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Evaluation of resolving power and MTF of DMC / Eija Honkavaara in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)
[article]
Titre : Evaluation of resolving power and MTF of DMC Type de document : Article/Communication Auteurs : Eija Honkavaara, Auteur ; Juha Jaakkola, Auteur ; et al., Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 17 - 22 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] chambre à grand format
[Termes IGN] distorsion d'image
[Termes IGN] DMC
[Termes IGN] fonction de transfert de modulation
[Termes IGN] image panchromatique
[Termes IGN] instrumentation Z/I Imaging
[Termes IGN] pas d'échantillonnage au sol
[Termes IGN] pouvoir de résolution géométriqueRésumé : (Auteur) The present article reports the results of an extensive empirical evaluation of spatial resolution of a digital large format Intergraph DMC sensor. The parameters of the study were flight direction, ground sample distance (GSD) and the distance from the image center. The key finding of the study was that the resolution of the DMC panchromatic large-format image was clearly dependent on the distance from the image center. One reason for this behavior is that the DMC large-format image is composed of four oblique images; the resolution of the oblique images is reduced towards the image border due to the scale reduction and projective distortion. From the image pixel size of 12 um of DMC, a nominal resolving power value (RP) 84 lines/mm can be derived. Maximal resolution reduction factors in the image comers, caused by the image tilt, were 1.6 in the cross-flight direction and 1.4 in the flight direction. The distance from the image center did not appear to affect the resolution of the low-resolution multi-spectral images looking towards nadir. The observed MTFs indicated attractive behavior. The A WAR values of the panchromatic images were between 61 and 71 lines/mm, which is 1.2-1.4 times the nominal RP-value. Other important findings were the effects of GSD and flight direction on the resolution; these properties evidently characterize the behavior of the entire photogrammetric system tested. The image restoration by a linear restoring finite impulse response filter provided a constant resolution improvement factor of 1.4. Copyright SFPT Numéro de notice : A2006-626 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS3-39.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28349
in Revue Française de Photogrammétrie et de Télédétection > n° 183 (Septembre 2006) . - pp 17 - 22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06031 RAB Revue Centre de documentation En réserve L003 Disponible Image restoration for resolution improvement of digital aerial images: a comparison of large format digital cameras / S. Becker in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)
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Titre : Image restoration for resolution improvement of digital aerial images: a comparison of large format digital cameras Type de document : Article/Communication Auteurs : S. Becker, Auteur ; Norbert Haala, Auteur ; et al., Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 5 - 10 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] accentuation de contours
[Termes IGN] ADS40
[Termes IGN] analyse comparative
[Termes IGN] caméra numérique
[Termes IGN] chambre à grand format
[Termes IGN] cohérence des couleurs
[Termes IGN] DMC
[Termes IGN] image aérienne
[Termes IGN] image numérique
[Termes IGN] instrumentation Z/I Imaging
[Termes IGN] pansharpening (fusion d'images)
[Termes IGN] restauration d'image
[Termes IGN] tâche image d'un point
[Termes IGN] UltraCamRésumé : (Auteur) Within the paper a comparative quantification of the spatial image resolution for large-format digital airborne cameras will be presented. For this purpose, imagery of the Leica ADS40, the Intergraph Z/I-imaging DMC and the Vexcel UltraCamD were examined. The respective spatial resolutions are represented by means of the point spread function, which can be measured easily and reliably at image edges. Thus, images of test patterns like a Siemens star were used. In addition to the evaluation of the original images as they are provided by the camera systems, the potential benefit of a resolution improvement by image restoration is demonstrated. Therefore, a linear restoring finite impulse response filter is applied. Usually, colour image acquisition by digital aerial camera systems is realised by combining data from the multi-spectral module with higher resolution panchromatic imagery. The quality of this pan-sharpening process is presented in the final part of the paper. For this purpose, the potential degradation of colour information by this process was quantified for the three tested camera systems in addition to the resolution measurements. Copyright SFPT Numéro de notice : A2006-625 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T01-03.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28348
in Revue Française de Photogrammétrie et de Télédétection > n° 183 (Septembre 2006) . - pp 5 - 10[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06031 RAB Revue Centre de documentation En réserve L003 Disponible Is there an ideal digital aerial camera? / Jean-Philippe Souchon in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)
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contenu dans ISPRS Commission 1 Symposium 2006, Paris, Marne-la-Vallée, 3-6 Juillet 2006: Des capteurs à l'imagerie, vol 1. Proceedings / Alain Baudoin (2006)
Titre : Is there an ideal digital aerial camera? Type de document : Article/Communication Auteurs : Jean-Philippe Souchon , Auteur ; Olivier Martin , Auteur ; Nicolas Paparoditis , Auteur ; et al., Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 29 - 34 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] analyse comparative
[Termes IGN] caméra numérique
[Termes IGN] chambre à grand format
[Termes IGN] DMC
[Termes IGN] instrumentation IGN
[Termes IGN] UltraCamRésumé : (Auteur) The IGN digital camera project was set up in the early 90's and the first research surveys were carried out in 1996. The digital camera was first used in production in 2000 when the DMC and ADS40 systems appeared on the market at the beginning of the 21st century. Since then, two medium format systems (Applanix DSS322 and DiMAC system) and a third large-format system (Vexcel UltraCamD) appeared on the surveying market. Today, IGN's system could appear very underperforming in terms of possible swaths and frame rates compared with the ones offered by large format cameras ; and parts of our electronics have become obsolete. This is the reason why we recently reanalyzed the needs of IGN in term of digital imagery and confronted them to the main characteristics and capabilities of the different existing commercial systems. Considering that Bayer acquisition without a coupled panchromatic acquisition does not allow an image reconstruction of good quality and considering that an acquisition system based on CCD area sensors must be equipped with a Forward Motion Compensation (FMC) able to compensate dozens of pixels, we only focused on the three large-format systems that are : Intergraph's DMC, Vexcel's UltracamD, and Leica Geosystems' ADS40. Each of these three systems has its pros and cons and no one seems to bring an answer to all our needs. Copyright SFPT Numéro de notice : A2006-628 Affiliation des auteurs : LOEMI (1985-2011) Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS3-45.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28351
in Revue Française de Photogrammétrie et de Télédétection > n° 183 (Septembre 2006) . - pp 29 - 34[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-06031 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
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Is there an ideal... - pdf éditeur ISPRSAdobe Acrobat PDF Further advances in airborne digital imaging: several new imagers introduced at ASPRS / Gordon Petrie in Geoinformatics, vol 9 n° 5 (01/07/2006)
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Titre : Further advances in airborne digital imaging: several new imagers introduced at ASPRS Type de document : Article/Communication Auteurs : Gordon Petrie, Auteur Année de publication : 2006 Conférence : ASPRS 2006, annual convention 01/05/2006 05/05/2006 Reno Nevada - Etats-Unis OA ISPRS Archives Article en page(s) : pp 16 - 23 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] caméra numérique
[Termes IGN] capteur aérien
[Termes IGN] capteur en peigne
[Termes IGN] chambre à grand format
[Termes IGN] chambre DTC
[Termes IGN] image obliqueRésumé : (Auteur) The 2006 edition of the ASPRS Annual Conference was held in Reno, Nevada between 1st and 5th may and attracted 1350 participants. As usual they were offered the first-class technical exhibition that we have come to expect at this meeting. Almost all the major system suppliers and software houses were present, as were several of the main commercial providers of mapping services in North America. Besides which, all the major U.S. government agencies concerned with mapping (USGS, NOAA, NIMA, EPA, NASA) had interesting displays. However a special feature of this year's technical exhibition was the introduction of a number of new airborne digital frame cameras based on the latest generation of larger-format CCD area arrays that have been released by the manufacturers over the last half-year or so. These arrays provide a substantial increase in performance, especially in terms of the ground coverage and resolution that can be achieved within an individual frame image. Besides these important products, the exhibition also saw the launch of a new airborne multiple camera system and a new airborne pushbroom scanner, both designed to acquire oblique digital imagery. Yet another introduction was that of a new model of an airborne laser scanner. On the DPW front, the exhibition saw the introduction of a number of stereo-displays, including an example of an auto-stereoscopic system, as well as numerous enhancements to DPW software. Numéro de notice : A2006-314 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28038
in Geoinformatics > vol 9 n° 5 (01/07/2006) . - pp 16 - 23[article]Gigapixel frame images: is the holy grail of airborne digital frame imaging in sight? (Part 2) / Gordon Petrie in Geoinformatics, vol 9 n° 2 (01/03/2006)
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Titre : Gigapixel frame images: is the holy grail of airborne digital frame imaging in sight? (Part 2) Type de document : Article/Communication Auteurs : Gordon Petrie, Auteur Année de publication : 2006 Article en page(s) : pp 24 - 29 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] astronomie fondamentale
[Termes IGN] chambre à grand format
[Termes IGN] détecteur à transfert de charge
[Termes IGN] détecteur CMOS
[Termes IGN] image aérienne
[Termes IGN] image gigapixel
[Termes IGN] image numérique
[Termes IGN] téléscope électroniqueRésumé : (Auteur) In the Gigapixel article in Geolnformatics 1-2006, the various methods that have been devised to general Gigapixel frame images in the area of amateur and professional photography have been outlined. In this article, a review will be undertaken of the methods being used by scientific astronomers to general large-format digital frame images that are Gigapixel in size. These appear to have much more relevance to satisfy the current needs of the photogrammetric and remote sensing communities for the direct acquisition of larger-format frame images from airborne platforms. Numéro de notice : A2006-104 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27831
in Geoinformatics > vol 9 n° 2 (01/03/2006) . - pp 24 - 29[article]Voir aussiRéservation
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Code-barres Cote Support Localisation Section Disponibilité 262-06021 SL Revue Centre de documentation Revues en salle Disponible Stability analysis of low-cost digital cameras for aerial mapping using different georeferencing techniques / A. Habib in Photogrammetric record, vol 21 n° 113 (March - May 2006)PermalinkGigapixel frame images: is the holy grail of airborne digital frame imaging in sight? (Part 1) / Gordon Petrie in Geoinformatics, vol 9 n° 1 (01/01/2006)PermalinkADS40 Large-scale digital camera (Bulletin de Géomatique suisse)PermalinkBias-compensated RPCs [rational polynomial coefficient] for sensor orientation of high-resolution satellite imagery / Clive Simpson Fraser in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 8 (August 2005)PermalinkA multi-sensor technology for transmission line surveys: Lidar and medium-format digital imaging / F. Artes in Geoinformatics, vol 8 n° 4 (01/06/2005)PermalinkVexcel ultracam D in operation: survey workflow with aerial digital camera / F. Hagman in GIM international, vol 19 n° 5 (May 2005)PermalinkAerial digital cameras for all GIS needs: DiMAC systems / J. Losseau in GIM international, vol 19 n° 1 (January 2005)PermalinkDeveloping a true ortho technique using a digital mapping camera / K. Yamada in Geoinformatics, vol 7 n° 8 (01/12/2004)PermalinkLe contrôle des instruments géodésiques / Rudolf Staiger in XYZ, n° 99 (juin - août 2004)PermalinkIstanbul ahoy! The ISPRS congress beckons: with imaging to the fore! / Gordon Petrie in Geoinformatics, vol 7 n° 4 (01/06/2004)Permalink