Centre de documentation
scientifique

Attribute profiles on derived features for urban land cover classification / Bharath Bhushan Damodaran in Photogrammetric Engineering & Remote Sensing, PERS, vol 83 n° 3 (March 2017)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 83 n° 3 (March 2017) . - pp 183 - 193 Titre : Attribute profiles on derived features for urban land cover classification Type de document : Article/Communication Auteurs : Bharath Bhushan Damodaran, Auteur ; Joachim Höhle, Auteur ; Sébastien Lefèvre, Auteur Année de publication : 2017 Article en page(s) : pp 183 - 193 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] attribut [Termes IGN] classification dirigée [Termes IGN] données auxiliaires [Termes IGN] hauteur ellipsoïdale [Termes IGN] image aérienne [Termes IGN] image multibande [Termes IGN] indice de végétation [Termes IGN] occupation du sol [Termes IGN] précision de la classification [Termes IGN] zone urbaine Résumé : (Auteur) This research deals with the automatic generation of 2D land cover maps of urban areas using very high resolution multispectral aerial imagery. The appropriate selection of classifier and attributes is important to achieve high thematic accuracies. In this paper, new attributes are generated to increase the discriminative power of auxiliary information provided by remote sensing images. The generated attributes are derived from the vegetation index and elevation information using morphological attribute profiles. The extended experimental evaluation and comparison of attribute profile-based mapping solutions is conducted to derive the optimal combinations of attributes required for classification and to understand the genericity of attributes on a range of classifiers, i.e., various combinations of attributes and classifiers. Experimental results with two high resolution images show that the proposed attributes derived on auxiliary information outperform the existing attribute profiles computed on original image and its principal components. Numéro de notice : A2017-087 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.83.3.183 En ligne : https://doi.org/10.14358/PERS.83.3.183 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84422 [article]

Assessment of the quality of digital terrain models / Joachim Höhle (December 2011)  

Public Titre : Assessment of the quality of digital terrain models Type de document : Rapport Auteurs : Joachim Höhle, Auteur ; Marketa Potukova, Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : December 2011 Collection : EuroSDR official publication, ISSN 0257-0505 num. 60 Importance : 85 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] acquisition de données [Termes IGN] filtrage d'information [Termes IGN] modèle numérique de surface [Termes IGN] modèle numérique de terrain [Termes IGN] photogrammétrie aérienne [Termes IGN] télédétection aérienne Index. décimale : 30.60 Géodésie spatiale Numéro de notice : 21793 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Rapport d'étude technique DOI : sans En ligne : http://www.eurosdr.net/sites/default/files/uploaded_files/eurosdr_publication_nd [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91251

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21793-01	33.60	Livre	Centre de documentation	Photogrammétrie - Lasergrammétrie	Disponible

DEM generation using a digital large format frame camera / Joachim Höhle in Photogrammetric Engineering & Remote Sensing, PERS, vol 75 n° 1 (January 2009)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 75 n° 1 (January 2009) . - pp 87 - 93 Titre : DEM generation using a digital large format frame camera Type de document : Article/Communication Auteurs : Joachim Höhle, Auteur Année de publication : 2009 Article en page(s) : pp 87 - 93 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] chambre à grand format [Termes IGN] image aérienne [Termes IGN] modèle numérique de surface [Termes IGN] photographie à grande échelle [Termes IGN] précision altimétrique [Termes IGN] traitement d'image Résumé : (Auteur) Progress in automated photogrammetric DEM generation is presented. Starting from the procedures and the performance parameters of automated photogrammetric DEM generation, the results of some practical tests with large scale images are presented. The DEMs are derived from images taken by a digital large-frame aerial camera and checked by reference data of superior accuracy. In average, a vertical accuracy of ó h = 13 cm or 0.20 per thousand of the mean flying height above mean terrain has been achieved. Some recent innovations in digital large-frame cameras and in the processing software give hope for even better results. In comparison with results from film-based cameras, it can be stated that both technologies are able to produce very dense and accurate DEMs. Copyright ASPRS Numéro de notice : A2009-009 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.75.1.87 En ligne : https://doi.org/10.14358/PERS.75.1.87 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29639 [article]

E-learning in practice : EuroSDR course experience / Joachim Höhle in GIM international, vol 22 n° 9 (September 2008)

Public [article]  inGIM international > vol 22 n° 9 (September 2008) . - pp 18 - 20 Titre : E-learning in practice : EuroSDR course experience Type de document : Article/Communication Auteurs : Joachim Höhle, Auteur Année de publication : 2008 Article en page(s) : pp 18 - 20 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] apprentissage en ligne [Termes IGN] données localisées [Termes IGN] formation continue [Termes IGN] photogrammétrie numérique Résumé : (Auteur) Continuing Professional Education (CPD) is a hot topic, since new technologies are emerging almost daily, while knowledge rapidly ages. The internet provides news possibilities, enabling mid-career people to learn at any time and in any place. Since 2003 the European Organisation for Spatial Data Research (EuroSDR) has been providing blended learning courses. the author elaborates on their design and experience gained. Copyright Reed Business Information Numéro de notice : A2008-337 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29330 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
061-08091	RAB	Revue	Centre de documentation	En réserve L003	Disponible

The EuroSDR Test “Checking and Improving of Digital Terrain Models” / Joachim Höhle (2006)    

Public contenu dans [Three reports of EuroSDR projects] / European Spatial Data Research EuroSDR (2006)   Titre : The EuroSDR Test “Checking and Improving of Digital Terrain Models” Type de document : Rapport Auteurs : Joachim Höhle, Auteur ; Markéta Potůčková, Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 2006 Collection : EuroSDR official publication, ISSN 0257-0505 num. 51 Importance : pp 9 - 142 Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] contrôle qualité [Termes IGN] généralisation de MNT [Termes IGN] image aérienne [Termes IGN] modèle numérique de terrain [Termes IGN] orthoimage [Termes IGN] précision des mesures [Termes IGN] précision géométrique (imagerie) [Termes IGN] superposition d'images Résumé : (auteur) This report deals with research work how digital terrain models can automatically be checked and improved. Test material consisting of three DTMs of different acquisition methods has been prepared, and six research groups applied their methods with the delivered DTMs. The provided imagery is suitable for the production of orthoimages and serves also as auxiliary material for the checking and improving of DTMs. The results of the participants were analyzed by means of accurate reference material with regard to accuracy. Furthermore, the completeness and degree of automation at the different methods have been evaluated. The report describes in detail the delivered test material, the characteristics of the different methods, the strategy in the evaluation including the applied accuracy measures. The improving of DTMs is also possible to a large extent. A thematic map can give a quick overview where additional measurements are required. The applied methods are compared by means of the accuracy measures derived both from the delivered material and from the accurate reference data of the pilot centre. One method, which derives correction for the delivered DTM by means of parallaxes between two overlapping orthoimages, was applied to all test areas and achieved the best results. The three DTMs could be tested with an accuracy of σh=0.015% of the flying height. Proposals for future practical work and further investigations are given. The results of this investigation will also be disseminated in educational seminars and e-learning courses of the EuroSDR. The contributions of the participating research groups are attached in the appendix of the report. Note de contenu : bibliographie Numéro de notice : H2006-001 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Chapître / contribution En ligne : http://www.eurosdr.net/publications/official-publication-no-51-2006 Format de la ressource électronique : URL bulletin Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=93667

Documents numériques

en open access Checking and Improving... - pdf auteur Adobe Acrobat PDF

Automatic orientation of aerial images on database information / Joachim Höhle (01/09/1999)

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Revision measurement of large scale topographic data / R.P. Kirby (1999)

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vol 52 n° 6 - December 1997 - Computer-Assisted Teaching and Learning (CAT-CAL) (Bulletin de ISPRS Journal of photogrammetry and remote sensing) / K. Cho

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Experiences with the production of digital orthophotos / Joachim Höhle in Photogrammetric Engineering & Remote Sensing, PERS, vol 62 n° 10 (october 1996)  

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Le système d'assistance à la stéréorestitution graphique Wild Avioplot RAP / Joachim Höhle in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 85 (Janvier 1982)

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