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Testing aerial digital cameras / R. Kathofer in GIM international, vol 24 n° 1 (January 2010)
[article]
Titre : Testing aerial digital cameras Type de document : Article/Communication Auteurs : R. Kathofer, Auteur Année de publication : 2010 Article en page(s) : pp 23 - 25 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] caméra numérique
[Termes IGN] image aérienne
[Termes IGN] pas d'échantillonnage au sol
[Termes IGN] photographie numérique
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] prise de vue aérienne
[Termes IGN] UltraCamRésumé : (Auteur) Aerial imaging for mapping purpose is increasingly done using digital cameras. The introducing of new models brings a steady rise in pixel volume, enabling swath width and thus reduction flight line, flight costs and project risks, or data acquisition with larger ground-sample distances (GSD), preserving efficiency. Full exploitation of larger GSD depends on geometrical accuracy, dynamic range, image sharpness and storage device. The author tested these four features of two Ultracam systems : the Xp and L. Copyright Reed Business Numéro de notice : A2009-503 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30132
in GIM international > vol 24 n° 1 (January 2010) . - pp 23 - 25[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-2010011 SL Revue Centre de documentation Revues en salle Disponible Comparative geometric and radiometric evaluation of mobile phone and still video cameras / Devrim Akca in Photogrammetric record, vol 24 n° 127 (September - November 2009)
[article]
Titre : Comparative geometric and radiometric evaluation of mobile phone and still video cameras Type de document : Article/Communication Auteurs : Devrim Akca, Auteur ; Armin W. Gruen, Auteur Année de publication : 2009 Article en page(s) : pp 217 - 245 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] analyse comparative
[Termes IGN] auto-étalonnage
[Termes IGN] bruit (théorie du signal)
[Termes IGN] caméra vidéo
[Termes IGN] fonction de transfert de modulation
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] précision radiométrique
[Termes IGN] téléphonie mobileRésumé : (Auteur) This paper examines the potential of mobile phones to be used as front-end sensors for photogrammetric procedures and applications. For this purpose, two mobile phone cameras (Sony Ericsson K750i and Nokia N93) were calibrated over an indoor 3D testfield, using a self-calibrating bundle adjustment. Geometric accuracy tests were carried out in order to evaluate their metric performances and to compare the results with respect to two off-the-shelf digital still video cameras (Sony DSC W100 and Sony DSC F828). The geometric accuracy evaluation comprised an absolute accuracy test, JPEG test and temporal stability test. The radiometric capabilities of all cameras (except that the DSC W100 was replaced with a DSC T100 camera) were also evaluated and compared by carrying out modulation transfer function (MTF) analysis, image noise analysis and an operating range test. Substantial systematic errors were diagnosed in some systems. However, with proper calibration it is believed that these devices can be used for many photogrammetric tasks. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2009-327 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2009.00541.x En ligne : https://doi.org/10.1111/j.1477-9730.2009.00541.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29957
in Photogrammetric record > vol 24 n° 127 (September - November 2009) . - pp 217 - 245[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-09031 RAB Revue Centre de documentation En réserve L003 Disponible Testing measurement accuracy in oblique photography using Pixo View technology / J. Sukup in Geoinformatics, vol 12 n° 5 (01/07/2009)
[article]
Titre : Testing measurement accuracy in oblique photography using Pixo View technology Type de document : Article/Communication Auteurs : J. Sukup, Auteur ; Philip Meixner, Auteur ; K. Sukup, Auteur Année de publication : 2009 Article en page(s) : pp 36 - 40 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] photographie aérienne oblique
[Termes IGN] photographie numérique
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) With an increase in applications relating to the use of oblique photography, there is now a demand to determine what degree of accuracy can be achieved with oblique photography single-picture measurements in the PixoView application. Copyright GEOinformatics Numéro de notice : A2009-281 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29911
in Geoinformatics > vol 12 n° 5 (01/07/2009) . - pp 36 - 40[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-09051 SL Revue Centre de documentation Revues en salle Disponible vol 64 n° 3 - May - June 2009 - Image analysis and image engineering in close range photogrammetry (Bulletin de ISPRS Journal of photogrammetry and remote sensing) / Hans-Gerd MaasContient
- Close-range constrained image sequences / Juha Heikkinen in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 3 (May - June 2009)
- Crack measurement : development, testing and applications of an automatic image-based algorithm / L. Barazetti in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 3 (May - June 2009)
- An image engineering system for the inspection of transparent construction materials / Stefan Hinz in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 3 (May - June 2009)
- A hybrid measurement approach for close-range photogrammetry / Clive Simpson Fraser in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 3 (May - June 2009)
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Code-barres Cote Support Localisation Section Disponibilité 081-09031 SL Revue Centre de documentation Revues en salle Disponible DMC geometry analysis and virtual image characterisation / R. Alamus in Photogrammetric record, vol 23 n° 124 (December 2008 - February 2009)
[article]
Titre : DMC geometry analysis and virtual image characterisation Type de document : Article/Communication Auteurs : R. Alamus, Auteur ; W. Kornus, 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 353 - 371 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] aérotriangulation automatisée
[Termes IGN] auto-étalonnage
[Termes IGN] chambre à grand format
[Termes IGN] compensation par faisceaux
[Termes IGN] DMC
[Termes IGN] erreur systématique
[Termes IGN] espace image
[Termes IGN] géométrie de l'image
[Termes IGN] géoréférencement
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] points homologues
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] rapport base hauteur
[Termes IGN] résiduRésumé : (Auteur) Since the advent of the first large format digital aerial cameras, high expectations have been placed on their performance. The dream of obtaining aerial images virtually free of geometric errors and with greater radiometric quality is getting close. Nevertheless, systematic image residuals, unexpected height errors in aerial triangulation and the need for additional self-calibration parameters have been reported since 2005. In this paper a preliminary analysis of the theoretical accuracies in aerial triangulation using the Zeiss/Intergraph (Z/I) Digital Mapping Camera (DMC) and an analogue camera is conducted, motivated by those recent reports. This analysis considers a mathematical model where the image has conical geometry and is free of systematic errors. The influence on the propagated block accuracy of the base-to-height ratio, image pointing precision (both manual and automatic), GPS observations for projection centres and of pass/tie point density is studied. Moreover, the expected accuracy in the aerial triangulation of analogue images using current procedures (having regard to the a priori accuracy for image pointing, ground control measurement and GPS and pass/tie point density) is computed. The goal of this theoretical study is to find the requirements for aerial triangulation with DMC data which would yield the same or an even higher level of accuracy than that obtained with analogue data under the same conditions. The paper continues with a check on the conclusions of this theoretical analysis, using real data-sets and aerial triangulation set-up, which fit with the theoretical analysis. The results prove that the expected theoretical accuracy in aerial triangulation is only obtained if an appropriate self-calibration parameter set is considered in the bundle block adjustment and/or if good GPS observations are available. These requirements result from the unfavourable propagation from unmodelled systematic error in the DMC image blocks. Some authors have detected systematic residuals in the order of one-tenth of a pixel rms in DMC image space. For this reason, investigations are being carried out on systematic error characterisation, distribution in image space and stability over time and flying height, and systematic error modelling, using self-calibration parameter sets and applying correction grids. Finally, conclusions are drawn from the investigations. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2008-417 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2008.00504.x En ligne : https://doi.org/10.1111/j.1477-9730.2008.00504.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29488
in Photogrammetric record > vol 23 n° 124 (December 2008 - February 2009) . - pp 353 - 371[article]Analysis of Cartosat-1 images regarding image quality, 3D point measurement and DSM generation / Emmanuel P. Baltsavias in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkPotential accuracy of image orientation of small satellites: a case study of CHRIS/Proba data / Ahmed Shaker in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkAdjustability and error propagation for true replacement sensor models / C. Puatanachokchai in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 3 (May - June 2008)PermalinkPer-pixel classification of high spatial resolution satellite imagery for urban land-cover mapping / D. Hester in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 4 (April 2008)PermalinkReducing edge effects in the classification of high resolution imagery / Guiyun Zhou in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 4 (April 2008)PermalinkInvestigations of high precision terrestrial laser scanning with emphasis on the development of a robust close-range 3D-laser scanning system / Hans Martin Zogg (2008)PermalinkGeometric accuracy assessment of QuickBird basic imagery using different operational approaches / M. Aguilar in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 12 (December 2007)PermalinkIntegration of Ikonos and Quickbird imagery for geopositioning accuracy analysis / R. Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 9 (September 2007)PermalinkGeometric consistency and stability of consumer-grade digital cameras for accurate spatial measurement / R. Wackrow in Photogrammetric record, vol 22 n° 118 (June - August 2007)Permalinkn° 186 - Juin 2007 - Atelier REGLIS : LIDAR et surfaces continentales : techniques, applications et perspectives, Montpellier, 7 et 8 décembre 2006 (Bulletin de Revue Française de Photogrammétrie et de Télédétection) / C. PuechPermalink