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Automatic camera calibration in close range photogrammetry / Clive Simpson Fraser in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 4 (April 2013)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 79 n° 4 (April 2013) . - pp 381 - 388 Titre : Automatic camera calibration in close range photogrammetry Type de document : Article/Communication Auteurs : Clive Simpson Fraser, Auteur Année de publication : 2013 Article en page(s) : pp 381 - 388 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] aberration chromatique [Termes IGN] auto-étalonnage [Termes IGN] caméra numérique [Termes IGN] chambre métrique [Termes IGN] espace objet [Termes IGN] étalonnage de chambre métrique [Termes IGN] longueur focale [Termes IGN] orientation interne [Termes IGN] photogrammétrie métrologique Résumé : (Auteur) Automatic camera calibration using self-calibration with the aid of coded targets is now very much the norm in close-range photogrammetry. This is irrespective of whether the cameras to be calibrated are high-end metric, or the digital SLRs and consumer-grade models that are increasingly being employed for image-based 3D measurement. Automation has greatly simplified the calibration task, but there are real prospects that important camera calibration issues may be overlooked in what has become an almost black-box operation. This paper discusses the impact of a number of such issues, some of which relate to the functional model adopted for self-calibration, and others to practical aspects which need to be taken into account when pursuing optimal calibration accuracy and integrity. Issues discussed include interior orientation stability, calibration reliability, focal plane distortion, image point distribution, variation in lens distortion with image scale, color imagery and chromatic aberration, and whether 3D object space control is warranted. By appreciating and accounting for these issues, users of automatic camera calibration will enhance the prospect of achieving an optimal recovery of scene-independent camera calibration parameters. Numéro de notice : A2013-207 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.79.4.381 En ligne : https://doi.org/10.14358/PERS.79.4.381 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32345 [article]

Accuracy assessment of commercial self-calibrating bundle adjustment routines applied to archival aerial photography / Manuel Angel Aguilar in Photogrammetric record, vol 28 n° 141 (March - May 2013)  

Public [article]  inPhotogrammetric record > vol 28 n° 141 (March - May 2013) . - pp 96 - 114 Titre : Accuracy assessment of commercial self-calibrating bundle adjustment routines applied to archival aerial photography Type de document : Article/Communication Auteurs : Manuel Angel Aguilar, Auteur ; Fernando José Aguilar, Auteur ; Ismael Fernadez, Auteur Année de publication : 2013 Article en page(s) : pp 96 - 114 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie [Termes IGN] archives [Termes IGN] auto-étalonnage [Termes IGN] compensation par faisceaux [Termes IGN] erreur systématique [Termes IGN] estimation de précision [Termes IGN] image aérienne [Termes IGN] Leica Photogrammetry Suite Résumé : (Auteur) The use of archival or historical photography for photogrammetric purposes often involves a lack of data concerning the aerial cameras employed, difficulties in identifying control points on the photos and inappropriate conservation of the photography. When camera calibration parameters are unknown, they should be estimated by means of a self-calibrating bundle adjustment. Several calibration models available in the Leica Photogrammetry Suite software have been tested on two archival datasets, captured in 1956 and 1977, covering the same working area. The accuracy of the dataset triangulation was found to depend significantly on the self-calibration method and the number of ground control points used; when the latter ranged from six to nine per stereopair, self-calibrating bundle adjustment techniques were found to slightly, but not always significantly, improve the photogrammetric capability of archival aerial photography. Thus, the adoption of self-calibration cannot guarantee the improvement of results when working on poorly conserved imagery. Results from such datasets are very dependent on numerous local variables which cannot be extrapolated to other areas for the same camera since each dataset is unique and may present systematic errors of a different nature. Numéro de notice : A2013-154 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12009 Date de publication en ligne : 17/12/2012 En ligne : https://doi.org/10.1111/phor.12009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32292 [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 IGN] auto-étalonnage [Termes IGN] corrélation [Termes IGN] déformation d'image [Termes IGN] étalonnage de chambre métrique [Termes 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 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12009 Date de publication en ligne : 27/03/2013 En ligne : https://doi.org/10.1111/phor.12009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32291 [article]

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106-2013011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Inner constraints for planar features / Derek D. Lichti in Photogrammetric record, vol 28 n° 141 (March - May 2013)  

Public [article]  inPhotogrammetric record > vol 28 n° 141 (March - May 2013) . - pp 74 - 85 Titre : Inner constraints for planar features Type de document : Article/Communication Auteurs : Derek D. Lichti, Auteur ; Jacky C. K. Chow, Auteur Année de publication : 2013 Article en page(s) : pp 74 - 85 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] auto-étalonnage [Termes IGN] compensation par moindres carrés [Termes IGN] contrainte géométrique [Termes IGN] plan (géométrie) [Termes IGN] télémétrie laser terrestre Résumé : (Auteur) Geometric features, planes in particular, have recently replaced signalised points as the object space primitives of choice for a number of fundamental terrestrial laser scanner data processing tasks such as registration, self-calibration and deformation monitoring. The inner constraints for planes are developed in this paper owing to their importance as the optimal means of datum definition. Pertinent least squares adjustment results from several terrestrial laser scanner datasets are presented to demonstrate the impact of planar inner constraints on registration and self-calibration. When solution quality is measured in terms of parameter precision and correlation, it is demonstrated that the planes should be constrained for both laser scanner registration and self-calibration with a basic additional parameter set. Numéro de notice : A2013-152 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2012.00700.x Date de publication en ligne : 16/12/2012 En ligne : https://doi.org/10.1111/j.1477-9730.2012.00700.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32290 [article]

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Range camera self-calibration with scattering compensation / Derek D. Lichti in ISPRS Journal of photogrammetry and remote sensing, vol 74 (Novembrer 2012)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 74 (Novembrer 2012) . - pp 101 - 109 Titre : Range camera self-calibration with scattering compensation Type de document : Article/Communication Auteurs : Derek D. Lichti, Auteur ; X. Qi, Auteur ; T. Ahmed, Auteur Année de publication : 2012 Article en page(s) : pp 101 - 109 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] auto-étalonnage [Termes IGN] caméra numérique [Termes IGN] compensation [Termes IGN] compensation par faisceaux [Termes IGN] compensation par modèles [Termes IGN] erreur systématique [Termes IGN] télémètre Résumé : (Auteur) Time-of-flight range camera data are prone to the scattering bias caused by multiple internal reflections of light received from a highly reflective object in the camera’s foreground that induce a phase shift in the light received from background targets. The corresponding range bias can have serious implications on the quality of data of captured scenes as well as the geometric self-calibration of range cameras. In order to minimise the impact of the scattering range biases, the calibration must be performed over a planar target field rather than a more desirable 3D target field. This significantly impacts the quality of the rangefinder offset parameter estimation due to its high correlation with the camera perspective centre position. In this contribution a new model to compensate for scattering-induced range errors is proposed that allows range camera self-calibration to be conducted over a 3D target field. Developed from experimental observations of scattering behaviour under specific scene conditions, it comprises four new additional parameters that are estimated in the self-calibrating bundle adjustment. The results of experiments conducted on five range camera datasets demonstrate the model’s efficacy in compensating for the scattering error without compromising model fidelity. It is further demonstrated that it actually reduces the rangefinder offset-perspective centre correlation and its use with a 3D target field is the preferred method for calibrating narrow field-of-view range cameras. Numéro de notice : A2012-606 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.09.008 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.09.008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32052 [article]

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A flexible mathematical method for calibration in digital aerial photogrammetry / Rongfu Tang in Photogrammetric Engineering & Remote Sensing, PERS, vol 78 n° 10 (October 2012)  

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New rigorous and flexible Fourier self-calibration models for airborne camera calibration / Rongfu Tang in ISPRS Journal of photogrammetry and remote sensing, vol 71 (July 2012)  

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Calibration of long focal length cameras in close range photogrammetry / Christos Stamatopoulos in Photogrammetric record, vol 26 n° 135 (September - November 2011)  

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A unified approach to self-calibration of terrestrial laser scanners / Yuriy Reshetyuk in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 5 (September - October 2010)  

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An integrated bundle adjustment approach to range camera geometric self-calibration / Derek D. Lichti in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 4 (July - August 2010)  

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Camera calibration with baseline distance constraints / J. Lerma in Photogrammetric record, vol 25 n° 130 (June - August 2010)  

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Sensor modeling, self-calibration and accuracy testing of panoramic cameras and laser scanners / J. Amiri Parian in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 1 (January - February 2010)  

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Terrestrial laser scanner self-calibration: correlation sources and their mitigation / Derek D. Lichti in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 1 (January - February 2010)  

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Comparative geometric and radiometric evaluation of mobile phone and still video cameras / Devrim Akca in Photogrammetric record, vol 24 n° 127 (September - November 2009)  

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DMC geometry analysis and virtual image characterisation / R. Alamus in Photogrammetric record, vol 23 n° 124 (December 2008 - February 2009)  

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