Centre de documentation
scientifique

The influence of subpixel measurement on digital camera calibration / Mauricio Galo in Revue Française de Photogrammétrie et de Télédétection, n° 198 - 199 (Septembre 2012)  

Public [article]  inRevue Française de Photogrammétrie et de Télédétection > n° 198 - 199 (Septembre 2012) . - pp 62 - 70 Titre : The influence of subpixel measurement on digital camera calibration Type de document : Article/Communication Auteurs : Mauricio Galo, Auteur ; Antonio Maria Garcia Tommaselli, Auteur ; J.K. Hasegawa, Auteur Année de publication : 2012 Article en page(s) : pp 62 - 70 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] chambre DTC [Termes IGN] compensation par moindres carrés [Termes IGN] élément d'orientation interne [Termes IGN] étalonnage de chambre métrique [Termes IGN] extraction automatique [Termes IGN] image multibande [Termes IGN] point d'intérêt [Termes IGN] précision infrapixellaire Résumé : (Auteur) The aim of this work is to evaluate the influence of point measurements in images, with subpixel accuracy, and its contribution in the calibration of digital cameras. Also, the effect of subpixel measurements in 3D coordinates of check points in the object space will be evaluated. With this purpose, an algorithm that allows subpixel accuracy was implemented for semi-automatic determination of points of interest, based on Förstner operator. Experiments were accomplished with a block of images acquired with the multispectral camera DuncanTech MS3100-CIR. The influence of subpixel measurements in the adjustment by Least Square Method (LSM) was evaluated by the comparison of estimated standard deviation of parameters in both situations, with manual measurement (pixel accuracy) and with subpixel estimation. Additionally, the influence of subpixel measurements in the 3D reconstruction was also analyzed. Based on the obtained results, i. e., on the quantification of the standard deviation reduction in the Inner Orientation Parameters (IOP) and also in the relative error of the 3D reconstruction, it was shown that measurements with subpixel accuracy are relevant for some tasks in Photogrammetry, mainly for those in which the metric quality is of great relevance, as Camera Calibration. Numéro de notice : A2012-425 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.52638/rfpt.2012.73 Date de publication en ligne : 21/04/2014 En ligne : https://doi.org/10.52638/rfpt.2012.73 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31871 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
012-201203	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Monitoring GOCE gradiometer calibration parameters using accelerometer and star sensor data: methodology and first results / C. Siemes in Journal of geodesy, vol 86 n° 8 (August 2012)  

Public [article]  inJournal of geodesy > vol 86 n° 8 (August 2012) . - pp 629 - 645 Titre : Monitoring GOCE gradiometer calibration parameters using accelerometer and star sensor data: methodology and first results Type de document : Article/Communication Auteurs : C. Siemes, Auteur ; Roger Haagmans, Auteur ; M. Kern, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 629 - 645 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] champ de pesanteur terrestre [Termes IGN] données GOCE [Termes IGN] étalonnage d'instrument [Termes IGN] GOCE [Termes IGN] gradient de gravitation [Termes IGN] gradiomètre [Termes IGN] série temporelle Résumé : (Auteur) The Gravity field and steady-state Ocean Circulation Explorer (GOCE) satellite, launched on 17 March 2009, is designed to measure the Earth’s mean gravity field with unprecedented accuracy at spatial resolutions down to 100 km. The accurate calibration of the gravity gradiometer on-board GOCE is of utmost importance for achieving the mission goals. ESA’s baseline method for the calibration uses star sensor and accelerometer data of a dedicated calibration procedure, which is executed every 2 months. In this paper, we describe a method for monitoring the evolution of calibration parameter during that time. The method works with star sensor and accelerometer data and does not require gravity field models, which distinguishes it from other existing methods. We present time series of calibration parameters estimated from GOCE data from 1 November 2009 to 17 May 2010. The time series confirm drifts in the calibration parameters that are present in the results of other methods, including ESA’s baseline method. Although these drifts are very small, they degrade the gravity gradients, leading to the conclusion that the calibration parameters of the ESA’s baseline method need to be linearly interpolated. Further, we find a correction of -36 * 10-6 for one calibration parameter (in-line differential scale factor of the cross-track gradiometer arm), which improves the gravity gradient performance. The results are validated by investigating the trace of the calibrated gravity gradients and comparing calibrated gravity gradients with reference gradients computed along the GOCE orbit using the ITG-Grace-2010s gravity field model. Numéro de notice : A2012-376 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-012-0545-8 Date de publication en ligne : 22/02/2012 En ligne : https://doi.org/10.1007/s00190-012-0545-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31822 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
266-2012081	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Off-line vs. On-line calibration of a panoramic-based mobile mapping system / Bertrand Cannelle in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol I-3 (2012)  

Public [article]  inISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences > vol I-3 (2012) . - pp 31 - 36 Titre : Off-line vs. On-line calibration of a panoramic-based mobile mapping system Type de document : Article/Communication Auteurs : Bertrand Cannelle , Auteur ; Nicolas Paparoditis , Auteur ; Marc Pierrot-Deseilligny , Auteur ; Jean-Pierre Papelard , Auteur Année de publication : 2012 Article en page(s) : pp 31 - 36 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] centrale inertielle [Termes IGN] chambre DTC [Termes IGN] étalonnage d'instrument [Termes IGN] étalonnage de capteur (imagerie) [Termes IGN] étalonnage en vol [Termes IGN] précision submillimétrique Résumé : (auteur) This paper presents two methods to calibrate a photogrammetric-based mobile mapping system. The paper is organised as follow. The first part presents the problem we are trying to solve, i.e. the calibration of multi-camera head on a mobile mapping system equipped with an Inertial Navigation System (INS). We want to estimate on the one hand the relative pose of images within the head and on the other hand the relative pose between the head and the INS. The second part presents the first calibration method which is based on observations of a sub-millimeter accuracy topometric target network. The third part explores a method to determine the calibration on-line, i.e. using the images acquired during the surveys. The final section compare the two methods on an neutral data set and resumes the pros and cons of each method. Numéro de notice : A2012-714 Affiliation des auteurs : LASTIG MATIS (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/isprsannals-I-3-31-2012 En ligne : http://dx.doi.org/10.5194/isprsannals-I-3-31-2012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82703 [article]

Fast AT: a simple procedure for quasi direct orientation / M. Blazquez in ISPRS Journal of photogrammetry and remote sensing, vol 71 (July 2012)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 71 (July 2012) . - pp 1 - 11 Titre : Fast AT: a simple procedure for quasi direct orientation Type de document : Article/Communication Auteurs : M. Blazquez, Auteur ; Ismael Colomina, Auteur Année de publication : 2012 Article en page(s) : pp 1 - 11 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] aérotriangulation numérique [Termes IGN] étalonnage de chambre métrique [Termes IGN] GPS-INS [Termes IGN] modèle mathématique [Termes IGN] orientation d'image [Termes IGN] orientation du capteur [Termes IGN] orientation du capteur intégrée Résumé : (Auteur) Over the past two decades, the development of Global Navigation Satellite System (GNSS) technology, inertial navigation technology and Inertial Navigation Systems (INS) and their application to sensor orientation in photogrammetry and remote sensing has led to more precise, accurate, reliable and cost efficient orientation and calibration methods and procedures. Today, most airborne photogrammetric and remote sensing systems are equipped with GNSS receivers and inertial sensors. To a large extent and more or less independently from the imaging geometry and sensor type, orientation is performed with the “direct” and “integrated” methods. In this paper we introduce a new orientation method that we call “Fast AT” for frame images. The new method combines image measurements, ground control and aerial control observations in novel quantitative and qualitative ways. Depending on project specifications, Fast AT can be a robust alternative to direct orientation and, at the very least, a fast quality control tool for any orientation task. We analyze the performance of Fast AT with analogue and digital frame imagery and draw conclusions on its general properties. Numéro de notice : A2012-344 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.04.005 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.04.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31790 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
081-2012051	SL	Revue	Centre de documentation	Revues en salle	Disponible

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)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 71 (July 2012) . - pp 76 - 85 Titre : New rigorous and flexible Fourier self-calibration models for airborne camera calibration Type de document : Article/Communication Auteurs : Rongfu Tang, Auteur ; Dieter Fritsch, Auteur ; Michael Cramer, Auteur Année de publication : 2012 Article en page(s) : pp 76 - 85 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] approximation [Termes IGN] auto-étalonnage [Termes IGN] caméra numérique [Termes IGN] capteur aérien [Termes IGN] étalonnage de chambre métrique [Termes IGN] photogrammétrie aérienne [Termes IGN] série de Fourier Résumé : (Auteur) This paper presents a new family of rigorous and flexible mathematical self-calibration additional parameters (APs) for airborne camera calibration. Photogrammetric self-calibration can – to a very large extent – be considered as a function approximation problem in mathematics. It is shown, that algebraic polynomials are less desirable for designing self-calibration APs due to the highly correlated terms. Based on the mathematical approximation theory, we suggest that Fourier series be the optimal mathematical basis functions for self-calibration purpose. A whole family of so-called Fourier self-calibration APs is developed, whose solid theoretical foundations are the Laplace’s Equation and the Fourier Theorem. Fourier APs are orthogonal, rigorous, flexible, generic and efficient for calibrating the image distortion of frame-format airborne cameras. The high performance of Fourier APs is demonstrated in many practical tests on different camera systems, including the DMC, DMCII, UltracamX, UltracamXp and DigiCAM cameras. We illustrate the theoretical and practical advantages of the Fourier APs over the physical APs and the popular polynomial APs. The joint applications with physical models are promoted for specific applications as well. On account of the theoretical justifications and high practical performance, Fourier APs should be preferred for in situ airborne camera calibration. Numéro de notice : A2012-349 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.05.004 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.05.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31795 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
081-2012051	SL	Revue	Centre de documentation	Revues en salle	Disponible

Capturing sail shape in a wind tunnel environment / M. Smith in Photogrammetric record, vol 27 n° 138 (June - August 2012)  

Permalink

Modelling and compensating internal light scattering in time of flight range cameras / Wilfiried Karel in Photogrammetric record, vol 27 n° 138 (June - August 2012)  

Permalink

Parameterising internal camera geometry with focusing distance / E. Sanz-Ablanedo in Photogrammetric record, vol 27 n° 138 (June - August 2012)  

Permalink

Radiometric performance of the SMOS reference radiometers-assessment after one year of operation / J. Kainulainen in IEEE Transactions on geoscience and remote sensing, vol 50 n° 5 Tome 1 (May 2012)  

Permalink

Méthodologie de mesure de la vapeur d'eau atmosphérique : Objectifs et premiers résultats de la campagne DEMEVAP 2011 à l'Observatoire de Haute Provence [diaporama] / Emmanuel Bardiere (08/03/2012) 

Permalink

Calibration d’un système de numérisation mobile multi-caméras [diaporama] / Bertrand Cannelle (2012) 

Permalink

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

Permalink

Absolute calibration of Jason radar altimeters from GPS kinematic campaigns over Lake Issykul / J.F. Cretaux in Marine geodesy, vol 34 n° 3-4 (July - december 2011)  

Permalink

The Harvest experiment LIDAR system : Water level measurement device comparison for Jason-1 and Jason-2/OSTM calibration / S. Washburn in Marine geodesy, vol 34 n° 3-4 (July - december 2011)  

Permalink

Calibrating and validating multispectral 3D imaging systems at a permanent test site: case study with an Intergraph DMC / Eija Honkavaara in Photogrammetric record, vol 26 n° 134 (June - August 2011)  

Permalink

Camera calibration using composed cubic splines / A. Arfaoui in Geomatica, vol 65 n° 2 (June 2011)  

Permalink

Expériences de photogrammétrie rapprochée par corrélation épipolaire dense / I. Zeroual in XYZ, n° 127 (juin - août 2011) 

Permalink

Image matching and surface registration for 3D reconstruction of a scoliotic torso / I. Detchev in Geomatica, vol 65 n° 2 (June 2011)  

Permalink

The EuroSDR project "radiometric aspects of digital photogrammetric images" : results of the empirical phase / Eija Honkavaara (01/06/2011)  

Permalink

L'acquisition de données mobiles en pratique / Anonyme in Géomatique expert, n° 80 (01/05/2011)

Permalink

Calibration de caméra par acquisition de type panoramique / Bertrand Cannelle in Revue Française de Photogrammétrie et de Télédétection, n° 194 (Mai 2011)

Permalink

GNSS algebraic structures / A. Lannes in Journal of geodesy, vol 85 n° 5 (May 2011)  

Permalink

Using horizontal and vertical building structure to constrain indirect sensor orientation / Markus Gerke in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 3 (May - June 2011)  

Permalink

Importance du système de référence terrestre dans la mesure du niveau des mers / Xavier Collilieux in Bulletin d'information scientifique et technique de l'IGN, n° 77 (avril 2011) 

Permalink

Multiscale Haar transform for blur estimation from a set of images / Lâmân Lelégard (2011)    

Permalink