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Empirical comparison of full-waveform Lidar algorithms: range extraction and discrimination performance / C. Parrish in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 8 (August 2011)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 77 n° 8 (August 2011) . - pp 825 - 838 Titre : Empirical comparison of full-waveform Lidar algorithms: range extraction and discrimination performance Type de document : Article/Communication Auteurs : C. Parrish, Auteur ; I. Robert, Auteur ; R. Nowak, Auteur ; B. Smith, Auteur Année de publication : 2011 Article en page(s) : pp 825 - 838 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] analyse comparative [Termes IGN] analyse discriminante [Termes IGN] détection de contours [Termes IGN] extraction de données [Termes IGN] lidar à retour d'onde complète [Termes IGN] performance [Termes IGN] signal lidar Résumé : (Auteur) As third-party lidar software manufacturers are increasingly adding support for full-waveform data, a common question is which algorithm(s) to implement. To this end, a new approach is needed to compare and contrast various lidar waveform processing strategies from a practical, operational perspective. Quality and type of information output, processing speed, suitability for particular applications, robustness against poor parameter selection, and more subjective measures related to user experience are of interest. This paper describes a new empirical method of comparing range extraction and discrimination performance of different algorithms, based on a ranging-lab setup with multiple, adjustable screen targets, with precisely-measured separations. We present the results of comparing three different algorithms described in the scientific literature. The results show distinct differences and also indicate that there is no "one-size-fits-all" approach: the choice of a specific algorithm and adjustable parameter settings are highly application-dependent. Numéro de notice : A2011-350 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.77.8.825 En ligne : https://doi.org/10.14358/PERS.77.8.825 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31129 [article]

A spatio-temporal ontology for geographic information integration / T. Bittner in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 765 - 798 Titre : A spatio-temporal ontology for geographic information integration Type de document : Article/Communication Auteurs : T. Bittner, Auteur ; Maureen Donnelly, Auteur ; B. Smith, Auteur Année de publication : 2009 Article en page(s) : pp 765 - 798 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données [Termes IGN] données localisées [Termes IGN] information géographique [Termes IGN] intégration de données [Termes IGN] interopérabilité [Termes IGN] langage de modélisation [Termes IGN] ontologie [Termes IGN] raisonnement spatiotemporel Résumé : (Auteur) This paper presents an axiomatic formalization of a theory of top-level relations between three categories of entities: individuals, universals, and collections. We deal with a variety of relations between entities in these categories, including the sub-universal relation among universals and the parthood relation among individuals, as well as cross-categorial relations such as instantiation and membership. We show that an adequate understanding of the formal properties of such relations - in particular their behavior with respect to time - is critical for geographic information processing. The axiomatic theory is developed using Isabelle, a computational system for implementing logical formalisms. All proofs are computer verified and the computational representation of the theory is available online. Copyright Taylor & Francis Numéro de notice : A2009-317 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701776767 En ligne : https://doi.org/10.1080/13658810701776767 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29947 [article]

Exemplaires(2)

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Performance analysis of ALTM 3100EA: instrument specifications and accuracy of Lidar data / R.V. Ussyshkin in Revue Française de Photogrammétrie et de Télédétection, n° 182 (Juin 2006)  

Public [article]  inRevue Française de Photogrammétrie et de Télédétection > n° 182 (Juin 2006) . - pp 66 - 72 Titre : Performance analysis of ALTM 3100EA: instrument specifications and accuracy of Lidar data Type de document : Article/Communication Auteurs : R.V. Ussyshkin, Auteur ; B. Smith, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 66 - 72 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] ALTM [Termes IGN] capteur aérien [Termes IGN] données lidar [Termes IGN] instrumentation Optech [Termes IGN] précision des données [Termes IGN] précision des mesures [Termes IGN] spécification de produit [Termes IGN] test de performance Résumé : (Auteur) Over the last decade the number of airborne lidar systems currently deployed and operating in the field has grown impressively. This growth has intensified the level of competition among lidar equipment manufacturers. As manufacturers vie for increased market share with claims of ever higher accuracy specifications, lidar end users wonder how these specifications actually affect achievable accuracy of the lidar data. Aware of the interest that professional organizations such as ISPRS/ASPRS have shown in establishing quality control guidelines for reporting accuracy in lidar data, Optech Incorporated, a leading manufacturer of airborne lidar equipment, conducted a series of studies that examined issues that included, among others, vertical accuracy and Position and Orientation System (POS) performance. Since accuracy specifications can be the product of different testing methodologies and subject to the interpretation of data, the final arbiter of competing claims is actual system performance. The studies that Optech carried out included performance analyses of the ALTM 31OOEA laser mapping system. This instrument demonstrated that it is capable of producing mapping data with relative accuracies on the sub-decimeter level. However, the limiting factors in obtaining overall absolute sub-decimeter accuracies are often due to the performance of various subsystems that contribute to the total ALTM error budget. This paper represents the manufacturer's effort to relate the engineering analysis of instrument performance to what is demonstrably achievable accuracy in the lidar data of end users. Copyright SFPT Numéro de notice : A2006-623 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS2-28.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28346 [article]

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018-06021	RAB	Revue	Centre de documentation	En réserve L003	Disponible