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12 Jan 2023

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PRESS RELEASE — GEXCEL HERON 3D Mobile Mapping: Improvements in Accuracy and Usability

 Gexcel HERON software improvements


Brescia, Italy, January 12th, 2023

The recently released versions of HERON processing software(s) make HERON 3D mapping projects more accurate, effective and usable thanks to important improvements in the usage of ground control points, in the change detection workflow, and for the cloud-sharing process.
 

CONSTRAINT TOOL












Several ways to constrain and geo-reference HERON trajectories.
Ground Control Points (GCPs)
- Measuring GCPs directly in the field by using HERON and a calibrated pole or
- Identifying CGPs on the HERON point cloud.
GCPs local coordinates are automatically paired with the related global coordinates.
Point Clouds and Scans
Static scans or portions of 3D point clouds previously acquired also with different sensors (UAV, mobile scanners, mapping systems, photogrammetry) can be used as constraints as well.

Constraint procedures play a crucial role to improve the quality of the final trajectory!

CHANGE DETECTION MAPS

HERON - Change Detection Map








1. Use a point cloud or BIM model as a reference map.
2. Let HERON self-locate with respect to the reference.
3. Produce a survey aligned with the reference map.
4. Detect changes that occurred in the time.
5. Automatically get the change detection map for further editing.

CLOUD SHARING

Mobile mapping is dramatically speeding up the process of capturing 3D and image data. This should be matched by the speed of project delivery and online procedures.











To increase Site to Sight of data efficiency, GEXCEL customers can now link up with 3DUserNet to get a special free annual subscription to the VISION platform with a direct workflow from Reconstructor to 3DUserNetVISION. This will enable users to deliver more efficiently for their customers – with the opportunity to upgrade to a full subscription at a substantial discount at any time.

For additional information: sales@gexcel.it

 

11 Jan 2023

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CHANGELOG - Reconstructor 4.4

 

Reconstructor 4.4 is out now!

The full changelog is the following:


Added
  • added the "Project data purge" command to remove unused data inside the project folder.
  • added option to remove only groups or groups and contained items when deleting groups from the project view
  • added the option to create UCS from two points and a fixed vertical in the UCS creator window.
  • when exporting models in native formats, added the option to export them in current UCS coordinates. 
  • added the command compute 3D reflectance color layer in the Cloud coloring toolbox and Photo & Color contextual menu. 
  • added a button for computing the histogram in the Inspection dialogue. 
  • added importing annotations from a CSV file with the fields: annotation name; X,Y,Z; comment; hyperlink.
  • added functions to remove big triangles and trim mesh borders in the mesh editor.
  • added support for different rotation ordering conventions in the Euler angles dialogue.
  • added a generic export command for 3DUserNetVISION to export either point clouds (LAS format) or meshes (OBJ format).
  • [HERON add-on] added a tool in the HERON Survey Editor to convert the currently selected frame of a streaming camera to a standalone single-shot camera
  • [HERON add-on] added hide-back facing points option to 3D panorama exporter. 


Changed
  • restored export E57 data in column-major order, since it is the most commonly used memory layout.
  • changed the way in which spherical and cylindrical cameras are drawn in 3D scenes, making the consistent with orthographic and perspective cameras.
  • changed the "UCS coordinates" option behaviour in the adjust pose window so that applying a rotation to the selected item will rotate it around UCS centre coordinates.
  •  improved the responsiveness of the Quick Profile and Tunnel Survey tools when loading existing surveys associated with several models.
  • upgraded the LAS exporter using the latest format version 1.4.
  •  improved the appearance of the point list import dialogue, making it more obvious that the preview is limited to five lines.
  • improved the layout of the camera calibration dialogue to better adapt to screens of different sizes.
  • updated 3D mesh algorithm: mesh generation is now faster and does not require the writing of temporary data to disk.
  • updated Chinese language translation.
  •  improved the Point List Row Format dialogue supporting also the simplest case of text files containing the fields: x,y,z.
  •  improved update 3D scene and the point cloud color list when computing a new color layer from the color map commands.
  • moved "Color with Ambient light", "Add color layer from image" and "Merge and split color layer" commands from the Color Mapping dialogue to the Cloud Coloring toolbox and Photo & Color contextual menu.
  • improved the project item drag and drop functionality, providing better visual feedback on whether an item can be dropped into a particular group within the project.
  • reduced approximation error when computing volume from the plane of a mesh delimited with a polyline.
  •  [HERON add-on] overhauled the Prepare reference map tool with improved user experience and new functionalities to automatically annotate trajectory points when generating from a HERON point cloud.
  • [HERON add-on] reduced the minimum voxel size when importing HERON data to 1mm.
  •  [HERON add-on] updated instruction texts to 3DUserNetVISION and OrbitGT exporters.
  •  [HERON add-on] exported the current rendered point cloud's color layer in HERON third-party exporters.
  •  [HERON add-on] split statistical outliers (SOR), outliers and hide black points steps from sensor noise attenuation filter, in HERON data enhancements import.


Fixed
  • fixed application crash when importing IFC files.
  • fixed the update issue that was rendering geometric shapes with wrong parameters.
  • fixed the cross-sections' computation with geo-referenced data.
  • fixed a failure to import data from another Reconstructor project containing HERON surveys
  • fixed the number of returns detection for LAS data.
  • fixed the fine registration PDF reports not opened.
  • fixed export invalid and noisy coordinates in LAZ export.
  • fixed export truncated coordinates value to textual formats.
  • fixed a bug that prevents computing the area of the mesh.
  • fixed a crash while changing the number of bins in the inspection recipe window. 
  • fixed crash when reading corrupted data from disk.
  • fixed 2D view was not hiding deleted points.
  • fixed crash when importing PTG files with no color data.
  • fixed broken texture mapping functionality.
  • fixed occasional crashes and glitches when loading two models side by side in manual registration.
  • fixed an unintended reset button click by hitting the Enter key in Color Mapping dialogue.
  • fixed the Color Mapping dialogue's excessive size when the min and max labels have many number digits.
  • fixed crash in Color Mapping dialogue computing the histogram using less than three bins.
  • fixed crash while computing the color layer's minimum and maximum values.
  • fixed computation of minimum and maximum values skipping the not-a-number values.
  • fixed a crash due to an invalid histogram in Color Mapping dialogue.
  • fixed a crash caused by a division by zero when painting the histogram in Color Mapping and Inspection dialogues.
  • fixed the Quick Profile tool showing a checkmark even if no profile plane was selected in some rare cases.
  • fixed a bug in the out-of-range field of the PDF report of the inspection.
  • fixed compatibility with systems that use a non-English locale or that have a customized decimal or thousands separator in the Windows regional settings.
  • fixed some issues when using non-metric units of measurement.
  • fixed the formatting of several warning messages that had lost their yellow background.
  • fixed a crash with AMD Radeon GPUs when EDL is enabled in the light settings.
  • [HERON add-on] fixed a failure to import data from another Reconstructor project containing HERON surveys.
  • [HERON add-on] fixed number of returns detection for LAS data.
  • [HERON add-on] fixed the rendering of the Recompute Origin preview from the Send to HERON Desktop tool when the cloud's orientation doesn't match the UCS.
  • [HERON add-on] fixed the rendering of HERON Surveys and their blueprint layers.
  • [HERON add-on] fixed a crash when using certain commands with a heterogeneous multi-selection of items.
  • [HERON add-on] fixed a crash when models with targets are children of another model.
  • [HERON add-on] fixed a crash when creating a reference map from a cloud that doesn't contain a Reflectance layer.
  • [HERON add-on] fixed a crash when importing HERON data from a project where some resources were deleted.
  • [HERON add-on] fixed an issue that made the sub-items of a HERON Survey draggable out of it, resulting in a corrupted project.
  • [HERON add-on] fixed a crash when using point classification functions in projects created through HERON Desktop.
  • [HERON add-on] fixed the formatting of several warning messages that had lost their yellow background.
  • [HERON add-on] fixed an error when computing the spherical coordinates of the HERON 3D panoramas in E57 format.
  • [HERON add-on] fixed a bug that prevents the export of 3D Panoramas when selecting single-shot and streaming cameras.
  • [HERON add-on] fixed a crash if the HERON project file doesn't contain the required metadata for trajectory items.

Removed

  • removed E57 format selection prompt: cloud structure is now automatically detected.
  • removed 3bc auxiliary data from point clouds. Color mapping is now computed on the fly using GPU.


27 May 2021

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HERON SUCCESS CASE — VOLUMES OF SCRAP METAL STOCKPILES

THE PRODUCTION PROCESS OPTIMIZATION IN A STEEL PLANT 

Feralpi Group – Lonato, Brescia (IT)

PDF versione italiana

PROJECT DESCRIPTION

KEYWORDS: Steel plants | Volumes computation | Stockpiles | Heron | 3D Mapping


HERON portable mobile mapping - stockpile volume computation - Feralpi Group

HERON MS TWIN-metal stockpile 3D mapping


Feralpi has set itself the goal of introducing advanced systems to monitor and verify the flows of raw materials and by-products of the steel mill, in order to optimize its production process.
Feralpi has chosen HERON technology because it fits their different needs. On one hand, the need to periodically obtain the volumes of the scrap stockpiles stored on a large area of the plant; on the other hand, the need for a high speed of scanning and results delivery, ensuring the required accuracy.
The project involves a monthly survey of the material stockpiles with HERON portable laser scanner technology.
During the 3D modelling phase, the stockpiles are isolated from the structural elements of the plant to define their volume.
The day after the measurement, a technical report with the measurements of the overall volumes is provided to Feralpi.
Thanks to this technological improvement, Feralpi is experimenting with a more efficient approach to the management of raw materials at low costs.


NEEDS AND GOALS
  • To monitor and verify the flows of raw materials and by-products of steelworks by using advanced systems.
  • To optimize the production process.


« Thanks to HERON technology we are able to map our material parks in a short time and with high precision. »


Gianpaolo Foglio |  
Head of Steelworks at Feralpi Siderurgica S.p.A.



HERON-Reconstructor scrap metal stockpile volume computation - Feralpi Group



HERON MAIN BENEFITS

  • Fast and simple mapping procedures easy to reproduce
  • Fast mapping of large stockpiles
  • No impact on daily production activities
  • Fast volumes computation
  • Centimetre level accuracy
  • Costs reduction
  • Production efficiency improvement
  • Usable for mapping different type of sites (steel plants as well as buildings)

              RESULTS

              • Stockpiles 3D modelling
              • Volumes computation

              TECHNICAL DETAILS

              • SURVEYING SYSTEM: HERON portable mapping system
              • SURVEYING TIME: about 1 h for 18.300 m2
              • PROCESSING SOFTWARE: HERON Desktop - Reconstructor
              • DATA PROCESSING TIME: half working day



              To carry out the work, Feralpi Group makes use of the HERON rental service with the operator, data processing and delivery of results.



              ABOUT

              The Feralpi Group is one of Europe's leading steel manufacturers. It offers innovative and sustainable answers to the steel supply chains thanks to a diversified and vertical business.

              12 Oct 2020

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              PRESS RELEASE — Gexcel presents HERON® MS Twin

              Brescia, Italy, October 7th, 2020_Gexcel is glad to present the new HERON® MS Twin: a double Lidar sensor portable mobile mapping system, equipped with a 5k RGB panoramic camera. Thanks to its advanced hardware+software technology, the users can benefit from a very high-level performance in terms of geometric robustness of 3D models.



              Key points of usability:

              • Compact capture head easily mountable on a backpack or various supports like cars, bikes, quads, etc.
              • Light rugged backpack usable both for transportation and surveying.
              • Automatic and on-demand RGB data acquisition.
              • Loop closure and initialization procedure not required.
              • Automatic self-localization on a reference model, when available.
              • Annotation collection during the walk.
              • Usable in every light conditions.
              • Hands-free surveying.
              • Real-time display of panorama images, 3D point cloud, and trajectory on the rugged Control Unit.

              Key points of data processing:

              • SLAM post-processing software (HERON® Desktop) included. The automatic advanced processing tools can be also personally set up by the user.
              • New trajectory quality assessment which improves the SLAM drift effects reduction (patented algorithm).
              • Innovative very dense point cloud rendering with multiple colour layers.

              HERON MS Twin color layer

              • Static scans usable as trajectory constraints (patented algorithm).
              • Innovative panorama tool to directly export images and 3D data in ReCap® (with Realview® display) and in E57 to easily go to OrbitGT, Edgewise®, FARO® Scene and Scene Webshare Cloud.
              • New “splat rendering” and “eye dome lighting" rendering effect. Features and details are emphasized and well visible.
              • GoBlueprint free tool to share the survey results with final clients or colleagues included.

              HERON GoBlueprint

              • Advanced 3D point cloud data analysis software included (Recontructor®).
              • Dedicated tools to navigate 3D models.
              • Real-time change detection.

              Thanks to these advanced features, HERON® MS Twin is the perfect system for surveyors who works indoors, outdoors, in underground mines, multi-level buildings, tunnels, cultural heritage sites, forensic procedures, forests, urban areas, harsh and complex areas.

              HERON® MS Twin can make the user able to obtain several outputs from collected data: volume computation, excavation progress monitoring, digital archive, construction progress monitoring, floor plans generation for asset management, logistic/traffic management, dilapidation monitoring, scan to BIM, contours and profiles, 3D virtual experience, real-time change detection, as-built generation, security and safety, and much more.

              * * *

              New HERON MS Twin Live Demo

              - watch the webinar recording -

              new HERON MS Twin - Webinar
              New HERON MS Twin Live demo - Recording

              10 Mar 2020

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              PRESS RELEASE — Gexcel announces RECONSTRUCTOR® 4.2

              Brescia, Italy, February 27th, 2020_Gexcel is glad to announce the new release of Reconstructor® that introduces some very interesting improvements for mining, tunnelling, construction, and infrastructure applications thanks to new strategic workflows designed to easily guide customers to final deliverables from the surveying data.



              Reconstructor® 4.2 makes a step forward into the processing of large datasets from various 3D sensors and in particular from Mobile Mapping Systems. Reconstructor® 4.2 increases the capability to manage data from tunnels, underground and open-pit mines 3D surveys, thanks to new and improved tools that help users get the result done by a smart process.

              Following, a selection of some new key functions introduced in Reconstructor® 4.2:
              • Tunnels, underground and open-pit mines: easy extraction of sequential cross-sections along tunnels axis; measurement of areas and volumes along tunnels; creation of DEM (digital elevation models) starting from 3D point clouds; straight workflow to extract isolines and contours from open-pit mine models and DEMs.
              • Terrain models, buildings and infrastructures: orthophotos can now be used to quickly and efficiently create facades' depth maps. This function can be used also by final clients thanks to the new GoBlueprint free tool. Also, the procedure to extract, display, measure, and move to CAD profiles and cross-sections is now faster and more efficient.
              • Vegetation: colour mapping for point clouds classification and to support the vegetation removal process.
              For additional information and demo, click here

              5 Jul 2019

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              EVENT — HERON technology for Museum documentation and Tourism activities

              23th July 2019, Italy — Presentazione del lavoro di rilevamento dell'area espositiva Museo Ridola.


              HERON Ridola Museum documentation

              Si rinnovano i successi e la scelta della tecnologia HERON per lo sviluppo di attività Turistiche e Museali. Questa volta l'interesse arriva da parte del Ministero dei Beni e delle Attività Culturali (MIBAC) e dal polo Museale della Basilicata per progetti dedicati allo sviluppo del territorio. 

              Il 23 Luglio 2019 nella storica Sala conferenze del Museo Archologico Nazionale "D.Ridola" Gexcel presenterà il progetto di rilevamento 3D eseguito nel Luglio 2018, dell'intera area espositiva del museo Ridola mediante l'uso di HERON iMMS (Indoor mobile mapping system).

              La conferenza è aperta al pubblico ed aprirà le porte alla X International Summer School, organizzata dal Comitato Internazionale Fotogrammetria Architettonica - COIFA e dal Prof. Pietro Grimaldi.

              Per maggiori informazioni riguardo all'utilizzo di HERON o per partecipare alla conferenza: marketing@gexcel.it

              8 Apr 2019

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              EVOCATION European project: Fellows recruitment




              evocation european project



              Formare la prossima generazione di innovatori, creativi ed imprenditori del 3D, per affrontare le sfide attuali future nei campi dell'acquisizione di geometrie scalabili e ad alta fedeltà, estrazione di strutture semantiche, elaborazione, visualizzazione e fabbricazione 3D per applicazioni professionali e di consumo. 

              Questi sono gli obbiettivi del progetto europeo "EVOCATION-Advanced Visual and Geometric Computing for 3D Capture, Display, and Fabrication" che vede Gexcel partner insieme a enti di ricerca e Università che rappresentano l’eccellenza europea nella gestione di dati tridimensionali. Finanziato dalla Commissione Europea (call Horizon 2020 sulle reti di formazione europee Marie SkÅ‚odowska-Curie), vede la partecipazione oltre che di Gexcel dell'Università di Rostock, che coordinerà il progetto dal CNR-ISTI di Pisa, dal Fraunhofer-Institut für Graphische Datenverarbeitung IGD di Darmstadt, dall’Università di Zurigo, dall’Università Tecnica di Vienna, dal Dipartimento CRS4 di Sardegna Ricerche e dall’azienda ungherese Holografika. 

              Il progetto, iniziato il 1 ottobre 2018 per la durata di 48 mesi, creerà un collegio di dottorato di primo piano a livello europeo. I dottorandi saranno associati ai partner del progetto e da una lunga lista di istituti che si sono resi disponibili ad ospitare per definiti periodi di tempo i dottorandi stessi. Tra questi enti e aziende sono presenti il Museo Archeologico di Cagliari, le Università di Cagliari e Pisa e l'impresa NVIDIA. 

              Il ruolo di Gexcel nel progetto è di affiancare e formare il candidato nel programma di dottorato di ricerca di 36 mesi coordinato tra otto partner accademici e industriali, nello specifico il candidato sarà coinvolto nello studio e nello sviluppo di una pipeline di acquisizione e ricostruzione (strumenti di mappatura mobile e software di elaborazione), focalizzata sulla ricostruzione di geometrie interne 3D e per estrarre informazioni funzionali dalla realtà acquisita. Il progetto EVOCATION si inserisce nelle attività di un gruppo che è stato finora partner maggiore in 14 progetti UE e 4 USA nel periodo 1996-2018. 

              Il reclutamento per i ESR borsisti è iniziato. 

              Visita la pagina EVOCATION Recruitment per maggiori informazioni sulle pozizioni aperte. 


              --------------


              Gexcel is the technical partner and contributor of the European project "EVOCATION-Advanced Visual and Geometric Computing for 3D Capture, Display, and Fabrication" financed by the European Union’s (EU) Horizon 2020 research and innovation program under Marie SkÅ‚odowska-Curie. The Rostock University (Germany) coordinates the project supported by public and private bodies including CNR-ISTI, Fraunhofer, Zurich University, Vienna Technical University, CRS4 and Holografika. Third parties collaborations face the Archeological Museum of Cagliari, Cagliari University, Pisa University and NVIDIA enterprise.


              The EVOCATION network of public and private entities is naturally multidisciplinary and multi-institutional will train the next generation of creative, entrepreneurial and innovative experts who will be equipped with the necessary skills and competencies to face current and future major challenges in scalable and high-fidelity shape and appearance acquisition, extraction of structure and semantic information, processing, visualization, 3D display and 3D fabrication in professional and consumer applications.The project has started on October 1, 2018, will continue for 48 months, to create a European foreground fellows collegium.


              The Gexcel role is to support and train the candidate in the 36 months research doctorate program. The candidate will be involved in studying and developing an acquisition and reconstruction pipeline (mobile mapping instruments and processing software), focused on reconstruct 3D indoor geometries and to extract functional information from captured reality. The ESR initially will carry out the research of reconstruction on different inputs separately (3D data and image), then will explore data fusion techniques to improve structure recovery.


              Recruitment for 14 ESR fellowships has started.

              Visit the EVOCATION Recruitment Page for more information about available jobs.
              Learn more about the EVOCATION project

              11 Dec 2018

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              PRESS RELEASE — Gexcel presents the new HERON® Indoor Mobile Mapping System

              11th December 2018, Italy — Thanks to the new full HD 360° panoramic camera, HERON® has become a powerful tool for geospatial data mining: to digitally document, collect and geo-reference large dataset and information inside indoor environments has never been so easy, thanks to the perfect integration with OrbitGT packages too.

              Gexcel - New HERON Indoor Mobile Mapping System


              Gexcel is glad to introduce the market to the innovative benefits provided by the new HERON® family:
              • Thanks to the new high-res 360° panoramic camera, HERON® has become the best choice for facility management, geospatial applications, digital 3D documentation, digital twins for remote planning and project, revamping projects of industrial plants, etc.
              • With the GoBlueprint® free tool (fast point clouds 2D visualization), HERON® users can easily share with clients, already in the field and almost in real-time, the results of the HERON® fast 3D mapping.
              • Now, point clouds coming from drones and/or static scans, as GNSS known points, can become constraints information inside the workflow of the HERON® 3D SLAM data processing.

              Gexcel - GoBlueprint free tool


              The HERON® family is currently composed of HERON® AC-2 and HERON® MS-2 (rugged device for underground mines or difficult environments), both available in the Color configuration. The HERON® LITE model is the best solution for customers who want to join the HERON® family with an affordable investment.


              9 Jul 2018

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              HERON SUCCESS CASE — UNDERGROUND MINING

              3D SCANNING OF AN OLD MINE Zhejiang Province (China)


              PROJECT DESCRIPTION

              KEYWORDS: Mining | Underground | HERON | 3D Mapping

              The surveying of an underground mine is difficult for two orders of problems: the complicated and dark tunnels environment and the underground depth where GPS or GNSS signal can't be reached.
              The Aurantech company has faced this problem in an old underground mine site, in Zhejiang and thanks to the HERON wearable mobile mapping system the procedure for data collection was not only possible but also efficient.
              After pre-processed the surveying acquisitions and filtered the noise, it has been possible to build the surface model of the tunnel, based on the required parameters, with a global accuracy of 10 cm.
              The data extraction has been made with JRC 3D Reconstructor software. First of all, the data have been aligned via the automatic registration and bundle adjustment software's functions. Then, the cross-sections have been easily generated and volume and surface areas computed on the 3D model. Finally, the 3D model was easily exported to third-party applications using one of the most common data interchange formats.


              Aurantech - The operator with HERON AC-1 during the surveying activities in the underground mine and HERON point cloud model with the path
              Fig 1. The operator with HERON AC-1 during the surveying activities in the underground mine
              Fig 2. HERON point cloud model of the underground mine with the path
              Aurantech - HERON 3D mesh model of the underground mine
              Fig 3. HERON 3D mesh model


              « What we had to do was just to set up some control points using a total station and then simply walk with HERON. Software and hardware made the work easier and supplied us with a complete solution. HERON is a reliable, simple and high-performance 3D solution »
              Sherry Wang
              AURANTECH | Commercial Manager


              NEEDS AND GOALS

              • Generate a precise map of an old tunnel where tripod laser scanners or GPS cannot be used.
              • Build a measurable 3D model of the underground mine starting from the 3D point cloud.


              RESULTS

              • 3D point cloud model
              • Depth calculation
              • Area calculation
              • Cross-sections
              • Volume calculation


                Aurantech - CAD environment: cross sections of the HERON point cloud model of the underground mine
                Fig 4. CAD environment: cross-sections of the HERON point cloud model


                HERON AC-1 MAIN BENEFITS

                • Work without GPS or GNSS sensors
                • The precision of final results
                • Management of wide and different data


                TECHNICAL DETAILS

                • SURVEYING SYSTEM: HERON AC-1 and total station
                • SURVEYING AREA: 250,000 sqm abandoned mine
                • SURVEYING TIME: 6 hours
                • PROCESSING SOFTWARE: HERON Desktop and JRC 3D Reconstructor
                • PROCESSING TIME: 18 hours



                ABOUT

                Aurantech | www.aurantech.com
                Aurantech is a high-tech company situated in Shangai (China) featured to provide complete 3D solutions; highly experienced in 3D project services from 3D data collection, 3D data processing to the 3D information management system for final customers.



                17 May 2018

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                EVENT — Gexcel and HERON at GEO Business Show 2018

                HERON® AC-1, the innovative Wearable Mobile Mapping System from Gexcel, is having a significant success worldwide on innovative BIM-check projects. Several customers are using the HERON® change detection feature to highlight differences between the reality and the BIM model: everything in real time.

                Real-time and effective scan to BIM quality check services on huge sites, such as airports, industrial plants, and construction yards are now possible!


                HERON® can survey complex environments without any external positioning system and is capable to highlight in real-time possible geometrical changes between different surveying sessions. Moreover, HERON® works as a localization system using either a former survey or a CAD model as reference frame.

                Thanks to these unique features, HERON® has been adopted by international institutions and large companies involved in the nuclear power plant and advanced industrial projects.


                >> Visit Us on Stand L15 at GEO Business (22-23 May, London) <<