scholarly journals PANORAMA IMAGE SETS FOR TERRESTRIAL PHOTOGRAMMETRIC SURVEYS

2016 ◽  
Vol III-5 ◽  
pp. 159-166 ◽  
Author(s):  
L. Piermattei ◽  
W. Karel ◽  
A. Vettore ◽  
N. Pfeifer
Keyword(s):  
Control Point ◽  
Laser Scanner ◽  
3D Models ◽  
Target Object ◽  
Point Of View ◽  
Test Field ◽  
Control Data ◽  
Projection Center ◽  
And Control

High resolution 3D models produced from photographs acquired with consumer-grade cameras are becoming increasingly common in the fields of geosciences. However, the quality of an image-based 3D model depends on the planning of the photogrammetric surveys. This means that the geometric configuration of the multi-view camera network and the control data have to be designed in accordance with the required accuracy, resolution and completeness. From a practical application point of view, a proper planning (of both photos and control data) of the photogrammetric survey especially for terrestrial acquisition, is not always ensured due to limited accessibility of the target object and the presence of occlusions. To solve these problems, we propose a different image acquisition strategy and we test different geo-referencing scenarios to deal with the practical issues of a terrestrial photogrammetric survey. The proposed photogrammetric survey procedure is based on the acquisition of a sequence of images in panorama mode by rotating the camera on a standard tripod. The offset of the pivot point from the projection center prevents the stitching of these images into a panorama. We demonstrate how to still take advantage of this capturing mode. The geo-referencing investigation consists of testing the use of directly observed coordinates of the camera positions, different ground control point (GCP) configurations, and GCPs with different accuracies, i.e. artificial targets vs. natural features. Images of the test field in a low-slope hill were acquired from the ground using an SLR camera. To validate the photogrammetric results a terrestrial laser scanner survey is used as benchmark.

scholarly journals PANORAMA IMAGE SETS FOR TERRESTRIAL PHOTOGRAMMETRIC SURVEYS

2016 ◽  
Vol III-5 ◽  
pp. 159-166 ◽  
Author(s):  
L. Piermattei ◽  
W. Karel ◽  
A. Vettore ◽  
N. Pfeifer
Keyword(s):  
Control Point ◽  
Laser Scanner ◽  
3D Models ◽  
Target Object ◽  
Point Of View ◽  
Test Field ◽  
Control Data ◽  
Projection Center ◽  
And Control

High resolution 3D models produced from photographs acquired with consumer-grade cameras are becoming increasingly common in the fields of geosciences. However, the quality of an image-based 3D model depends on the planning of the photogrammetric surveys. This means that the geometric configuration of the multi-view camera network and the control data have to be designed in accordance with the required accuracy, resolution and completeness. From a practical application point of view, a proper planning (of both photos and control data) of the photogrammetric survey especially for terrestrial acquisition, is not always ensured due to limited accessibility of the target object and the presence of occlusions. To solve these problems, we propose a different image acquisition strategy and we test different geo-referencing scenarios to deal with the practical issues of a terrestrial photogrammetric survey. The proposed photogrammetric survey procedure is based on the acquisition of a sequence of images in panorama mode by rotating the camera on a standard tripod. The offset of the pivot point from the projection center prevents the stitching of these images into a panorama. We demonstrate how to still take advantage of this capturing mode. The geo-referencing investigation consists of testing the use of directly observed coordinates of the camera positions, different ground control point (GCP) configurations, and GCPs with different accuracies, i.e. artificial targets vs. natural features. Images of the test field in a low-slope hill were acquired from the ground using an SLR camera. To validate the photogrammetric results a terrestrial laser scanner survey is used as benchmark.

scholarly journals Application of modern 3d image acquisition systems to the morphological analysis of faces: a novel approach for the assessment of facial growth

2020 ◽  
Vol 7 (4) ◽  
pp. 268-273
Author(s):  
Gibelli Daniele Maria ◽  
◽  
Poppa Pasquale ◽  
Cappella Annalisa ◽  
Rosati Riccardo ◽  
...  
Keyword(s):  
Morphological Analysis ◽  
Three Dimensional ◽  
Laser Scanner ◽  
3D Models ◽  
Point Of View ◽  
Topographic Map ◽  
Facial Growth ◽  
General Increase ◽  
Novel Approach ◽  
Point To Point

Introduction The assessment of facial growth has always had a relevant importance in anatomy and morphological sciences. This article aims at presenting a method of facial superimposition between 3D models which provides a topographic map of those facial areas modified by growth. Methodology Eight children aged between 6 and 10 years were recruited. In December 2010 they underwent a 3D scan by the Vivid 910 laser scanner (Konica Minolta, Osaka, Japan). The same procedures were performed another five times, in June 2011, September 2011, January 2012 and September 2012; in total 6 analyses were performed on the same subjects in a time span of 21 months. Three-dimensional digital models belonging to the same individual were then superimposed on each other according to 11 facial landmarks. Three comparisons were performed for each individual, referring to the period between December 2010 and June 2011, between June 2011 and January 2012 and between January and September 2012. Results Results show that the protocol of superimposition gives a reliable image of facial growth with high sensibility: in detail, even the slight facial modifications due to different expressions are recorded. The method can also quantify the point-to-point difference between the two models, and therefore give an indication concerning the general increase or decrease of facial volume. Conclusion This approach may provide useful indications for the analysis of facial growth on a large sample and give a new point of view of the complex field of face development.

scholarly journals INTEGRATION OF ACTIVE SENSORS FOR GEOMETRIC ANALYSIS OF THE CHAPEL OF THE HOLY SHROUD

2019 ◽  
Vol XLII-2/W15 ◽  
pp. 149-156 ◽  
Author(s):  
S. Barba ◽  
A. di Filippo ◽  
M. Limongiello ◽  
B. Messina
Keyword(s):  
Laser System ◽  
Geometric Analysis ◽  
Laser Scanner ◽  
3D Models ◽  
Active Sensors ◽  
Survey Techniques ◽  
Accuracy And Precision ◽  
Complex Process

<p><strong>Abstract.</strong> The digital acquisition of Cultural Heritage is a complex process, highly depending on the nature of the object as well as the purpose of its detection. Even if there are different survey techniques and sensors that allow the generation of realistic 3D models, defined by a good metric quality and a detail consistent with the geometric characteristics of the object, an interesting goal could be to develop a unified treatment of the methodologies. The Chapel of the Holy Shroud, with its intricate articulation, becomes the benchmark to test an integrated protocol between a terrestrial laser scanner (TLS) and a wearable mobile laser system (WMLS) based on a SLAM approach. In order to quantify the accuracy and precision of the latter solution, several forms of comparison are proposed. For the case study the ZEB-REVO, produced and marketed by GeoSLAM, is tested. Computations of cloud-to-cloud (C2C) absolute distances, comparisons of slices and extractions of planar features are performed, using stationary laser scanner (Faro Focus<sup>S</sup> S350) as a reference. Finally, the obtained results are reported, allowing us to assert that the quality of the WMLS measurements is compatible with the data provided by the manufacturer, thus making the instrumentation suitable for certain specific applications.</p>

scholarly journals Environmental quality of marginal territories using comparative analysis of fluctuating asymmetry methods and determining the area of leaf damage

2020 ◽  
Vol 210 ◽  
pp. 02009
Author(s):  
Aleksander Lugovskoy ◽  
Sergey Gildenskiold ◽  
Tatjana Krylova ◽  
Nina Fomina
Keyword(s):  
Comparative Analysis ◽  
Fluctuating Asymmetry ◽  
Life Support ◽  
Point Of View ◽  
Leaf Damage ◽  
Territorial Development ◽  
Leisure Facilities ◽  
Favorable Conditions ◽  
And Control

The paper assess marginal and control territories within the Moscow Metropolitan area using a comparative analysis of fluctuating asymmetry method and determining the area of leaf damage to obtain a comprehensive assessment of the territory from the point of view of human habitation with minimal comfort parameters within the sensitivity of plants. The results of the combined analysis of two methods are obtained, which confirm the possibility of their use and the representativeness of the results obtained in assessing the comfort of the environment. The assessment of the quality of the environment in marginal territories was made by quantitative and qualitative indicators for the rational use of land resources, their involvement in economic turnover with the creation of favorable conditions for ensuring the flow of social processes of territorial development and comfortable life support of the population. It was proposed that socially-oriented infrastructure, leisure facilities, and social and cultural facilities have been formed in these territories with a sufficiently large and diverse number of types and forms of employment for the population, which should become the basis for the development of marginal territories.

The Possibilities of Increasing the Flexibility of Intelligent Assembly Cell

2010 ◽  
Author(s):  
Erika Hruskova ◽  
Radovan Holubek ◽  
Karol Velisek
Keyword(s):  
Essential Element ◽  
Relevant Information ◽  
3D Models ◽  
Point Of View ◽  
Assembly Cell ◽  
Assembly Technology ◽  
Automation Tools ◽  
And Control ◽  
Vega 1 ◽  
System Point

In relation to how the complexity of modern assembly technology increases, requirements for precise, fast and relevant information specifically for the assemble process also increase. Automation allows the fast and precise measurement of various parameters, assessment of the values obtained and the implementation of the required measures in real time. Automation tools allow evaluation, parameter measurement, comparison and application via computer technology and various software resources. One of the aims of the VEGA 1/0206/09 Intelligent assembly cell project solution as per our institute is the creation of a means of forming assembly cells, their duly defined critical placements, verification of the assembly process as a dynamic system of consistency from a technological, handling and control sub-system point of view via means of 3D models in CATIA environment software. Authors of this paper are members and experts of project group (VEGA 1/0206/09) interested in robotics, manipulators and technological devices. Whereas mechanical production trends in the 21st century tend to focus more on resilience and flexibility, the authors of this article have taken into consideration the possibility of re-evaluating the above-mentioned data — which is an essential element in terms of raising flexibility, thus definitively contributing to increased competitiveness.

Human Centered Control in Robotics and Consumer Product Design

1993 ◽  
Vol 115 (2B) ◽  
pp. 271-280 ◽  
Author(s):  
Harichiko Asada ◽  
Clifford C. Federspiel ◽  
Sheng Liu
Keyword(s):  
Adaptive Control ◽  
Case Studies ◽  
Control Point ◽  
Point Of View ◽  
Air Conditioner ◽  
Air Conditioners ◽  
Human Needs ◽  
Systems And Control ◽  
Machine Communication ◽  
And Control

Human factors in the control and programming of robots and electric appliances are addressed in this paper. Systems and control techniques for the enhancement of human-machine communication as well as learning and adaptation to human needs are described with exemplary case studies. First, fundamental issues and methodologies, as well as historical perspective of relevant fields, are summarized, and two case studies are then discussed. One is user-adaptable control of air conditioners, a new type of adaptive control that allows an air conditioner to learn the thermal preference of the user. The other is a user-friendly programming method for advanced robot control. A task-level adaptive control system is developed by acquiring control skills by direct communication with human experts. The importance of human-machine communication and its impact on product development are addressed from the systems and control point of view.

scholarly journals The use of video camera to create metric 3D model of engineering objects

2020 ◽  
Vol 19 ◽  
pp. 59-71
Author(s):  
Nicholas Batakanwa ◽  
Tomasz Lipecki
Keyword(s):  
3D Model ◽  
Profile Analysis ◽  
Average Distance ◽  
Laser Scanner ◽  
Field Research ◽  
3D Models ◽  
Video Camera ◽  
3D Modelling ◽  
Speed Up

The article presents the possibilities of using a video camera to create a 3D metric model of engineering objects using Agisoft and CloudCompare software. Traditional photogrammetry technique does not always match up with production urgency needed by the market. Complexity is seen when used in huge objects leading to rise of cost, time and tediousness of the work. The use of Video Camera technique here termed as videogrammetry technique is comparable to taking pictures, however, it allows to speed up the process of obtaining data, which in many cases is a key element in anyb any project or research. The analysis of the quality of 3D modelling of the three filmed objects was performed, which allowed the authors to refine the procedure for acquiring images for spatial analyses. The applied technique of “videogrammetry” is comparable to taking pictures, but allows the data acquisition process to speed up, which in many cases is a key element in field research. 3D objects videos from no-metric camera were processed by Agisoft Metashape. To be able to assess the accuracy of the videogrammetry data, a well-established Laser scanner technique’s data was used for comparison. The laser scanner data were pre-processed in Autodesk Recap. Manual registration was performed utilizing 14 points from the three scans. The two 3D models were exported to CloudCompare software for comparison and further analysis. An analysis of the quality of 3D modelling of the three objects filmed was performed, which allowed refining the procedure for obtaining images for spatial analysis. The article presents the possibilities of using a non-metric mobile phone video camera “videogrammetry” to create a metric 3D model of engineering objects using Agisoft and CloudCompare software. In CloudCompare a registration, cloud to cloud (C2C) and profile to profile analysis was performed to determine the uncertainty of the 3D model produced from videogrammetry data determined as distance of separation between the two models. Results show average distance of separation between laser scanner and videogrammetry derived 3D model point cloud to be 34cm, the average profile separation was 25 cm in XY plane and 1.9 cm in Z-plane. Using Cloud to Cloud PCV the average difference of 84 cm was determined.

scholarly journals Conceptual Provisions on the Directions of Cost Optimization of Energy Industry Enterprises

2021 ◽  
pp. 253-261
Author(s):  
R. Reznikov ◽  
Keyword(s):  
Cost Optimization ◽  
Point Of View ◽  
Energy Industry ◽  
Economic Point ◽  
Full Analysis ◽  
The Cost ◽  
Energy Companies ◽  
And Control ◽  
Financial Balance

Conceptual provisions on the directions of cost optimization of energy industry enterprises on the basis of system, information and project approaches are proposed, which provide for the implementation of procedures for diagnosis and optimization of suboptimal costs and control of the implementation of relevant projects. Diagnosis of suboptimal costs of energy companies is proposed to be carried out using a comprehensive approach to the diagnosis of suboptimal costs based on a combination of information-logical, descriptive-analytical and economic-mathematical models of enterprise analysis, as well as full analysis (vertical and horizontal) of financial statements including P&L, analysis of Cash Flow and financial balance of the enterprise. Applying the appropriate approach allows you to identify the costs that the company can optimize without affecting the quality of electricity and without violating other aspects of the company, which frees up the company to upgrade equipment, additional logistics, reduce electricity costs and implement other projects in within the portfolio. To optimize the costs of energy companies, an appropriate project-oriented approach is proposed, which is based on the use of the method of forming a portfolio of optimization projects using a combination of WSJF model and 6 sigma matrix. The uniqueness of the approach lies in the synergy of the proposed tools and methods and their implementation for energy companies. The proposed approach allows to form a portfolio of interconnected projects, which allows to achieve better financial results through synergies between projects and saves energy companies through more efficient use of its financial resources. Implementation of conceptual provisions on the areas of cost optimization of energy companies allows to reduce the cost of electricity, losses of enterprises and increase their profitability by reinvesting savings in cost optimization projects. Optimization is achieved by diagnosing those costs that can be reduced without affecting quality and in which it makes sense to invest from an economic point of view.

Study the precision of creating 3D structure modeling form terrestrial laser scanner observations

2018 ◽  
Vol 12 (4) ◽  
pp. 303-309
Author(s):  
Zaki M. Zeidan ◽  
Ashraf A. Beshr ◽  
Ashraf G. Shehata
Keyword(s):  
Structural Model ◽  
3D Structure ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Field Tests ◽  
3D Models ◽  
Terrestrial Laser Scanner ◽  
Analysis Of Results ◽  
3D Structure Modeling

Abstract Laser scanner has become widely used nowadays for several applications in civil engineering. An advantage of laser scanner as compared to other geodetic instruments is its capability of collecting hundreds or even thousands of point per second. Terrestrial laser scanner allows acquiring easy and fast complex geometric data from building, machines, objects, etc. Several experimental and field tests are required to investigate the quality and accuracy of scanner points cloud and the 3D geometric models derived from laser scanner. So this paper investigates the precision of creation three dimensional structural model resulted from terrestrial laser scanner observations. The paper also presented the ability to create 3D model by structural faces depending on the plane equation for each face resulted from coordinates of several observed points cover this face using reflector less total station observations. Precision comparison for the quality of 3D models created from laser scanner observations and structure faces is also presented.The results of the practical measurements, calculations and analysis of results are presented.

scholarly journals PRELIMINARY EVALUATION OF A COMMERCIAL 360 MULTI-CAMERA RIG FOR PHOTOGRAMMETRIC PURPOSES

2018 ◽  
Vol XLII-2 ◽  
pp. 1113-1120 ◽  
Author(s):  
L. Teppati Losè ◽  
F. Chiabrando ◽  
A. Spanò
Keyword(s):  
Point Of View ◽  
Preliminary Evaluation ◽  
Theoretical Point ◽  
Control Points ◽  
Spherical Image ◽  
Spherical Images ◽  
And Control ◽  
Orientation Parameters ◽  
Spherical Panorama

The research presented in this paper is focused on a preliminary evaluation of a 360 multi-camera rig: the possibilities to use the images acquired by the system in a photogrammetric workflow and for the creation of spherical images are investigated and different tests and analyses are reported. Particular attention is dedicated to different operative approaches for the estimation of the interior orientation parameters of the cameras, both from an operative and theoretical point of view. The consistency of the six cameras that compose the 360 system was in depth analysed adopting a self-calibration approach in a commercial photogrammetric software solution. A 3D calibration field was projected and created, and several topographic measurements were performed in order to have a set of control points to enhance and control the photogrammetric process. The influence of the interior parameters of the six cameras were analyse both in the different phases of the photogrammetric workflow (reprojection errors on the single tie point, dense cloud generation, geometrical description of the surveyed object, etc.), both in the stitching of the different images into a single spherical panorama (some consideration on the influence of the camera parameters on the overall quality of the spherical image are reported also in these section).

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