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Evaluation of Lidar-derived DEMs through terrain analysis and field / Cody P. Gillin in Photogrammetric Engineering & Remote Sensing, PERS, vol 81 n° 5 (May 2015)
[article]
Titre : Evaluation of Lidar-derived DEMs through terrain analysis and field Type de document : Article/Communication Auteurs : Cody P. Gillin, Auteur ; Scott W. Bailey, Auteur ; Kevin J. McGuire, Auteur ; Stephen P. Prisley, Auteur Année de publication : 2015 Article en page(s) : pp 387 - 396 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] bassin hydrographique
[Termes IGN] crète (ligne)
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] filtre passe-bas
[Termes IGN] modèle numérique de surface
[Termes IGN] pas d'échantillonnage au sol
[Termes IGN] penteRésumé : (auteur) Topographic analysis of watershed-scale soil and hydrological processes using digital elevation models (DEMs) is commonplace, but most studies have used DEMs of 10 m resolution or coarser. Availability of higher-resolution DEMs created from light detection and ranging (lidar) data is increasing but their suitability for such applications has received little critical evaluation. Two different 1 m DEMs were re-sampled to 3, 5, and 10 m resolutions and used with and without a low-pass smoothing filter to delineate catchment boundaries and calculate topographic metrics. Accuracy was assessed through comparison with field slope measurements and total station surveys. DEMs provided a good estimate of slope values when grid resolution reflected the field measurement scale. Intermediate scale DEMs were most consistent with land survey techniques in delineating catchment boundaries. Upslope accumulated area was most sensitive to grid resolution, with intermediate resolutions producing a range of UAA values useful in soil and groundwater analysis. Numéro de notice : A2015-973 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.81.5.387 En ligne : https://doi.org/10.14358/PERS.81.5.387 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80043
in Photogrammetric Engineering & Remote Sensing, PERS > vol 81 n° 5 (May 2015) . - pp 387 - 396[article]Refining high spatial resolution remote sensing image segmentation for man-made objects through acollinear and ipsilateral neighborhood model / Min Wang in Photogrammetric Engineering & Remote Sensing, PERS, vol 81 n° 5 (May 2015)
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Titre : Refining high spatial resolution remote sensing image segmentation for man-made objects through acollinear and ipsilateral neighborhood model Type de document : Article/Communication Auteurs : Min Wang, Auteur ; Yanxia Sun, Auteur ; Guanyi Chen, Auteur Année de publication : 2015 Article en page(s) : pp 397 - 406 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse d'image orientée objet
[Termes IGN] détail topographique artificiel
[Termes IGN] détection d'objet
[Termes IGN] planimétrie
[Termes IGN] pouvoir de résolution géométrique
[Termes IGN] segmentation d'imageRésumé : (auteur) Man-made objects, such as buildings and roads, which are important targets for information extraction from high spatial resolution (HSR) remote sensing images, often feature straight boundaries. This study employs this knowledge on HSR image segmentation by embedding a straight-line constraint in regionbased image segmentation. A new concept called collinear and ipsilateral neighborhood is proposed and applied to hardboundary constraint-based image segmentation for accuracy improvement. In the experimental areas, the method accuracy measured by recall ratio r increases from 0.036 to 0.048 (on the average) after the refinement, with significantly smaller decreases in precision p that are all less than 0.006. In sum, the proposed technique effectively reduces over-segmentation errors and maintains the same level of under-segmentation error ratio, particularly in man-made areas. It facilitates subsequent objectbased image analyses, including feature extraction, object recognition, and classification. Numéro de notice : A2015-974 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : doi.org/10.14358/PERS.81.5.397 En ligne : https://doi.org/10.14358/PERS.81.5.397 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80044
in Photogrammetric Engineering & Remote Sensing, PERS > vol 81 n° 5 (May 2015) . - pp 397 - 406[article]Association-matrix-based sample consensus approach for automated registration of terrestrial laser scans using linear features / Kaleel Al-Durgham in Photogrammetric Engineering & Remote Sensing, PERS, vol 80 n° 11 (November 2014)
[article]
Titre : Association-matrix-based sample consensus approach for automated registration of terrestrial laser scans using linear features Type de document : Article/Communication Auteurs : Kaleel Al-Durgham, Auteur ; Ayman Habib, Auteur Année de publication : 2014 Article en page(s) : pp 1029 - 1039 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] appariement automatique
[Termes IGN] échantillonnage
[Termes IGN] ligne caractéristique
[Termes IGN] matrice
[Termes IGN] Ransac (algorithme)
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) This paper presents an approach for the automatic registration of terrestrial laser scans using linear features. The main contribution here is introducing a new matching strategy that uses an association matrix to store information about candidate matches of linear features. The motivation for this work is aiding the 3D modeling of industrial sites rich with pole-like features. The proposed matching strategy aims at establishing hypotheses about potential minimal watches of linear features that could be used for the estimation of the transformation parameters relating the scans; then, quantifying the agreement between the scans using the estimated transformation parameters. We combine the association matrix and the well-known RANSAC approach for the derivation of conjugate pairs among the two scans. Rather than randomly selecting the line pairs as in the RANSAC-based registration, the association matrix guides the process of selecting the candidate matches of linear features. Experiments are conducted using laser scanning data of an electrical substation to assess the performance of the proposed association-matrix-based sample consensus approach as it compares to the traditional RANSAC-based procedure. The association-matrix-based approach showed consistent tendency of bringing up the correct mutches first before the RANSAC-based registration. Numéro de notice : A2014-615 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.80.11.1029 En ligne : https://doi.org/10.14358/PERS.80.11.1029 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74921
in Photogrammetric Engineering & Remote Sensing, PERS > vol 80 n° 11 (November 2014) . - pp 1029 - 1039[article]Automated registration of dense terrestrial laser-scanning point clouds using curves / B. Yang in ISPRS Journal of photogrammetry and remote sensing, vol 95 (September 2014)
[article]
Titre : Automated registration of dense terrestrial laser-scanning point clouds using curves Type de document : Article/Communication Auteurs : B. Yang, Auteur ; Yufu Zang, Auteur Année de publication : 2014 Article en page(s) : pp 109 – 121 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] appariement de formes
[Termes IGN] ligne caractéristique
[Termes IGN] semis de points
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) This paper proposes an automatic method for registering terrestrial laser scans in terms of robustness and accuracy. The proposed method uses spatial curves as matching primitives to overcome the limitations of registration methods based on points, lines, or patches as primitives. These methods often have difficulty finding correspondences between the scanned point clouds of freeform surfaces (e.g., statues, cultural heritage). The proposed method first clusters visually prominent points selected according to their associated geometric curvatures to extract crest lines which describe the shape characteristics of point clouds. Second, a deformation energy model is proposed to measure the shape similarity of these crest lines to select the correct matching-curve pairs. Based on these pairs, good initial orientation parameters can be obtained, resulting in fine registration. Experiments were undertaken to evaluate the robustness and accuracy of the proposed method, demonstrating a reliable and stable solution for accurately registering complex scenes without good initial alignment. Numéro de notice : A2014-475 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2014.05.012 En ligne : https://doi.org/10.1016/j.isprsjprs.2014.05.012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74052
in ISPRS Journal of photogrammetry and remote sensing > vol 95 (September 2014) . - pp 109 – 121[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2014091 RAB Revue Centre de documentation En réserve L003 Disponible Context-based automatic reconstruction and texturing of 3D urban terrain for quick-response tasks / Dimitri Bolatov in ISPRS Journal of photogrammetry and remote sensing, vol 93 (July 2014)
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Titre : Context-based automatic reconstruction and texturing of 3D urban terrain for quick-response tasks Type de document : Article/Communication Auteurs : Dimitri Bolatov, Auteur ; Gisela Häufel, Auteur ; Jochen Meidow, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp. 157 - 170 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] détail topographique
[Termes IGN] reconstruction 3D
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] surface (géométrie)
[Termes IGN] texturageRésumé : (Auteur) Highly detailed 3D urban terrain models are the base for quick response tasks with indispensable human participation, e.g., disaster management. Thus, it is important to automate and accelerate the process of urban terrain modeling from sensor data such that the resulting 3D model is semantic, compact, recognizable, and easily usable for training and simulation purposes. To provide essential geometric attributes, buildings and trees must be identified among elevated objects in digital surface models. After building ground-plan estimation and roof details analysis, images from oblique airborne imagery are used to cover building faces with up-to-date texture thus achieving a better recognizability of the model. The three steps of the texturing procedure are sensor pose estimation, assessment of polygons projected into the images, and texture synthesis. Free geographic data, providing additional information about streets, forest areas, and other topographic object types, suppress false alarms and enrich the reconstruction results. Numéro de notice : A2014-334 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2014.02.016 En ligne : https://doi.org/10.1016/j.isprsjprs.2014.02.016 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73701
in ISPRS Journal of photogrammetry and remote sensing > vol 93 (July 2014) . - pp. 157 - 170[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2014071 RAB Revue Centre de documentation En réserve L003 Disponible La carte de Belleyme et le patrimoine rural proto-industriel / Rémy Durrens in Cartes & Géomatique, n° 220 (juin - août 2014)PermalinkPermalinkPermalinkNumérisation 3D de bâtiments / Raphaële Heno (2014)PermalinkRegarder autrement, documenter toujours ... / Christiane Blancot in Cahiers de l'Institut d'aménagement et d'urbanisme de la région Île-de-France, n° 166 (octobre 2013)PermalinkCrowdsourcing techniques for augmenting traditional accessibility maps with transitory obstacle information / Matthew T. Rice in Cartography and Geographic Information Science, vol 40 n° 3 (June 2013)PermalinkDécision cumulative pour la vision dynamique des systèmes / Samia Bouchafa in Revue Française de Photogrammétrie et de Télédétection, n° 202 (Avril 2013)PermalinkMulti-level representation of terrain features on a contour map / Eric Guilbert in Geoinformatica, vol 17 n° 2 (April 2013)PermalinkTopological gradient connection analysis for feature detection / Chao-Yuan Lo in Photogrammetric record, vol 28 n° 141 (March - May 2013)PermalinkSi Versailles m'était conté ... / Michel Ravelet in Géomètre, n° 2099 (janvier 2013)Permalink