A-
A
A+

L'information grandeur nature

Centre de documentation
scientifique

Actualité

L'actu ! fermeture automnale

Le centre de documentation est fermé pour les vacances de Toussaint. Les prêts sont suspendus pour le moment. Merci d'adresser vos questions à cdos at ensg.e...

Consulter les archives

dernière publication

Dernière publication Consultez les parutions du CDoS

Informations pratiques

Le centre de documentation scientifique
de l'Institut est aussi celui de l'ENSG-Géomatique.

Envoyez un mail au contact ci-dessous pour vos demandes.

Contact : cdos@ign.fr

Comment venir ?
Pour se rendre au centre de documentation, se reporter au 'Plan d'accès au bâtiment' tout en bas de page à droite. Le centre se trouve dans le bâtiment de l'ENSG. On y accède par le hall, entre l'aile Cassini et l'aile Laplace.

Mots RAMEAU représentant le fonds du centre de documentation
géomatique, géodésie, réseaux (géodésie), systèmes de localisation par satellites,
imagerie satellitaire, traitement d'images, photogrammétrie, lasergrammétrie,
systèmes d'information géographique, données géospatiales, cartographie,
géographie - base de données

Nouvelle recherche

Article: Article/Communication

Advanced studies in strip pair processing of Cartosat-1 data / P.K. Srivastava in Photogrammetric record, vol 23 n° 123 (September - November 2008)

URL article

Public

[article]
inPhotogrammetric record > vol 23 n° 123 (September - November 2008) . - pp 289 - 304

Titre :	Advanced studies in strip pair processing of Cartosat-1 data
Type de document :	Article/Communication
Auteurs :	P.K. Srivastava, Auteur ; T. Srinivasan, Auteur ; Amit Gupta, Auteur ; et al., Auteur
Année de publication :	2008
Conférence :	ISPRS 2007, High-Resolution Earth Imaging for Geospatial Information workshop 29/05/2007 01/06/2007 Hanovre Allemagne
Article en page(s) :	pp 289 - 304
Note générale :	Bibliographie
Langues :	Anglais (eng)
Descripteur :	[Vedettes matières IGN] Photogrammétrie spatiale [Termes IGN] compensation par bloc [Termes IGN] image Cartosat-1 [Termes IGN] modèle numérique de surface [Termes IGN] orthoimage [Termes IGN] point d'appui [Termes IGN] qualité d'image [Termes IGN] restauration d'image [Termes IGN] spatiotriangulation [Termes IGN] tâche image d'un point [Termes IGN] variabilité
Résumé :	(Auteur) With the launch of the Indian remote sensing satellite Cartosat-1, an along-track stereoscopic imaging mission of the Indian Space Research Organisation (ISRO), new possibilities for operational availability of high-resolution stereo-imagery from space for the remote sensing and cartography user communities have emerged. The high-resolution stereo data beamed from twin cameras on board the Cartosat-1 mission facilitates topographic mapping up to 1:25 000 scale. The primary advantage of the Cartosat-1 mission is seen in the generation of digital elevation models (DEMs) and the production of ortho-images in an operational set-up. This also facilitates 3D terrain visualisation for very large tracts of land. Stereo Strip Triangulation (SST) is a software system developed and perfected at the Space Applications Centre of ISRO for operational generation of secondary control and appropriate DEMs for subsequent use in the generation of ortho-images. This system has been in use for almost 2 years at the National Remote Sensing Agency in Hyderabad, India, and has generated a wealth of data for use in topographic mapping. An initiative to generate a database of seamless, homogeneous DEMs and associated ortho-image tiles at country level has been undertaken by ISRO. This data-set has been named CartoDEM. The Cartosat-1 data processing team has completed the design and testing of software for the generation of the CartoDEM. This software system has undergone detailed evaluation and currently is in the final stage of development of the operational procedures required to make maximum use of the capabilities of the Cartosat-1 sensors. A data dissemination software system is currently under development. As part of the large-scale evaluation exercises to finalise the specifications of CartoDEM, it is established that with the 2·5 m ground resolution, a base-to-height ratio of 0·62 and with capability to register conjugate points in the stereopair to sub-pixel level, DEMs can be generated at 0·3 arc second intervals, with a height accuracy of 3 to 4 m, over tracts of undulating land mass up to 15 000 km2 with the use of 10 to 20 ground control points. The Cartosat-1 data processing and evaluation team regularly monitors the radiometric quality of images. As part of the radiometric characterisation of sensors, the team computed point spread functions (PSFs) for the two cameras of Cartosat-1. Special filters based on the PSFs then work to improve the radiometric quality of the images. Initial results from these exercises show good promise in image restoration based on PSFs for Cartosat-1. This paper presents a summary of activities and exercises related to (i) Stereo Strip Triangulation, (ii) CartoDEM, (iii) image quality improvement using the PSF-based image restoration and (iv) block adjustment exercises using a COTS software package. Also reported are the results of post-launch experiments, study and evaluation of DEMs vis-à-vis ortho-images from Cartosat-1. Copyright RS&PS + Blackwell Publishing
Numéro de notice :	A2008-394
Affiliation des auteurs :	non IGN
Thématique :	IMAGERIE
Nature :	Article
DOI :	10.1111/j.1477-9730.2008.00491.x
En ligne :	https://doi.org/10.1111/j.1477-9730.2008.00491.x
Format de la ressource électronique :	URL article
Permalink :	https://documentation.ensg.eu/index.php?lvl=notice_display&id=29387

vignette

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
106-08031	RAB	Revue	Centre de documentation	En réserve L003	Disponible

IGN

IGN / ENSG

Centre de documentation
scientifique
6 et 8 Avenue Blaise Pascal
Cité Descartes
Champs-sur-Marne
77455 Marne la Vallée
Cedex 2
L'IGN a pour vocation

de décrire la surface du territoire national et l'occupation de son sol, et d'élaborer et de mettre à jour l'inventaire permanent des ressources forestières nationales.
Accès directs
2014 -2024 IGN