Comparison between point cloud processing techniques

Catalucci, Sofia; Marsili, Roberto; Moretti, Michèle; Rossi, Gianluca

doi:10.1016/j.measurement.2018.05.111

Cited by 16 publications

(10 citation statements)

References 4 publications

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“…In the result of laser scanning, point cloud is obtained, which in the course of processing is created into point cloud model and georeferenced. Point cloud consists of millions points, each point contains information on coordinates of its location and intensity of the reflected signal (Catalucci et al, 2018). Processing of point cloud and preparation of surface relief model was realized in Bently MicroStation with add-in of TerraSolid programm package.…”

Section: Discussion and Resultsmentioning

confidence: 99%

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

et al. 2018

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In the study, creation of 3D surface relief model in Jelgava, for southern part of the Castle Island is depicted. Information about remote sensing, its historical development, as well as directions of remote sensing, development of photogrammetry and laser scanning is summarized and analysed. Principles of work and methods of photogrammetry and laser scanning. Information about creation of surface relief model from planning of unmanned aircraft, data capture and alignment to the end product – surface relief model. Application of evaluation of data obtained. The purpose of the study – to create 3D surface relief model in Jelgava, for the southern part of the Castle Island. Tasks of the study – to consider development and improvement of photogrammetry and its processes, as well as development of laser scanning and principles of its work; to research, analyse and describe technological processes of laser scanning; to create 3D surface relief model in Jelgava, for the southern part of the Castle Island; to perform comparison of surface models obtained and describe application of laser scanning. Preparation of surface relief model is time-consuming process, which includes flight planning and preparation of end-product. End-products obtained in data processing of laser scanning have very broad usage in many sectors related to geodesy and construction.

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Section: Discussion and Resultsmentioning

confidence: 99%

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

et al. 2018

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“…Using comparative analysis based on linear analysis and volumetric error analysis allows us to obtain an evaluation of the performances of the scanners [61]. In particular, the evaluation based on linear distances deriving from the commercial software shows a lower metrological performance compared to desktop ones.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Accuracy of Four Digital Methods by Linear and Volumetric Analysis of Dental Impressions

et al. 2019

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The quality of dental arch impression has a substantial role in the precision of the intervention. It is traditionally acquired with resins that solidify when in contact with the air. Compared to that method, digital impression gives great advantages and, together with three-dimensional (3D) digitization devices, allows a simplification of the digital impression process. The growing adoption of such systems by a large number of dental clinics determines the need for an in-depth evaluation of the accuracy and the precision of the different systems. The aim of this work is to define a methodology for the evaluation of the accuracy and precision of 3D intraoral and desktop scanning systems, by using volumetric and linear methods. The replica of a tooth was realized with zirconium; afterward, high-accuracy point clouds of the master model were acquired by a coordinate measurement machine (CMM). In this way, the dimensions of the replica were accurately known. An intraoral scanner (I) and three desktops (D1, D2, D3) were then used to scan the replica. The geometry resulting from the CMM was compared with the ones derived from the scanners, using two different commercial programs (Geomagic and 3-Matic) and a custom-developed algorithm (MATLAB). Geomagic showed the mean values to be in a range from 0.0286 mm (D1) to 0.1654 mm (I), while 3-Matic showed mean values from −0.0396 mm (D1) to 0.1303 mm (I). MATLAB results ranged from 0.00014 mm (D1) to 0.00049 mm (D2). The probability distributions of the volumetric error of the measurements obtained with the different scanners allow a direct comparison of their performances. For the results given by our study, the volumetric approach that we adopted appears to be an excellent system of analysis.

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“…Minerals 2020, 10, 174 3 of 19 template for the application of UAV in mapping river landscape as a research tool for this type of landscape [22]; the limits and advantages of photomodeling compared to structured light 3D scanning systems were demonstrated by Catalucci et al [23]; Fraštia et al provided a comprehensive and accurate macro-view of the morphology of inaccessible rock towers and blocks using LiDAR, which could not be obtained from field survey [24] and other studies. For related industries, such as civil engineering and architecture, we recognize TLS applications in documenting the actual state of buildings and their deformations [25][26][27]; in mechanical engineering to document complex machinery [28,29]; or transport engineering [30].…”

Section: Study Areamentioning

confidence: 99%

“…Additionally, there are also several papers dealing with the processing of data measured and obtained by TLS and digital photogrammetry (point clouds). For example, Rusnák et al provided a template for the application of UAV in mapping river landscape as a research tool for this type of landscape [22]; the limits and advantages of photomodeling compared to structured light 3D scanning systems were demonstrated by Catalucci et al [23]; Fraštia et al provided a comprehensive and accurate macro-view of the morphology of inaccessible rock towers and blocks using LiDAR, which could not be obtained from field survey [24] and other studies.…”

Section: Introductionmentioning

confidence: 99%

TLS and SfM Approach for Bulk Density Determination of Excavated Heterogeneous Raw Materials

et al. 2020

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A frequently recurring problem in the extraction of mineral resources (especially heterogeneous mineral resources) is the rapid operative determination of the extracted quantity of raw material in a surface quarry. This paper deals with testing and analyzing the possibility of using unconventional methods such as digital close-range photogrammetry and terrestrial laser scanning in the process of determining the bulk density of raw material under in situ conditions. A model example of a heterogeneous deposit is the perlite deposit Lehôtka pod Brehmi (Slovakia). Classical laboratory methods for determining bulk density were used to verify the results of the in situ method of bulk density determination. Two large-scale samples (probes) with an approximate volume of 7 m 3 and 9 m 3 were realized in situ. 6 point samples (LITH) were taken for laboratory determination. By terrestrial laser scanning (TLS) measurement from 2 scanning stations, point clouds with approximately 163,000/143,000 points were obtained for each probe. For Structure-from-Motion (SfM) photogrammetry, 49/55 images were acquired for both probes, with final point clouds containing approximately 155,000/141,000 points. Subsequently, the bulk densities of the bulk samples were determined by the calculation from in situ measurements by TLS and SfM photogrammetry. Comparison of results of the field in situ measurements (1841 kg·m −3 ) and laboratory measurements (1756 kg·m −3 ) showed only a 4.5% difference in results between the two methods for determining the density of heterogeneous raw materials, confirming the accuracy of the used in situ methods. For the determination of the loosening coefficient, the material from both large-scale samples was transferred on a horizontal surface. Their volumes were determined by TLS. The loosening coefficient for the raw material of 1.38 was calculated from the resulting values.

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Comparison between point cloud processing techniques

Cited by 16 publications

References 4 publications

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

Possibilities of use of remote sensing technology in survey process in the territory of Pils island in Jelgava

Evaluation of the Accuracy of Four Digital Methods by Linear and Volumetric Analysis of Dental Impressions

TLS and SfM Approach for Bulk Density Determination of Excavated Heterogeneous Raw Materials

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