Within research co-ordinated by Prof. Giorgio Manzoni of Trieste University and turned to identif... more Within research co-ordinated by Prof. Giorgio Manzoni of Trieste University and turned to identify and test methods and procedures for road survey using a special ve- hicle with GPS/INS equipment, routes plotting on digital maps is considered. About this aspect, taking into account that this mobile can operate not only in Italy, but also in other countries of CEI, problem of datum transformation from WGS84 to other related to specificity of the territory is analyzed. In this paper, after a brief resume of the main characteristics of the official cartography of different countries (type of representation and reference ellipsoid), operations for Helmert and Molodensky transformations are illustrated; then applications on transformations from WGS84 to Italian UTM (ED50) and to Italian Gauss-Boaga (Roma 40) are presented in reference to a Sicilian road survey around Etna volcano.
XII CONGRESO MUNDIAL IRF, MADRID 1993. TOMO 4, May 1, 1993
El articulo forma parte de un amplio programa de investigacion cuyo objeto es realizar un estudio... more El articulo forma parte de un amplio programa de investigacion cuyo objeto es realizar un estudio a fondo de la transmision de cargas en firmes de hormigon armado con juntas (JRCP). Las fases preliminares de la investigacion, realizadas con ensayos experimentales sobre modelos, pusieron de manifiesto algunos aspectos claves del fenomeno. Los ensayos indicaron la necesidad de ampliar el estudio para definir en detalle los aspectos cuantitativos de la transmision de cargas. Se presentan los resultados del estudio realizado por el metodo de elementos finitos. Se escogieron valores de variables mecanicas y geometricas que permitieran una interpretacion critica del fenomeno. El estudio dio por resultado el enunciado de una ecuacion de regresion lineal multiple con la que se calcula el factor de modificacion de la carga. Titulo en frances: "Etude sur le mecanisme de transfer de charge pour le projet de chaussees goujonnees en beton". Ver ficha general IRRD 401001.
The laser scanning is a technology that allows in a short time to run the relief geometric object... more The laser scanning is a technology that allows in a short time to run the relief geometric objects with a high level of detail and completeness, based on the signal emitted by the laser and the corresponding return signal. When the incident laser radiation hits the object to detect, then the radiation is reflected. The purpose is to build a three-dimensional digital model that allows to reconstruct the reality of the object and to conduct studies regarding the design, restoration and/or conservation. When the laser scanner is equipped with a digital camera, the result of the measurement process is a set of points in XYZ coordinates showing a high density and accuracy with radiometric and RGB tones. In this case, the set of measured points is called “point cloud” and allows the reconstruction of the Digital Surface Model. Even the post-processing is usually performed by closed source software, which is characterized by Copyright restricting the free use, free and open source software can increase the perfo...
The management of the emergencies requires an immediate availability of information and data from... more The management of the emergencies requires an immediate availability of information and data from the field, like those acquired from monitoring and alerting sensors or, after a disastrous event, the information of the reconnaissance of damage. For this purpose, an integrated DBMS-GIS system has been developed, using exclusively free and open source software, to dynamically create and populate via Web a spatial database. In particular, assuming that more teams draw up an inventory of the damage, we highlight the benefits of a real-time transmission of the information collected from the field to headquarters. The approach has been successfully tested in the management of the navigation of an autonomous robot, assigning the optimal path and mapping its trajectories and all data acquired.
The Structure From Motion (SFM) is a technique applied to a series of photographs of an object th... more The Structure From Motion (SFM) is a technique applied to a series of photographs of an object that returns a 3D reconstruction made up by points in the space (point clouds). This research aims at comparing the results of the SFM approach with the results of a 3D laser scanning in terms of density and accuracy of the model. The experience was conducted by detecting several architectural elements (walls and portals of historical buildings) both with a 3D laser scanner of the latest generation and an amateur photographic camera. The point clouds acquired by laser scanner and those acquired by the photo camera have been systematically compared. In particular we present the experience carried out on the “Don Diego Pappalardo Palace” site in Pedara (Catania, Sicily).The Structure From Motion (SFM) is a technique applied to a series of photographs of an object that returns a 3D reconstruction made up by points in the space (point clouds). This research aims at comparing the results of the SFM approach with the results of a 3D laser scanning in terms of density and accuracy of the model. The experience was conducted by detecting several architectural elements (walls and portals of historical buildings) both with a 3D laser scanner of the latest generation and an amateur photographic camera. The point clouds acquired by laser scanner and those acquired by the photo camera have been systematically compared. In particular we present the experience carried out on the “Don Diego Pappalardo Palace” site in Pedara (Catania, Sicily).
We deal with the theme of the simulation of risk analysis using a technological approach based on... more We deal with the theme of the simulation of risk analysis using a technological approach based on the integration of exclusively free and open source tools: PostgreSQL as Database Management System (DBMS) and Quantum GIS-GRASS as Geographic Information System (GIS) platform. The case study is represented by a seismic land in Sicily characterized by steep slopes and frequent instability phenomena. This area includes a city of about 30.000 inhabitants (Enna) that lies on the top of a mountain at about 990 m a.s.l.. The access to the city is assured by few and very winding roads that are also highly vulnerable to seismic and hydrogeological hazards. When exceptional rainfall events occur, the loss of efficiency of these roads should compromise timeliness and effectiveness of rescue operations. The data of the sample area have been structured into the adopted DBMS, and the connection to the GIS functionalities allows simulating the exceptional events. We analyzed the hazard, vulnerability and exposure related...
The aim of this work is the stabilization of a Gimbal platform for optical sensors acquisitions i... more The aim of this work is the stabilization of a Gimbal platform for optical sensors acquisitions in topographic applications using mobile vehicles. The stabilization of the line of sight (LOS) consists in tracking the command velocity in presence of nonlinear noise due to the external environment. The hardware architecture is characterized by an Ardupilot platform that allows the control of both the mobile device and the Gimbal. Here we developed a new approach to stabilize the Gimbal platform, which is based on neural network. For the control system, we considered a plant that represents the transfer function of the servo system control model for an inertial stabilized Gimbal platform. The transductor used in the feed-back line control is characterized by the Rate Gyro transfer function installed onboard of Ardupilot. For the simulation and investigation of the system performance, we used the Simulink tool of Matlab. Results show that the hardware/software approach is efficient, reliable and cheap for direct photogrammetry, as well as for general purpose applications using mobile vehicles.
Atti 11 a Conferenza Nazionale ASITA, Centro Congressi Lingotto, Torino 6 9 novembre 2007 ... P... more Atti 11 a Conferenza Nazionale ASITA, Centro Congressi Lingotto, Torino 6 9 novembre 2007 ... Piattaforma per Location Based Services di logistica e mobilità ... Maurizio BOMBARA ( *** ) , Davide CALÍ ( *** ) , Ivana CALÍ ( *** ) , Giuseppe TROPEA ( *** ) ,
Human society is nowadays strongly dependent on an articulated and complex network of road infras... more Human society is nowadays strongly dependent on an articulated and complex network of road infrastructures. Essential services for current users as well as for every kind of human activity have been entrusted to this network that takes the name of “lifeline”. Network Reliability Analysis mainly measures network performance related to its capability to oppose or react against the failure of single elements. When a catastrophic event strikes a wide area, it is necessary that the infrastructure system is designed with a high redundancy, to have effective alternatives in choosing a route to maintain network function. However, if in mathematical analysis of a simple structure, a redundancy rate could clearly be defined, it would not be sufficient to quantify the redundancy effect in a more complex and real-life structure such as a road network. In this paper, we propose a GIS (Geographic Information System) based methodology to study the road Network effectiveness after a seismic event. ...
This paper presents a suggested approach for forensic investigation of bridge decks in which Grou... more This paper presents a suggested approach for forensic investigation of bridge decks in which Ground penetrating radar (GPR) consisting of two antennas is used to assess the current conditions. The methodology was tested on a bridge deck in central Sicily. The acquired data were analyzed for identifying the asphalt overlay thickness, concrete cover depth and deck thickness and location of the rebar reinforcement. In the proposed approach for assessing bridge deck conditions the GPR survey was complemented with (i) a site investigation on layer thicknesses for calibration/verification purposes of the GPR response and (ii) a Terrestrial Laser Scanning system (TLS) to verify the bridge design slab curvature. The study shows that this methodology has significant merits on accurately assessing such bridge deck components when bridge design records are non-existing, and by using non-invasive methods such as laser scanning and GPR. The great advantage provided by the TLS technique is the po...
Within research co-ordinated by Prof. Giorgio Manzoni of Trieste University and turned to identif... more Within research co-ordinated by Prof. Giorgio Manzoni of Trieste University and turned to identify and test methods and procedures for road survey using a special ve- hicle with GPS/INS equipment, routes plotting on digital maps is considered. About this aspect, taking into account that this mobile can operate not only in Italy, but also in other countries of CEI, problem of datum transformation from WGS84 to other related to specificity of the territory is analyzed. In this paper, after a brief resume of the main characteristics of the official cartography of different countries (type of representation and reference ellipsoid), operations for Helmert and Molodensky transformations are illustrated; then applications on transformations from WGS84 to Italian UTM (ED50) and to Italian Gauss-Boaga (Roma 40) are presented in reference to a Sicilian road survey around Etna volcano.
XII CONGRESO MUNDIAL IRF, MADRID 1993. TOMO 4, May 1, 1993
El articulo forma parte de un amplio programa de investigacion cuyo objeto es realizar un estudio... more El articulo forma parte de un amplio programa de investigacion cuyo objeto es realizar un estudio a fondo de la transmision de cargas en firmes de hormigon armado con juntas (JRCP). Las fases preliminares de la investigacion, realizadas con ensayos experimentales sobre modelos, pusieron de manifiesto algunos aspectos claves del fenomeno. Los ensayos indicaron la necesidad de ampliar el estudio para definir en detalle los aspectos cuantitativos de la transmision de cargas. Se presentan los resultados del estudio realizado por el metodo de elementos finitos. Se escogieron valores de variables mecanicas y geometricas que permitieran una interpretacion critica del fenomeno. El estudio dio por resultado el enunciado de una ecuacion de regresion lineal multiple con la que se calcula el factor de modificacion de la carga. Titulo en frances: "Etude sur le mecanisme de transfer de charge pour le projet de chaussees goujonnees en beton". Ver ficha general IRRD 401001.
The laser scanning is a technology that allows in a short time to run the relief geometric object... more The laser scanning is a technology that allows in a short time to run the relief geometric objects with a high level of detail and completeness, based on the signal emitted by the laser and the corresponding return signal. When the incident laser radiation hits the object to detect, then the radiation is reflected. The purpose is to build a three-dimensional digital model that allows to reconstruct the reality of the object and to conduct studies regarding the design, restoration and/or conservation. When the laser scanner is equipped with a digital camera, the result of the measurement process is a set of points in XYZ coordinates showing a high density and accuracy with radiometric and RGB tones. In this case, the set of measured points is called “point cloud” and allows the reconstruction of the Digital Surface Model. Even the post-processing is usually performed by closed source software, which is characterized by Copyright restricting the free use, free and open source software can increase the perfo...
The management of the emergencies requires an immediate availability of information and data from... more The management of the emergencies requires an immediate availability of information and data from the field, like those acquired from monitoring and alerting sensors or, after a disastrous event, the information of the reconnaissance of damage. For this purpose, an integrated DBMS-GIS system has been developed, using exclusively free and open source software, to dynamically create and populate via Web a spatial database. In particular, assuming that more teams draw up an inventory of the damage, we highlight the benefits of a real-time transmission of the information collected from the field to headquarters. The approach has been successfully tested in the management of the navigation of an autonomous robot, assigning the optimal path and mapping its trajectories and all data acquired.
The Structure From Motion (SFM) is a technique applied to a series of photographs of an object th... more The Structure From Motion (SFM) is a technique applied to a series of photographs of an object that returns a 3D reconstruction made up by points in the space (point clouds). This research aims at comparing the results of the SFM approach with the results of a 3D laser scanning in terms of density and accuracy of the model. The experience was conducted by detecting several architectural elements (walls and portals of historical buildings) both with a 3D laser scanner of the latest generation and an amateur photographic camera. The point clouds acquired by laser scanner and those acquired by the photo camera have been systematically compared. In particular we present the experience carried out on the “Don Diego Pappalardo Palace” site in Pedara (Catania, Sicily).The Structure From Motion (SFM) is a technique applied to a series of photographs of an object that returns a 3D reconstruction made up by points in the space (point clouds). This research aims at comparing the results of the SFM approach with the results of a 3D laser scanning in terms of density and accuracy of the model. The experience was conducted by detecting several architectural elements (walls and portals of historical buildings) both with a 3D laser scanner of the latest generation and an amateur photographic camera. The point clouds acquired by laser scanner and those acquired by the photo camera have been systematically compared. In particular we present the experience carried out on the “Don Diego Pappalardo Palace” site in Pedara (Catania, Sicily).
We deal with the theme of the simulation of risk analysis using a technological approach based on... more We deal with the theme of the simulation of risk analysis using a technological approach based on the integration of exclusively free and open source tools: PostgreSQL as Database Management System (DBMS) and Quantum GIS-GRASS as Geographic Information System (GIS) platform. The case study is represented by a seismic land in Sicily characterized by steep slopes and frequent instability phenomena. This area includes a city of about 30.000 inhabitants (Enna) that lies on the top of a mountain at about 990 m a.s.l.. The access to the city is assured by few and very winding roads that are also highly vulnerable to seismic and hydrogeological hazards. When exceptional rainfall events occur, the loss of efficiency of these roads should compromise timeliness and effectiveness of rescue operations. The data of the sample area have been structured into the adopted DBMS, and the connection to the GIS functionalities allows simulating the exceptional events. We analyzed the hazard, vulnerability and exposure related...
The aim of this work is the stabilization of a Gimbal platform for optical sensors acquisitions i... more The aim of this work is the stabilization of a Gimbal platform for optical sensors acquisitions in topographic applications using mobile vehicles. The stabilization of the line of sight (LOS) consists in tracking the command velocity in presence of nonlinear noise due to the external environment. The hardware architecture is characterized by an Ardupilot platform that allows the control of both the mobile device and the Gimbal. Here we developed a new approach to stabilize the Gimbal platform, which is based on neural network. For the control system, we considered a plant that represents the transfer function of the servo system control model for an inertial stabilized Gimbal platform. The transductor used in the feed-back line control is characterized by the Rate Gyro transfer function installed onboard of Ardupilot. For the simulation and investigation of the system performance, we used the Simulink tool of Matlab. Results show that the hardware/software approach is efficient, reliable and cheap for direct photogrammetry, as well as for general purpose applications using mobile vehicles.
Atti 11 a Conferenza Nazionale ASITA, Centro Congressi Lingotto, Torino 6 9 novembre 2007 ... P... more Atti 11 a Conferenza Nazionale ASITA, Centro Congressi Lingotto, Torino 6 9 novembre 2007 ... Piattaforma per Location Based Services di logistica e mobilità ... Maurizio BOMBARA ( *** ) , Davide CALÍ ( *** ) , Ivana CALÍ ( *** ) , Giuseppe TROPEA ( *** ) ,
Human society is nowadays strongly dependent on an articulated and complex network of road infras... more Human society is nowadays strongly dependent on an articulated and complex network of road infrastructures. Essential services for current users as well as for every kind of human activity have been entrusted to this network that takes the name of “lifeline”. Network Reliability Analysis mainly measures network performance related to its capability to oppose or react against the failure of single elements. When a catastrophic event strikes a wide area, it is necessary that the infrastructure system is designed with a high redundancy, to have effective alternatives in choosing a route to maintain network function. However, if in mathematical analysis of a simple structure, a redundancy rate could clearly be defined, it would not be sufficient to quantify the redundancy effect in a more complex and real-life structure such as a road network. In this paper, we propose a GIS (Geographic Information System) based methodology to study the road Network effectiveness after a seismic event. ...
This paper presents a suggested approach for forensic investigation of bridge decks in which Grou... more This paper presents a suggested approach for forensic investigation of bridge decks in which Ground penetrating radar (GPR) consisting of two antennas is used to assess the current conditions. The methodology was tested on a bridge deck in central Sicily. The acquired data were analyzed for identifying the asphalt overlay thickness, concrete cover depth and deck thickness and location of the rebar reinforcement. In the proposed approach for assessing bridge deck conditions the GPR survey was complemented with (i) a site investigation on layer thicknesses for calibration/verification purposes of the GPR response and (ii) a Terrestrial Laser Scanning system (TLS) to verify the bridge design slab curvature. The study shows that this methodology has significant merits on accurately assessing such bridge deck components when bridge design records are non-existing, and by using non-invasive methods such as laser scanning and GPR. The great advantage provided by the TLS technique is the po...
Uploads
Papers by Giuseppe Mussumeci