent pas une vision globale, contrairement aux techniques d'imagerie. En considérant leurs apports à la description cinématique de trois sites instables, nous montrons que (1) la corrélation d'images aériennes est une solution rapide pour une connaissance globale et multi-temporelle ; que (2) le scanner-laser terrestre apporte des informations sur les zones tourmentées et difficiles d'observation mais de manière limitée spatialement ; que (3) l'utilisation des images satellitaires haute résolution est encore inadaptée, et enfin (4) que les images terrestres de face constituent un moyen rapide, efficace et peu onéreux de suivi de sites. Concernant les sites choisis, nous montrons que le mouvement de versant de Sedrun (Suisse) subit un ralentissement constant depuis 2002 qui fait suite à une augmentation des vitesses de 150% à partir de 1990. La description précise de la cinématique, alliée à la géologie de terrain, renseigne quant à ses évolutions possibles. La zone frontale du site de Séchilienne (Isère) se translate plus qu'elle ne s'affaisse ; par les acquisitions du scanner-laser, nous démontrons la rotation vers l'aval de ses compartiments structuraux. Enfin, le site du tunnel des Cliets (gorges de l'Arly) subit une décompression difficilement visible par imagerie. Finalement, nous proposons un "guide" aux techniques d'imagerie applicables à l'auscultation de versant instable, en fonction des configurations de terrain. Enfin, l'imagerie a montré tout son potentiel et sa complémentarité avec les techniques conventionnelles de suivi des mouvements de versants.
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Costa, Jacopo. "Dense image matching per la ricostruzione tridimensionale di monumenti storici da immagini acquisite con camere non metriche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Lo sviluppo tecnologico degli ultimi anni ha permesso di incrementare notevolmente le prestazioni dei personal computer e la qualità delle fotocamere digitali, consentendo la possibilità di acquistare tali prodotti a prezzi sempre più contenuti. Le attuali e rilevanti capacità computazionali dei processori e la possibilità di acquisire sempre più facilmente immagini digitali ad alta risoluzione hanno favorito l’incontro delle tecniche proprie della Computer Vision con quelle della fotogrammetria digitale terrestre (close range photogrammetry). Sotto queste premesse negli ultimi anni si è registrato un notevole sviluppo degli algoritmi di ricostruzione tridimensionale a partire da immagini digitali (algoritmi image-based), che al giorno d’oggi permettono elaborazioni automatiche in tempo reale senza sacrificare l’accuratezza metrica, rendendo possibile ottenere prodotti sempre più analoghi a quelli derivabili da scansioni laser con costi decisamente inferiori. Si è quindi voluto indagare quale fosse la validità dei prodotti restituiti con tali algoritmi eseguendo un rilievo fotogrammetrico e una scansione laser della facciata della basilica di Sant’Apollinare Nuovo a Ravenna. Per ogni prodotto ottenuto sono state effettuate analisi qualitative e quantitative per poter giungere a un giudizio critico sull’efficacia di tali algoritmi, in relazione ad un loro reciproco confronto e al paragone con la consolidata tecnica del rilievo laser scanner.
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Ferrari, Fabiano. "Visualização e interpretação de modelos digitais de afloramentos utilizando laser scanner terrestre." Universidade do Vale do Rio dos Sinos, 2011. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4143.

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FAPERGS - Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul
O sistema LIDAR obtém nuvens de pontos georreferenciadas que podem ser convertidas em Modelos Digitais de Afloramentos (MDAs). Os pulsos de laser são gerados e emitidos por um Laser Scanner Terrestre, que atinge a superfície do afloramento em diferentes pontos. Estes objetos refletem o pulso incidente, que volta para o equipamento. Com isso, a distância entre o sensor e o objeto é determinada com base no intervalo de tempo entre a emissão e o retorno do pulso. Para fins de Modelagem Digital de Afloramentos (MDA) o uso dessa técnica é recente e necessita do desenvolvimento de pesquisas. Diante disso, o objetivo desse trabalho foi estabelecer uma sequencia de métodos envolvendo a aquisição e processamento de nuvem de pontos e a visualização e interpretação de superfícies e volumes de um Modelo Digital de Afloramentos (MDA). A Rocha da Pedra Pintada, localizado no Rio Grande do Sul na Cidade de Caçapava do Sul, foi imageado a partir de 7 estações e a nuvem totalizou 17 milhões de pontos, que foi convertida, após processamento, em um MDA. Para a interpretação geológica, utilizou-se a técnica de ortorretificação para sobrepor a nuvem de pontos a fotografias de alta resolução do afloramento, o que agregou qualidade na visualização e interpretação do MDA. Dificuldades nas etapas de tratamento dos dados ocorreram em razão do grande volume de dados, da ausência de recursos de otimização de processamento e da limitação no gerenciamento de banco de dados. Além disso, faz-se necessário desenvolver um aplicativo eficiente de visualização tridimensional com ferramentas especificas de interpretação geológica.
The LIDAR system provides georeferrenced clouds with thousand-to-million of points which can be converted in digital outcrops models. A laser beam is emitted and captured by a laser scanner after reaching an outcrop in many different positions. Based on the travel time between sensor and outcrop it is possible to determine the position of each point with high accuracy. This technique is still a novelty for applied studies in Geology, especially in Digital Outcrop Models (DOMs), being necessary research and development. Thus, the goal of this work was establish a workflow concerning acquisition and processing of point clouds, and visualization and geological interpretation of DOMs. The Pedra Pintada, located in the state Rio Grande do Sul in the city Caçapava do Sul outcrop was imaged from seven different stations and the cloud has 17 million points, converted in a DOM after processing. The geological interpretation was made possible by the orthorectification technique, in which a high resolution photograph overlies the point cloud and the visual quality is obtained. The huge volume of data, the lack of optimized processing resources and the inadequate dataset management became visualization and interpretation of DOMs a difficult task. Furthermore, it is necessary to develop a software with an efficient tridimensional visualization system with specific tools for geological interpretations.
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Souza, Marcelo Kehl de. "Laser scanner terrestre: uma ferramenta eficaz para medidas de estruturas geológicas em afloramentos." Universidade do Vale do Rio dos Sinos, 2012. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4461.

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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
FAPERGS - Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul
Petrobras - Petróleo Brasileiro S. A.
PROSUP - Programa de Suporte à Pós-Gradução de Instituições de Ensino Particulares
Este estudo desenvolveu um método para a obtenção da orientação espacial de estruturas geológicas planares com a utilização da técnica Light Detection and Ranging (LIDAR), especificamente com o Laser Scanner Terrestre. A área de estudo localiza-se na Incopel- pedreira de basalto, no município de Estância Velha, estado do Rio Grande do Sul. O estudo cobriu levantamento de campo com as determinações das atitudes de planos utilizando bússola e clinômetro e o imageamento digital utilizando a técnica LIDAR. Três métodos foram utilizados para computar os planos selecionados na nuvem de pontos, sendo eles: Três pontos, Regressão Planar e Momento de Inércia. A eficiência dos métodos utilizados foi avaliada pelos métodos tradicionais de medidas (bússola e clinômetro). O método de Três Pontos é simples e fácil para computar a orientação de planos, contudo, não possui ferramentas de análise de qualidade. O método de Regressão Planar é efetivo para medir a orientação de planos e possui ferramenta de análise de grau de ajuste ao plano calculado. O método de Análise de Momento de Inércia, além de apresentar menores diferenças em relação aos métodos tradicionais, apresenta análise de grau de ajuste e análise da confiabilidade com relação aos planos computados, provando ser uma ferramenta eficiente para o processamento da orientação de planos a partir de pontos. Palavras-chave: LIDAR. Formação Serra Geral. Orientação de fraturas. Três Pontos. Análise de Momento de Inércia. Regressão Planar.
This study aimed to build a model to survey geological planar structures geometries by using Light Detection and Ranging (LIDAR) technique, specifically with the Terrestrial Laser Scanner. The area chosen for the survey and application of the proposed method is located at Incopel basalt quarry, in the town of Estância Velha, State of Rio Grande do Sul. The study covered a field survey with the determinations of planes attitude using compass and clinometer and digital images using LIDAR. Three methods were used to compute the selected planes in the point cloud, namely: Three Points, Planar Regression, and Moment of Inertia analysis. The methods were evaluated and compared to traditional methods of measurement (compass and clinometer). The Three Point method is quick and simple to measure planar geological structures orientation; however, it does not have any tool for quality analysis. The Planar Regression method proves to be effective in calculating the orientation of planes and features a tool for analyzing the degree of fit to the calculated plane. The Moment of Inertia presents minor measurement differences compared to traditional methods, and provides degree of fit and reliability analysis to the calculated plane, proving to be an efficient tool for processing the orientation of planes from points.
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Gazziro, Mario Alexandre. "Projeto e construção de um scanner antropométrico baseado no método de triangulação a laser." Universidade Federal de São Carlos, 2005. https://repositorio.ufscar.br/handle/ufscar/619.

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Three-dimensional (3D) surface anthropometry enables us to extend the study to 3D geometry and morphology of human body. The purpose of this study is to build a whole 3D body scanner. Using lasers and cameras mounted on a scanning platform moved by a single motor and controlled by an embedded controller, a device has been implemented to capture the shape of the entire human body. One application case study (body fat percentage) is presented. The results suggests that the developed scanner can be useful for that particular case study and other like size surveying and medicine.
Um scanner antropométrico possibilita ampliar nossos estudos sobre geometria e morfologia tridimensional do corpo humano. O propósito desse estudo é construir um scanner 3D para todo o corpo humano. Utilizando lasers e câmeras instalados em uma plataforma movida por um único motor, controlado por um dispositivo dedicado, foi implementado um equipamento que permite a aquisição das formas do corpo inteiro. Uma aplicação para estudo de caso (determinação do percentual de gordura) é apresentada. Os resultados sugerem que o scanner desenvolvido pode ser útil para este caso de estudo em particular, além de outras aplicações tais como em censos antropométricos e em medicina.
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Silva, Victor de Albuquerque. "Proposta metodol?gica para o imageamento digital e modelagem virtual 3d de um bloco de rochas travertinas." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18836.

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In this paper we present the methodological procedures involved in the digital imaging in mesoscale of a block of travertines rock of quaternary age, originating from the city of Acquasanta, located in the Apennines, Italy. This rocky block, called T-Block, was stored in the courtyard of the Laborat?rio Experimental Petr?leo "Kelsen Valente" (LabPetro), of Universidade Estadual de Campinas (UNICAMP), so that from it were performed Scientific studies, mainly for research groups universities and research centers working in brazilian areas of reservoir characterization and 3D digital imaging. The purpose of this work is the development of a Model Solid Digital, from the use of non-invasive techniques of digital 3D imaging of internal and external surfaces of the T-Block. For the imaging of the external surfaces technology has been used LIDAR (Light Detection and Range) and the imaging surface Interior was done using Ground Penetrating Radar (GPR), moreover, profiles were obtained with a Gamma Ray Gamae-spect?metro laptop. The goal of 3D digital imaging involved the identification and parameterization of surface geological and sedimentary facies that could represent heterogeneities depositional mesoscale, based on study of a block rocky with dimensions of approximately 1.60 m x 1.60 m x 2.70 m. The data acquired by means of terrestrial laser scanner made available georeferenced spatial information of the surface of the block (X, Y, Z), and varying the intensity values of the return laser beam and high resolution RGB data (3 mm x 3 mm), total points acquired 28,505,106. This information was used as an aid in the interpretation of radargrams and are ready to be displayed in rooms virtual reality. With the GPR was obtained 15 profiles of 2.3 m and 2 3D grids, each with 24 sections horizontal of 1.3 and 14 m vertical sections of 2.3 m, both the Antenna 900 MHz to about 2600 MHz antenna. Finally, the use of GPR associated with Laser Scanner enabled the identification and 3D mapping of 3 different radarf?cies which were correlated with three sedimentary facies as had been defined at the outset. The 6 profiles showed gamma a low amplitude variation in the values of radioactivity. This is likely due to the fact of the sedimentary layers profiled have the same mineralogical composition, being composed by carbonate sediments, with no clay in siliciclastic pellitic layers or other mineral carrier elements radioactive
Nesse trabalho s?o apresentados os procedimentos metodol?gicos envolvidos no imageamento digital em mesoescala de um bloco de rochas travertinas de idade quatern?ria, oriundas da cidade de Acquasanta, situada na cordilheira dos Apeninos, na It?lia. Esse bloco rochoso, denominado de T-Block, foi armazenado no p?tio do Laborat?rio Experimental de Petr?leo "Kelsen Valente" (LabPetro), da Universidade Estadual de Campinas (UNICAMP) para que a partir dele fossem realizados estudos cient?ficos, principalmente para grupos de pesquisa das universidades e centros de pesquisa brasileiros que atuam nas ?reas de caracteriza??o de reservat?rio e imageamento digital 3D. A proposta deste trabalho consiste na elabora??o de um Modelo de S?lido Digital, a partir da utiliza??o de t?cnicas n?o-invasivas de imageamento digital 3D das superf?cies interna e externa do T-Block. Para o imageamento das superf?cies externas foi utilizada a tecnologia LIDAR (Light Detection and Range) e para o imageamento das superf?cies internas foi feita a utiliza??o do Ground Penetrating Radar (GPR), al?m disso, foram adquiridos perfis de Gamma Ray com um Gamaespect?metro port?til. O objetivo do imageamento digital 3D consistiu na identifica??o e parametriza??o de superf?cies geol?gicas e de f?cies sedimentares que pudessem representar heterogeneidades deposicionais em mesoescala, tomando como base de estudo um bloco rochoso com dimens?es de aproximadamente 1,60m x 1,60m x 2,70 m. Os dados adquiridos por meio do Laser Scanner terrestre disponibilizaram informa??es espaciais georreferenciadas da superf?cie do bloco (X, Y, Z), al?m de valores de varia??o de intensidade de retorno do raio laser e dados RGB com alta resolu??o (3 mm x 3 mm), totalizando 28.505.106 pontos adquiridos. Essas informa??es foram utilizadas como auxilio durante a interpreta??o dos radargramas e est?o prontas para ser exibidas em salas de realidade virtual. Com o GPR, foram adquiridos 15 perfis de 2,3 m e 2 grids 3D, cada um com 24 se??es horizontais de 1,3 m e 14 se??es verticais de 2,3 m, tanto com a antena de 900 MHz quanto com a antena de 2600 MHz. Por fim, o uso do GPR associado ao Laser Scanner possibilitou a identifica??o e mapeamento 3D de 3 radarf?cies distintas as quais foram correlacionadas a 3 f?cies sedimentares j? que j? haviam sido definidas no inicio do trabalho. Os 6 perfis de raios gama mostraram uma baixa varia??o na amplitude dos valores de radioatividade. Provavelmente, isso ocorreu devido ao fato das camadas sedimentares perfiladas possu?rem a mesma composi??o mineral?gica, sendo compostas por sedimentos carbon?ticos, com aus?ncia de argila silicicl?stica nas camadas mais pel?ticas ou de outro mineral portador de elementos radioativos
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Book chapters on the topic "Terrain laser scanner"

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Wu, Jiang, Qianru Li, Miaozhuang He, and Feng Zhang. "A Terrain Model Generation Method Based on 2D Plan Laser Scanner for Micro UAV Autonomous Flight." In Lecture Notes in Electrical Engineering, 215–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34522-7_24.

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Coqueugniot, Hélène. "Paléo-imagerie par rayons X : une méthode d’exploration transdisciplinaire, de l’archéologie à la chirurgie Hélène." In Regards croisés: quand les sciences archéologiques rencontrent l'innovation, 139–56. Editions des archives contemporaines, 2017. http://dx.doi.org/10.17184/eac.3794.

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L’imagerie par rayons X, bi- et tridimensionnelle, est devenue une méthodologie incontournable dans de nombreux champs disciplinaires dont celui des sciences archéologiques. Contrairement aux autres méthodes d’imagerie permettant seulement des acquisitions de surface (photographie et photogrammétrie, scanner laser), le rayonnement X permet également des acquisitions de volume, ce qui s’avère être un avantage fondamental dans les indications nécessitant de visualiser du contenu sans toucher au contenant. Cette propriété physique du rayonnement X de traverser la matière et de révéler l’intérieur des objets sur des images projetées en 2 dimensions a été appliquée très tôt au domaine archéologique, dès l’invention même de la radiologie en 1895, en parallèle avec son développement fulgurant dans le domaine médical. Les applications « archéométriques » des rayons X ont fait émerger le terme de paléoradiologie, qui définit l’application du rayonnement X à l’étude de matériaux bio-archéologiques. Un siècle après, les méthodes d’acquisition par rayons X se sont considérablement développées (radiologie numérique, tomodensitométrie, microtomographie RX) et le traitement des images a ouvert l’accès, grâce à la révolution numérique, à une nouvelle dimension. L’introduction de cette troisième dimension pour l’imagerie radiologique a permis de nombreuses avancées en recherches fondamentale et appliquée dans le domaine archéologique, tout en renouvelant considérablement les possibilités de conservation et de valorisation du patrimoine. En constituant un réseau interdisciplinaire, nous avons développé, à partir de la tomodensitométrie, une chaîne complète d’imagerie tridimensionnelle, initiée pour l’anthropologie biologique et qui trouve ses applications dans le domaine de l’archéologie et plus récemment dans celui de la chirurgie reconstructrice. En parallèle avec l’utilisation des rayons X, d’autres méthodes d’acquisitions d’images apportent également leurs contributions à l’archéologie. Leur intégration dans une approche transdisciplinaire utilisant l’ensemble des modalités non-destructives d’acquisition d’images et de leur représentation (multimodale et multidimensionnelle) a été nommée paléo-imagerie. La paléo-imagerie s’exprime à la fois sur le terrain et en laboratoire, fonctionne de manière diachronique (sans focus chronologique, de la préhistoire aux périodes contemporaines) et holistique en contextualisant l’objet dans son environnement archéologique. Dans cette optique, la paléo-imagerie a toute sa place au sein des méthodes de l’archéométrie
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Piratelli-Filho, Antonio, Laura Daniela Ordierez Zuñiga, and Rosenda Valdes Arencibia. "APLICAÇÃO DE TESTES DE REPETITIVIDADE E REPRODUTIVIDADE (ReR) PARA VERIFICAÇÃO DE SCANNER LASER 3D." In Tópicos em ciências exatas e da Terra. Editora Conhecimento Livre, 2021. http://dx.doi.org/10.37423/210604385.

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Arias-Perez, Benjamin. "Stereoscopic Precision of the Large Format Digital Cameras." In Remote Sensing [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97125.

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Stereoscopic vision is fundamental in the task of photogrammetric restitution (stereo compilation) in which, by inserting a floating mark in the 3D observation of pairs of images, it is possible to draw the elements of the terrain in space and obtain cartography of a part of the land cover from aerial images. Initially with film photographs, which were later scanned, and finally with large format digital cameras that began in the 2000s, photogrammetry has undergone a series of technological revolutions up to the present time. In this chapter, after a brief exposition of the basic principles of photogrammetric restitution, a review of current large-format digital cameras and their main implications in restitution is made, which, despite the advances and other similar semi-automatic products (DTM, orthophoto) is still manual and must be operated by a person with the implications that this entails in stereoscopic vision.
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Pereira, Tatiane Fortes, Luciana Arnt Abichequer, and Luis Eduardo de Souza. "PROPOSTA DE RETOMADA E EXPANSÃO PARA UMA MINA DE CALCÁRIO UTILIZANDO EQUIPAMENTO LASER SCANNER TERRESTRE." In Ciências Tecnológicas, Exatas e da Terra e seu Alto Grau de Aplicabilidade 2, 79–90. Atena Editora, 2020. http://dx.doi.org/10.22533/at.ed.7702014079.

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Conference papers on the topic "Terrain laser scanner"

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Wan Aziz, W. A., M. Z. Syahmi, A. Anuar, and Nizam T. Khairul. "Terrain slope analyses between terrestrial laser scanner and airborne laser scanning." In 2012 IEEE Control and System Graduate Research Colloquium (ICSGRC). IEEE, 2012. http://dx.doi.org/10.1109/icsgrc.2012.6287169.

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Prempraneerach, Pradya, and Ruj Akavipat. "Landslide Terrain Survey/Reconstruction Using Developed Terrestrial Laser Scanner." In 2019 16th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). IEEE, 2019. http://dx.doi.org/10.1109/ecti-con47248.2019.8955243.

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Abershitz, Avi, Rafi Rubinets, and Shlomit Gali. "Autonomous Landing of Unmanned Rotorcraft Aerial Vehicle - Laser Scanner Based Terrain Mapping." In AIAA Infotech@Aerospace Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-1832.

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Qiu, Chunxin, Xiaorui Zhu, and Liping Liu. "Robot Terrain Inclination model extracted from laser scanner data for outdoor environment." In 2012 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2012. http://dx.doi.org/10.1109/icma.2012.6284397.

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Maarten Uijt de Haag, A. Vadlamani, J. L. Campbell, and J. Dickman. "Application of laser range scanner based terrain referenced navigation systems for aircraft guidance." In Third IEEE International Workshop on Electronic Design, Test and Applications (DELTA'06). IEEE, 2006. http://dx.doi.org/10.1109/delta.2006.15.

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Zhou, B., and X. Z. Dai. "Set-membership based real-time terrain modeling of mobile robots with a laser scanner." In 2010 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2010. http://dx.doi.org/10.1109/icma.2010.5589112.

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ŁABȨCKI, PRZEMYSŁAW, DAWID ROSIŃSKI, and PIOTR SKRZYPCZYŃSKI. "TERRAIN PERCEPTION AND MAPPING IN A WALKING ROBOT WITH A COMPACT 2D LASER SCANNER." In Proceedings of the 13th International Conference on Climbing and Walking Robots and the Support Technologies for Mobile Machines. WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814329927_0120.

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Uijt de Haag, Maarten, Jacob Campbell, and Frank van Graas. "Integration of a synthetic vision system with airborne laser range scanner-based terrain referenced navigation for precision approach guidance." In Defense and Security, edited by Jacques G. Verly. SPIE, 2005. http://dx.doi.org/10.1117/12.611375.

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Niewola, Adam, Leszek Podsedkowski, and Jakub Niedzwiedzki. "Point-to-Surfel-Distance- (PSD-) Based 6D Localization Algorithm for Rough Terrain Exploration Using Laser Scanner in GPS-Denied Scenarios." In 2019 12th International Workshop on Robot Motion and Control (RoMoCo). IEEE, 2019. http://dx.doi.org/10.1109/romoco.2019.8787362.

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Vadlamani, Ananth K., and Maarten Uijt de Haag. "Aerial vehicle navigation over unknown terrain environments using inertial measurements and dual airborne laser scanners or flash ladar." In Defense and Security Symposium, edited by Monte D. Turner and Gary W. Kamerman. SPIE, 2007. http://dx.doi.org/10.1117/12.718946.

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Reports on the topic "Terrain laser scanner"

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Jackson, Sam S., and Michael J. Bishop. Use of a High-Resolution 3D Laser Scanner for Minefield Surface Modeling and Terrain Characterization: Temperate Region. Fort Belvoir, VA: Defense Technical Information Center, August 2005. http://dx.doi.org/10.21236/ada438210.

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Jackson, Sam S., and Michael J. Bishop. Use of a High-Resolution 3D Laser Scanner for Minefield Surface Modeling and Terrain Characterization: Temperature Region. Fort Belvoir, VA: Defense Technical Information Center, August 2005. http://dx.doi.org/10.21236/ada443802.

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