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Generation of true ortho-images based on virtual worlds: Learning aspects / Eduardo J. Piatti in Photogrammetric record, vol 29 n° 145 (March - May 2014)  

Public [article]  inPhotogrammetric record > vol 29 n° 145 (March - May 2014) . - pp 49 - 67 Titre : Generation of true ortho-images based on virtual worlds: Learning aspects Type de document : Article/Communication Auteurs : Eduardo J. Piatti, Auteur ; José Luis Lerma, Auteur Année de publication : 2014 Article en page(s) : pp 49 - 67 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Orthophotographie, orthoimage [Termes IGN] apprentissage automatique [Termes IGN] milieu urbain [Termes IGN] modèle numérique de surface [Termes IGN] orientation externe [Termes IGN] orientation interne [Termes IGN] orthoimage [Termes IGN] orthorectification [Termes IGN] réalité virtuelle [Termes IGN] simulation Résumé : (Auteur) Many of the theoretical concepts in photogrammetry are difficult to understand by means of equations and figures. Furthermore, commercial software is not usually adapted to the requirements of teaching and learning. However, photogrammetric simulation software based on virtual worlds can be used to improve both learning and understanding of complex geometrical issues such as the generation of true ortho-images in urban areas, and assists in training and skills development. This paper tackles image orthorectification by means of a photogrammetric simulation and its generation based on digital elevation/building/surface models, and the interior and exterior orientation parameters of the image sensor, namely, a digital camera. Internal processes such as masking and visibility analysis which are necessary to yield successful true ortho-images are reported, with examples from both simple and complex urban environments. Numéro de notice : A2014-155 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12053 Date de publication en ligne : 26/11/2014 En ligne : https://doi.org/10.1111/phor.12053 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33060 [article]

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106-2014011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Virtual worlds for photogrammetric image-based simulation and learning / Eduardo J. Piatti in Photogrammetric record, vol 28 n° 141 (March - May 2013)  

Public [article]  inPhotogrammetric record > vol 28 n° 141 (March - May 2013) . - pp 27 - 42 Titre : Virtual worlds for photogrammetric image-based simulation and learning Type de document : Article/Communication Auteurs : Eduardo J. Piatti, Auteur ; José Luis Lerma, Auteur Année de publication : 2013 Article en page(s) : pp 27 - 42 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] données localisées 3D [Termes IGN] image aérienne [Termes IGN] image virtuelle [Termes IGN] monde virtuel [Termes IGN] restitution [Termes IGN] simulation [Termes IGN] visualisation 3D Résumé : (Auteur) Simulation is a common activity in many fields and pursuits, not only for teaching but also for learning, training, monitoring, research and entertainment, among others. This paper presents the criteria used to develop virtual scenarios for photogrammetric simulation based on both synthetic objects and synthetic images. The workflow used to generate three-dimensional (3D) virtual worlds is presented together with the subsequent reconstruction of the metric perspective images (synthetic scenes) emulating any type of frame camera in any kind of terrestrial or aerial set-up, the latter with an aeroplane, helicopter or unmanned aerial vehicle (UAV). A simulator can be used to create 3D virtual worlds in order to improve an understanding of mission planning, generate synthetic image sequences with suitable overlaps, as well as optimising image data acquisition before undertaking expensive photogrammetric surveys in the field. Numéro de notice : A2013-150 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12001 Date de publication en ligne : 29/01/2013 En ligne : https://doi.org/10.1111/phor.12001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32288 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
106-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible