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Non-contact 3D measurement of buildings through close range photogrammetry and a laser distance meter / J. Martinez 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 805 - 811 Titre : Non-contact 3D measurement of buildings through close range photogrammetry and a laser distance meter Type de document : Article/Communication Auteurs : J. Martinez, Auteur ; C. Ordonez, Auteur ; Pedro Arias, Auteur ; Julia Armesto, Auteur Année de publication : 2011 Article en page(s) : pp 805 - 811 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] bâtiment [Termes IGN] données localisées 3D [Termes IGN] lever souterrain [Termes IGN] photogrammétrie métrologique [Termes IGN] photogrammétrie terrestre [Termes IGN] télémétrie laser terrestre Résumé : (Auteur) Close-range photogrammetry is a widely used technique to acquire dimensional data of buildings. The indirect measurement of buildings under construction from images avoids the use of tedious and risky direct procedures. In this paper, we present the extension of a 2D low-cost measurement system previously developed to a 3D measurement of buildings under construction. This system consists of a digital, off-the-shelf camera and a laser distance meter which is mounted on an in-house support that permits independent orientation of the distance meter. Combining the image, the distance and the support orientation from different points of view, we can obtain a scaled 3D model that permits us to make an inventory of a building under construction with a relative error below 0.7 percent. Numéro de notice : A2011-349 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.77.8.805 En ligne : https://doi.org/10.14358/PERS.77.8.805 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31128 [article]

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]