VENETOREGION ROAD NETWORK ROAD MAPPING LASER SCANNING FACILITY MANAGEMENT

Transcription

1 VENETOREGION ROAD NETWORK ROAD MAPPING LASER SCANNING FACILITY MANAGEMENT ing. Augusto Burchi Siteco profile Italian software house specialized in GIS and RDBMS dedicated to Road networks mapping and asset management; Products based on standard platforms (Oracle, ArcGIS, Autodesk, Geomedia). Competence in spatial database technology (Oracle, ESRI) The Road Asset Management System supports all the activities connected to the road network (Signs, pavement and bridges maintenance, authorizations, etc.) Starting from 2005 Siteco has developed its own MMS Road Scanner The three Road Scanner vehicles have been user to survey Km. of roads SITECO Bulgary subsidiary in Sophia: 20 people team for post processing and data entry Experience and Innovation In 2005 SITECO begun developing its own MMS technology The joins the most advanced MMS technology (position and image acquisition), with the innovating integration of thehelicoidal helicoidal FARO PHOTON laser scanner Starting from 2006, SITECO undertook a lot of surveys for Public Administration, by contract with Treasure Ministry. Among them: Regions: Veneto, Piedmont, Tuscany, Marche, Emilia Provinces: Milan, Pavia, Reggio, Parma, Savona, Imperia, La Spezia, Ravenna Municipalities: Forlì, Pesaro, Cervia, Faenza, Grosseto, Livorno The Road Scanner vehicles have been user to survey Km. of roads Road Scanner Road Scanner Components IXSEA LANDINS positioning system High resolution cameras Faro PHOTON Laser scanner Dynatest RSP IV profilometer IDS Georadar Acquisition system Post processing applications Photogrammetry and data entry applications 1

2 IXSEA LANDINS high performance positioning system IXSEA Popins Kalman filter GPS receiver, FOG IMU and DMI (odometer) The fiber optic gyro allows centimetric accuracy position even after long GPS outages. 0,01 or better heading, roll, pitch at update rate Precise timing and 1,000 Hz event markers The high frequency 1000 Hz input events allows to syncronyze all the sensors FARO PHOTON helicoidal scanning Dynatest RSPIV Profilometre Mirror creates vertical Scan Lines Mounting the LS on a moving vehicle creates a helical pointcloud. No horizontal rotation THE PHOTON CAN BE USED IN TRADITIONAL STATIC AND STOP AND GO MODE, AND CAN BE MOUNTED HEAD UP FOR TUNNEL TOP SURVEYING Dinamic survey of roughness IRI (International Roughness Index) IDS Georadar Accuracy and specs The 2 Ghz IDS Georadar system located at cm. from the pavement, allows to analyze the asphalt and pavement layers. The Post processing software includes funtions for: Evaluation of base and sub base status; Verification of new asphalt wearing course, base and sub. base; Course Identification of deeper layers; Reduction of severe hazard points of runways. Position IXSEA LANDINS < 20 cm. during 90% of survey Frequency of position acquisition = 1000 Hz Relative accuracy of stereo photogrammetry: <10 cm. Faro PHOTON Laser scanner : rotations per second (20 50 cm. distance between 2 scan lines, depending on vehicle speed) Vertical field of view: 320 Number of point per cross section: Distance between points on the pavement 5 6 mm. Relative accuracy of single points : 3 mm. Accuracy of distance between 2 points: < 1 cm. 2

3 Productivity Up to 50 Km per day in urban context Up to 100 Km per day in extra urban 1 day post processing every 5 days campaign for georeferenced images and point clouds 0,5 to 2 hours data entry per Km to carry out a full GIS database Veneto Regional Network Km of roads from Venice to the Dolomites alpes MMS survey Asset Management database and Information System Geographical I.S. Job accounting Maintenance Project Management 3 month survey campaign (1900 Km in 60 working days) schedule: JUNE: Garda lake and Adriatic coast JULY: Dolomite Alps Area AUGUST: Padua Plain, heavy traffic Area 6 month post processing and data entry design: Organization Analysis Architecture project Oralcel Spatial RDDMS structure definition Installation and training System Architecture File System Geomedia Prof. Oracle Spatial Abaco DBMap Geographical DB Asset DB Maintenance DB All information in a single structured Oracle Spatial database 3

4 User profiles and applications Web based Information System GIS, data and Imagery navigation Asset Management Road Sign Management Easy navigation tree to consult roads and asset categories 4

5 Full survey of the Infrastructure components routes pavements vertical signs traffic markings (automatically detected by the reflectance) sidewalks slopes retaining walls, shoulders tunnels bridges guard rails building façades Road Asset Management Detailed road scanner survey Accesses Posters and signs Service areas Bridges Milestones Protection barriers Post processing software Georeferenced imagery Point clouds overlap on imagery Stereoscopic fotogrammetry Measurements obtained snapping on laser points Cross section of the infrastructure Export point clouds and crosssections in CAD format Geodatabase of all road information TRANSVERSAL PROFILES AND MEASUREMENTS PERPENDICULAR TO THE ROAD!!! Road Scanner 5

6 Georeferenced point clouds Faro Scene Application Link to Google Earth Kml GoogleSR203_146.kml Automatic detection of markings and pavement width The detection of markings is obtained from the reflectance gradient between asphalt and white lines The carriageway width detection is more complex, due to continuity between pavement and natural ground The real surface of pavement is a key issue to evaluate the infrastructure asset (an error of 10 cm. on a 10 km. road gives a wrong estimate of 1000 sqm.) 6

7 Automatic detection of markings and pavement width 1) Scan lines are georeferenced 2) Detection of pavement borders and markings 3) Rendering GIS rendering GIS rendering All the markings and the carriageway borders are rendered in the GIS The interactive refinement allows to improve and insert the result in the asset database A very precise estimate can be obtained in a reasonably productive way ARRIVEDERCI THANK YOU 7