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Improvement of photogrammetric accuracy by modeling and correcting the thermal effect on camera calibration / Mehdi Daakir in ISPRS Journal of photogrammetry and remote sensing, vol 148 (February 2019)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 148 (February 2019) . - pp 142 - 156 Titre : Improvement of photogrammetric accuracy by modeling and correcting the thermal effect on camera calibration Type de document : Article/Communication Auteurs : Mehdi Daakir, Auteur ; Yilin Zhou, Auteur ; Marc Pierrot-Deseilligny , Auteur ; Christian Thom , Auteur ; Olivier Martin , Auteur ; Ewelina Rupnik , Auteur Année de publication : 2019 Projets : 1-Pas de projet / Article en page(s) : pp 142 - 156 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes descripteurs IGN] CamLight [Termes descripteurs IGN] déformation d'image [Termes descripteurs IGN] détecteur CMOS [Termes descripteurs IGN] effet thermique [Termes descripteurs IGN] étalonnage de capteur (imagerie) [Termes descripteurs IGN] image de drone [Termes descripteurs IGN] modèle géométrique de prise de vue [Termes descripteurs IGN] photogrammétrie métrologique Résumé : (Auteur) This paper presents a new method for improving the geometric accuracy of photogrammetric reconstruction by modeling and correcting the thermal effect on camera image sensor. The objective is to verify that when the temperature of image sensor varies during the acquisition, image deformation induced by the temperature change is quantifiable, modelisable and correctable. A temperature sensor integrated in the camera enables the measurement of image sensor temperature at exposure. It is therefore natural and appropriate to take this effect into account and to finally model and correct it after a calibration step. Nowadays, in cartography applications performed with UAV, the frame rate of acquisitions is continuously increasing. A high frame rate over a long acquisition time can result in an important temperature increase of the image sensor and thus introduces image deformations. The correction of the above-mentioned effect can improve the measurement accuracy. We present three methods to calibrate the thermal effect and experiments on two datasets are carried out to verify the improvement in terms of the photogrammetric accuracy. Numéro de notice : A2019-072 Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2018.12.012 date de publication en ligne : 04/01/2019 En ligne : https://doi.org/10.1016/j.isprsjprs.2018.12.012 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92159 [article]

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Analysis on the dynamic deformations of the images from digital film sequences / Tomasz Markowski in Geodesy and cartography, vol 64 n° 1 (June 2015)  

Public [article]  inGeodesy and cartography > vol 64 n° 1 (June 2015) . - pp 43 - 64 Titre : Analysis on the dynamic deformations of the images from digital film sequences Type de document : Article/Communication Auteurs : Tomasz Markowski, Auteur Année de publication : 2015 Article en page(s) : pp 43 - 64 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes descripteurs IGN] caméra vidéo numérique [Termes descripteurs IGN] chambre non métrique [Termes descripteurs IGN] déformation d'image [Termes descripteurs IGN] distorsion d'image [Termes descripteurs IGN] étalonnage de capteur (imagerie) [Termes descripteurs IGN] image vidéo [Termes descripteurs IGN] séquence d'images Résumé : (auteur) Image sequences, in particular digital video sequences, are characterised by the features which result in their high potential as measurement data. However, as early as at the stage of visual assessment of digital film images, originating, in particular, from amateur cameras, occurrence of some deformations may be observed, which may highly influence the results of measurements performed using these images; such deformations differ from deformations occurred in the case of static photographic images. It results both, by the method of image recording, using an electronic shutter and interlaced or progressive scanning, as well as the method of file recording and compression. It is worth to notice the systematic nature of such deformations, which highly depend on mutual motions of a camera and recorded objects. The objective of presented research works was to develop the mathematical description of image deformations, as a function of motion parameters. This would allow for adaptation of the camera calibration process to the demands of sequential imaging, as well as for modification of algorithms of measurements using self-calibration, and, as a result, minimisation of deformations. Another objective was to analyse the influence of deformations, typical for digital film images, on the results of measurements performed using these images, by means of series of experiments, which were based on multiple calibration of static and a moving camera, also with the use of a spatial test field. The first part was made by developing formulas based on some geometric relations, using some simplifications. On the stage of experimental research a certain degree of compatibility of experimental results and theoretical assumptions were confirmed. Numéro de notice : A2015-262 Thématique : IMAGERIE Nature : Article En ligne : http://www.degruyter.com/view/j/geocart.2014.64.issue-1/geocart-2015-0005/geocar [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76310 [article]

Registration and visualisation of deformation maps from terrestrial radar interferometry using photogrammetry and structure from motion / Rafael Caduff in Photogrammetric record, vol 29 n° 146 (June - August 2014)

Public [article]  inPhotogrammetric record > vol 29 n° 146 (June - August 2014) . - pp 167 - 186 Titre : Registration and visualisation of deformation maps from terrestrial radar interferometry using photogrammetry and structure from motion Type de document : Article/Communication Auteurs : Rafael Caduff, Auteur ; Dirk Rieke-Zapp, Auteur Année de publication : 2014 Article en page(s) : pp 167 - 186 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes descripteurs IGN] analyse comparative [Termes descripteurs IGN] chambre de prise de vue numérique [Termes descripteurs IGN] chambre métrique [Termes descripteurs IGN] déformation d'image [Termes descripteurs IGN] image terrestre [Termes descripteurs IGN] interférométrie radar terrestre [Termes descripteurs IGN] photogrammétrie numérique [Termes descripteurs IGN] propagation d'erreur [Termes descripteurs IGN] recalage d'image [Termes descripteurs IGN] semis de points Résumé : (Auteur) This paper describes a general workflow for the registration of terrestrial radar interferometric data with 3D point clouds derived from terrestrial photogrammetry and structure from motion. After the determination of intrinsic and extrinsic orientation parameters, data obtained by terrestrial radar interferometry were projected on point clouds and then on the initial photographs. Visualisation of slope deformation measurements on photographs provides an easily understandable and distributable information product, especially of inaccessible target areas such as steep rock walls or in rockfall run-out zones. The suitability and error propagation of the referencing steps and final visualisation of four approaches are compared: (a) the classic approach using a metric camera and stereo-image photogrammetry; (b) images acquired with a metric camera, automatically processed using structure from motion; (c) images acquired with a digital compact camera, processed with structure from motion; and (d) a markerless approach, using images acquired with a digital compact camera using structure from motion without artificial ground control points. The usability of the completely markerless approach for the visualisation of high-resolution radar interferometry assists the production of visualisation products for interpretation. Numéro de notice : A2014-279 Thématique : IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33182 [article]

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Correlation analysis of camera self-calibration in close range photogrammetry / Rongfu Tang in Photogrammetric record, vol 28 n° 141 (March - May 2013)

Public [article]  inPhotogrammetric record > vol 28 n° 141 (March - May 2013) . - pp 86 - 95 Titre : Correlation analysis of camera self-calibration in close range photogrammetry Type de document : Article/Communication Auteurs : Rongfu Tang, Auteur ; Dieter Fritsch, Auteur Année de publication : 2013 Article en page(s) : pp 86 - 95 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes descripteurs IGN] autoétalonnage [Termes descripteurs IGN] corrélation [Termes descripteurs IGN] déformation d'image [Termes descripteurs IGN] étalonnage de chambre métrique [Termes descripteurs IGN] photogrammétrie métrologique Résumé : (Auteur) While the Brown self-calibration model has been widely used in close range photogrammetry for over 40 years, the negative effects of the well-known high correlations between parameters are not clear. This paper presents a novel view and study of these correlations, which are shown to be inherent in the Brown model due to its polynomial nature; they occur exactly as with additional parameters in aerial photogrammetry. Although it has high correlations with the decentring distortion parameters, the principal point can be located precisely (up to a few pixels) in self-calibration with an appropriate image configuration. An alternative model of the in-plane distortion is proposed, which helps to reduce the correlation with principal distance. Numéro de notice : A2013-153 Thématique : IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32291 [article]

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Review of geometric and radiometric analyses of paintings / Fabio Remondino in Photogrammetric record, vol 26 n° 136 (December 2011 - February 2012)  

Public [article]  inPhotogrammetric record > vol 26 n° 136 (December 2011 - February 2012) . - pp 439 - 461 Titre : Review of geometric and radiometric analyses of paintings Type de document : Article/Communication Auteurs : Fabio Remondino, Auteur ; Luigi Barazzetti, Auteur ; M. Scaioni, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 439 - 461 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes descripteurs IGN] capteur actif [Termes descripteurs IGN] déformation d'image [Termes descripteurs IGN] image multibande [Termes descripteurs IGN] patrimoine culturel [Termes descripteurs IGN] patrimoine mobilier [Termes descripteurs IGN] peinture [Termes descripteurs IGN] photogrammétrie terrestre [Termes descripteurs IGN] qualité radiométrique (image) [Termes descripteurs IGN] restitution [Termes descripteurs IGN] surveillance [Termes descripteurs IGN] télémétrie laser terrestre [Termes descripteurs IGN] valeur radiométrique Résumé : (Auteur) This paper presents an overview of a number of diagnostic campaigns carried out to assess the conservation state of paintings. The specific characteristics required in cultural heritage applications have been investigated and are reported, where two main fields are considered: radiometric analyses using multispectral images and 3D surveying for geometric deformation analysis by means of photogrammetry and laser scanning. The activities described were accomplished in interdisciplinary teams, composed of photogrammetrists, art-historians, restorers and experts of non-destructive diagnostic techniques. Numéro de notice : A2011-496 Thématique : IMAGERIE Nature : Article En ligne : http://dx.doi.org/10.1111/j.1477-9730.2011.00664.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31390 [article]

Persistent scatterer interferometry : potential, limits and initial C- and X-band comparison / M. Crosetto in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 9 (September 2010)  

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Adjustability 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)

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Wavelet based image fusion techniques: an introduction, review and comparison / Krista Amolins in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 4 (September 2007)

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Warping techniques: a new tool for cartographic generalisation ? / Eric Grosso (2005)

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Precise DEM extraction from drone images / F. Maatouk (2004)

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True ortho-image production for forested areas from large-scale aerial photographs / Y. Sheng in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 3 (March 2003)

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Évaluation des performances métrologiques de systèmes de mesure de déplacements - déformations par vision artificielle / Sébastien Janel (2003)

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Updating solutions of the rational function model using additional control information / Y. Hu in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 7 (July 2002)

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Modélisation fonctionnelle et topologique pour la vision par ordinateur / Jocelyn Marchadier (2002) 

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Exploitation d'images radar multi-dates et multi-sources dans un SIG / Aline Cakar (2000)

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