Fulvio Rinaudo | Politecnico di Torino (original) (raw)
Papers by Fulvio Rinaudo
In this work, the integration between data provided by Time-of- light cameras and a multi-image m... more In this work, the integration between data provided by Time-of- light cameras and a multi-image matching technique for metric surveys of architectural elements is presented. The main advantage is given by the quickness in the data acquisition (few minutes) and the reduced cost of the instruments. The goal of this approach is the automatic extraction of the object breaklines in a 3D environment using a photogrammetric process, which is helpful for the final user exigencies for the reduction of the time needed for the drawing production. The results of the performed tests on some architectural elements will be reported in this paper.
GIS technology has been recognised as one of the best instruments able to join and relate data co... more GIS technology has been recognised as one of the best instruments able to join and relate data coming from different disciplines involved in a documentation process of Cultural Heritage objects. The RecorDIM (Recording, Documentation and Information Management) project defined some general rules to be followed when GIS technology is used to share documentation results among all the possible users (e.g. conservators, restorers, land planners, etc.). The aim of the paper is to show a real application of the proposed rules inside an Interreg III-A (community initiative seeking to favour the harmonious and even development of European territory by encouraging cross-border cooperation) ALCOTRA (Alpi Latine COoperazione TRAnsfrontaliera) project managed by the Italian Valle d'Aosta Region. The Valle d'Aosta Region assigned to the Politecnico di Torino research group (teachers of the High School on Cultural Heritage and Landscape) the goal of placing the results of the archaeological and historical investigations inside a not structured GIS files. This particular approach will allow the integration of the collected data in the regional GIS used for land planning and land risk assessment. This approach required a planning of the recording strategies adopted by the different specialists involved in the project and the structuring of the collected data in a way that could allow the dissemination of the results among all the land planners at every scale (from regional scale up to urban scale). The proposed approach will allow an easy and direct access to the results of historical and archaeological investigations to the specialists involved in the plan of future landscapes and land uses.
ABSTRACT Results of measurements of atmospheric aerosol performed with multiwavelength lidar are ... more ABSTRACT Results of measurements of atmospheric aerosol performed with multiwavelength lidar are presented. An approach to retrieve profiles of aerosol particle size distribution was elaborated. It consists in direct fit of predefined distribution (usually combination of lognormal functions with a few free parameters) to the experimental signals. The approach was used for retrieving marine aerosol distributions. Studies of behavior of the particles at the cumulus cloud base were performed as well. There the assumptions based on Twomey's model of the adiabatic parcel were used to support the retrieving technique which was adopted to analyze lidar profiles (at 355, 532 and 1064 nm wavelengths) registered in the region of the base of small warm cumulus clouds. Size distribution profiles and changes of particle effective radius within the range of 0.5 - 3 μm were discussed.© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Society of Photo-Optical Instrumentation …, Jan 1, 2010
In this paper, a new integrated approach between airborne laser scanner and photogrammetric aeria... more In this paper, a new integrated approach between airborne laser scanner and photogrammetric aerial images is proposed. This procedure is focused on the possibility of overcoming the problems of each technique separately through their integration during the data processing. The LIDAR and multi-image matching techniques combine data in order to extract building boundaries in the space and define other map details visible from the images in an automatic way. This process could allow the extracted edges to be exploited as building boundaries in the segmentation when an ambiguity occurs in this process. The detailed description of this approach and its first promising results on an urban area will be presented and discussed.
Total stations and GPS receiver are normally used separately for terrestrial survey of cultural h... more Total stations and GPS receiver are normally used separately for terrestrial survey of cultural heritage, and the natural development has been the production of a single instrument where both a GPS and a total station work together. Several problems, such as the different reference systems used by the two techniques, require a geodetic approach to solve them. Leica Geosystems was launched SmartStation, an innovative product that integrates a GPS double frequency receiver and a Total Station series 1200. The real integration is obtained from a new firmware that is able to manage and store both kinds of measurements: angle and distance, RTK and other GPS observations. The GPS observations are functionally to the reference system set-up, while total station measurements provide the north direction of the reference system, and carry out a detailed survey using celerimetric measurements. A new instrument implies a new survey methodology, compared to classical techniques. Several survey scenarios can highlight the main advantages, that is no control points are needed, and there are no long traverses, or resections. To evaluate these new technologies and compare them with traditional ones, a case study survey has been conducted on the Porte Palatine, an archaeological building site in Turin, where a topographic referenced network was signalized and measured. The comparison focused on the time-saving, the staff needed to conduct the survey (skilled and/or unskilled), and the easiness of the survey operations.
In the last few years, several papers dealing with the integration between different surveying te... more In the last few years, several papers dealing with the integration between different surveying techniques (such as photogrammetry, LiDAR, NIR image processing, 2D digital maps, etc.) have been already presented. The main idea of these works is the possibility to overcome the individual weakness of each technique through their combined use, exploiting their complementary nature. In this work, the new integration between data provided by Time-of-Flight (ToF) cameras and a multi-image matching technique is presented. In particular, this approach is considered for the cultural heritage data acquisition and processing. The main advantage is given by the quickness in the data acquisition (only few minutes are requested) and the reduced cost of the instruments, if compared to terrestrial laser scanners. According to the proposed approach, ToF camera and photogrammetric techniques continuously share information in order to extract the geometric breaklines necessary for the cultural heritage survey. One of the first experiences applying this new method on an architectural artefact is presented, in order to show its potentiality for metric survey and architectural drawing purposes.
The main goal of our activity has been the testing of a system for quick and non invasive images ... more The main goal of our activity has been the testing of a system for quick and non invasive images acquisition and their suitable processings aimed to obtain 2Do 3D models for archaeological diggings documentation. This purpose has implied the analysis and the selection of a simple and efficient data processing system for the generation of metric products such as digital elevation models and orthophotos, featured by an high level of detail regarding the excavated areas.
"E’ ormai un dato di fatto che le tecniche di rilievo metrico si rivolgono oggi ad un’acquis... more "E’ ormai un dato di fatto che le tecniche di rilievo metrico si rivolgono oggi ad un’acquisizione automatica di nuvole di punti: autocorrelazione di immagini digitali, LiDAR e le moderne camere 3D. Questo fatto fa sì che il vero rilievo metrico, ossia la definizione della forma e delle dimensioni dell’oggetto del rilievo sia oggi da eseguire a posteriori inserendo l’intelligenza del rilevatore solo dopo l’acquisizione dei punti e non prima come invece avveniva con le tradizionali tecniche fotogrammetriche di restituzione manuale o con le tecniche topografiche terrestri. E’ necessario quindi che la fase di acquisizione tenga conto di questo nuovo contesto. L’esperienza maturata e tutt’ora in corso presso il Gruppo di Ricerca del Politecnico di Torino consente di dimostrare come solo una forte integrazione tra le varie tecniche di acquisizione di nuvole di punti può consentire a posteriori di raggiungere i veri risultati del rilievo metrico che, erroneamente, molte volte vengono intesi come la semplice definizione di coordinate spaziali di una serie più o meno densa di punti. Il lavoro proposto presenta i risultati delle ricerche condotte in questi anni riguardanti lo studio e il miglioramento delle tecniche di acquisizione (fotogrammetria digitale, LiDAR e camere 3D) nonché le soluzioni originali elaborate per giungere ad una vera integrazione tra i dati primari generati da queste tecniche."
Il rilevamento dei beni culturali ed ambientali è oggi in grado di ottenere notevoli vantaggi, ag... more Il rilevamento dei beni culturali ed ambientali è oggi in grado di ottenere notevoli vantaggi, agli effetti dell'analisi dimensionale e della navigazione tridimensionale, dalla ricostruzione di modelli 3D degli oggetti stessi. Tale operazione avviene attualmente mediante la creazione di un modello tridimensionale tradizionalmente ottenuto utilizzando procedure di tipo fotogrammetrico attraverso la restituzione di coppie stereoscopiche dell'oggetto fotografato o utilizzando stazioni totali motorizzate. Recentemente sono stati introdotti sul mercato nuovi dispositivi laser scanner, con lo scopo principale di realizzare rilievi metrici di oggetti mediante la misura di un elevato numero di punti con tempi rapidi di acquisizione e precisioni sufficienti in molti campi applicativi. La creazione di un modello digitale 3D così ottenuto risulta compatibile con numerose rappresentazioni tecniche e può servire da integrazione alle metodologie di rilevamento classiche. In questo articolo si descrive un esempio di integrazione di tecniche fotogrammetriche digitali con tecniche di scansione laser riferito alla statua del faraone Rhamses II, di proprietà del Museo Egizio di Torino (catalogo # 1380).
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In this work, the integration between data provided by Time-of- light cameras and a multi-image m... more In this work, the integration between data provided by Time-of- light cameras and a multi-image matching technique for metric surveys of architectural elements is presented. The main advantage is given by the quickness in the data acquisition (few minutes) and the reduced cost of the instruments. The goal of this approach is the automatic extraction of the object breaklines in a 3D environment using a photogrammetric process, which is helpful for the final user exigencies for the reduction of the time needed for the drawing production. The results of the performed tests on some architectural elements will be reported in this paper.
GIS technology has been recognised as one of the best instruments able to join and relate data co... more GIS technology has been recognised as one of the best instruments able to join and relate data coming from different disciplines involved in a documentation process of Cultural Heritage objects. The RecorDIM (Recording, Documentation and Information Management) project defined some general rules to be followed when GIS technology is used to share documentation results among all the possible users (e.g. conservators, restorers, land planners, etc.). The aim of the paper is to show a real application of the proposed rules inside an Interreg III-A (community initiative seeking to favour the harmonious and even development of European territory by encouraging cross-border cooperation) ALCOTRA (Alpi Latine COoperazione TRAnsfrontaliera) project managed by the Italian Valle d'Aosta Region. The Valle d'Aosta Region assigned to the Politecnico di Torino research group (teachers of the High School on Cultural Heritage and Landscape) the goal of placing the results of the archaeological and historical investigations inside a not structured GIS files. This particular approach will allow the integration of the collected data in the regional GIS used for land planning and land risk assessment. This approach required a planning of the recording strategies adopted by the different specialists involved in the project and the structuring of the collected data in a way that could allow the dissemination of the results among all the land planners at every scale (from regional scale up to urban scale). The proposed approach will allow an easy and direct access to the results of historical and archaeological investigations to the specialists involved in the plan of future landscapes and land uses.
ABSTRACT Results of measurements of atmospheric aerosol performed with multiwavelength lidar are ... more ABSTRACT Results of measurements of atmospheric aerosol performed with multiwavelength lidar are presented. An approach to retrieve profiles of aerosol particle size distribution was elaborated. It consists in direct fit of predefined distribution (usually combination of lognormal functions with a few free parameters) to the experimental signals. The approach was used for retrieving marine aerosol distributions. Studies of behavior of the particles at the cumulus cloud base were performed as well. There the assumptions based on Twomey's model of the adiabatic parcel were used to support the retrieving technique which was adopted to analyze lidar profiles (at 355, 532 and 1064 nm wavelengths) registered in the region of the base of small warm cumulus clouds. Size distribution profiles and changes of particle effective radius within the range of 0.5 - 3 μm were discussed.© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Society of Photo-Optical Instrumentation …, Jan 1, 2010
In this paper, a new integrated approach between airborne laser scanner and photogrammetric aeria... more In this paper, a new integrated approach between airborne laser scanner and photogrammetric aerial images is proposed. This procedure is focused on the possibility of overcoming the problems of each technique separately through their integration during the data processing. The LIDAR and multi-image matching techniques combine data in order to extract building boundaries in the space and define other map details visible from the images in an automatic way. This process could allow the extracted edges to be exploited as building boundaries in the segmentation when an ambiguity occurs in this process. The detailed description of this approach and its first promising results on an urban area will be presented and discussed.
Total stations and GPS receiver are normally used separately for terrestrial survey of cultural h... more Total stations and GPS receiver are normally used separately for terrestrial survey of cultural heritage, and the natural development has been the production of a single instrument where both a GPS and a total station work together. Several problems, such as the different reference systems used by the two techniques, require a geodetic approach to solve them. Leica Geosystems was launched SmartStation, an innovative product that integrates a GPS double frequency receiver and a Total Station series 1200. The real integration is obtained from a new firmware that is able to manage and store both kinds of measurements: angle and distance, RTK and other GPS observations. The GPS observations are functionally to the reference system set-up, while total station measurements provide the north direction of the reference system, and carry out a detailed survey using celerimetric measurements. A new instrument implies a new survey methodology, compared to classical techniques. Several survey scenarios can highlight the main advantages, that is no control points are needed, and there are no long traverses, or resections. To evaluate these new technologies and compare them with traditional ones, a case study survey has been conducted on the Porte Palatine, an archaeological building site in Turin, where a topographic referenced network was signalized and measured. The comparison focused on the time-saving, the staff needed to conduct the survey (skilled and/or unskilled), and the easiness of the survey operations.
In the last few years, several papers dealing with the integration between different surveying te... more In the last few years, several papers dealing with the integration between different surveying techniques (such as photogrammetry, LiDAR, NIR image processing, 2D digital maps, etc.) have been already presented. The main idea of these works is the possibility to overcome the individual weakness of each technique through their combined use, exploiting their complementary nature. In this work, the new integration between data provided by Time-of-Flight (ToF) cameras and a multi-image matching technique is presented. In particular, this approach is considered for the cultural heritage data acquisition and processing. The main advantage is given by the quickness in the data acquisition (only few minutes are requested) and the reduced cost of the instruments, if compared to terrestrial laser scanners. According to the proposed approach, ToF camera and photogrammetric techniques continuously share information in order to extract the geometric breaklines necessary for the cultural heritage survey. One of the first experiences applying this new method on an architectural artefact is presented, in order to show its potentiality for metric survey and architectural drawing purposes.
The main goal of our activity has been the testing of a system for quick and non invasive images ... more The main goal of our activity has been the testing of a system for quick and non invasive images acquisition and their suitable processings aimed to obtain 2Do 3D models for archaeological diggings documentation. This purpose has implied the analysis and the selection of a simple and efficient data processing system for the generation of metric products such as digital elevation models and orthophotos, featured by an high level of detail regarding the excavated areas.
"E’ ormai un dato di fatto che le tecniche di rilievo metrico si rivolgono oggi ad un’acquis... more "E’ ormai un dato di fatto che le tecniche di rilievo metrico si rivolgono oggi ad un’acquisizione automatica di nuvole di punti: autocorrelazione di immagini digitali, LiDAR e le moderne camere 3D. Questo fatto fa sì che il vero rilievo metrico, ossia la definizione della forma e delle dimensioni dell’oggetto del rilievo sia oggi da eseguire a posteriori inserendo l’intelligenza del rilevatore solo dopo l’acquisizione dei punti e non prima come invece avveniva con le tradizionali tecniche fotogrammetriche di restituzione manuale o con le tecniche topografiche terrestri. E’ necessario quindi che la fase di acquisizione tenga conto di questo nuovo contesto. L’esperienza maturata e tutt’ora in corso presso il Gruppo di Ricerca del Politecnico di Torino consente di dimostrare come solo una forte integrazione tra le varie tecniche di acquisizione di nuvole di punti può consentire a posteriori di raggiungere i veri risultati del rilievo metrico che, erroneamente, molte volte vengono intesi come la semplice definizione di coordinate spaziali di una serie più o meno densa di punti. Il lavoro proposto presenta i risultati delle ricerche condotte in questi anni riguardanti lo studio e il miglioramento delle tecniche di acquisizione (fotogrammetria digitale, LiDAR e camere 3D) nonché le soluzioni originali elaborate per giungere ad una vera integrazione tra i dati primari generati da queste tecniche."
Il rilevamento dei beni culturali ed ambientali è oggi in grado di ottenere notevoli vantaggi, ag... more Il rilevamento dei beni culturali ed ambientali è oggi in grado di ottenere notevoli vantaggi, agli effetti dell'analisi dimensionale e della navigazione tridimensionale, dalla ricostruzione di modelli 3D degli oggetti stessi. Tale operazione avviene attualmente mediante la creazione di un modello tridimensionale tradizionalmente ottenuto utilizzando procedure di tipo fotogrammetrico attraverso la restituzione di coppie stereoscopiche dell'oggetto fotografato o utilizzando stazioni totali motorizzate. Recentemente sono stati introdotti sul mercato nuovi dispositivi laser scanner, con lo scopo principale di realizzare rilievi metrici di oggetti mediante la misura di un elevato numero di punti con tempi rapidi di acquisizione e precisioni sufficienti in molti campi applicativi. La creazione di un modello digitale 3D così ottenuto risulta compatibile con numerose rappresentazioni tecniche e può servire da integrazione alle metodologie di rilevamento classiche. In questo articolo si descrive un esempio di integrazione di tecniche fotogrammetriche digitali con tecniche di scansione laser riferito alla statua del faraone Rhamses II, di proprietà del Museo Egizio di Torino (catalogo # 1380).
Google, Inc. (search). ...