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On improving navigation accuracy of GPS/INS systems / Dorota A. Grejner-Brzezinska in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 4 (April 2005)
[article]
Titre : On improving navigation accuracy of GPS/INS systems Type de document : Article/Communication Auteurs : Dorota A. Grejner-Brzezinska, Auteur ; Charles K. Toth, Auteur ; Y. Yi, Auteur Année de publication : 2005 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] capteur à balayage
[Termes IGN] capteur imageur
[Termes IGN] centrale inertielle
[Termes IGN] élément d'orientation externe
[Termes IGN] filtrage du bruit
[Termes IGN] géoréférencement direct
[Termes IGN] GPS-INS
[Termes IGN] modèle d'erreur
[Termes IGN] modèle stochastique
[Termes IGN] orientation du capteur
[Termes IGN] pesanteur terrestre
[Termes IGN] point d'appui
[Termes IGN] positionnement par GPS
[Termes IGN] précision de localisation
[Termes IGN] système de numérisation mobileRésumé : (Auteur) Direct georeferencing, also referred to as direct platform orientation (DPO), is defined as direct measurement of the imaging sensor external orientation parameters (EOP), using positioning and orientation sensors, such as the Global Positioning System (GPS) and Inertial Navigation System (INS) or Inertial Measurement Unit (Imu). Imaging sensors, most frequently supported by the Dpo technique, are digital cameras, lidar systems, multi-spectral or hyper-spectral scanners, or interferometric synthetic aperture radar (INSAR). While for scanning sensors, the use of Dpo is compulsory, frame digital cameras can also directly benefit from this modern technique of sensor orientation. With direct sensor orientation, the requirement for ground control, tie-point matching and aerotriangulation (AT) is significantly reduced, or even entirely eliminated, resulting in shorter times of data acquisition and processing, and streamlined and highly automated data workflow and quality control. Most of the time, the requirement for ground control points is limited to periodic system calibrations and quality control check. Direct georeferencing is considered a fundamental technology of conventional mobile mapping systems (MMS). Despite significant progress in GSP/INS-based direct georeferencing technology in the last decade, there is still room for improvement in terms of better accuracy and better tolerance to GPS outages. This paper is focused on three error modeling and compensation techniques that could potentially improve GPS/INS system's performance on both land-based and airborne platforms : (1) extended gravity compensation, (2) IMU signal de-noising, and (3) stochastic modeling of IMU errors. Numéro de notice : A2005-158 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.14358/PERS.71.4.377 En ligne : https://doi.org/10.14358/PERS.71.4.377 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27296
in Photogrammetric Engineering & Remote Sensing, PERS > vol 71 n° 4 (April 2005)[article]Updating a digital geographic database using Vehicle-borne Laser scanners and line cameras / H. Zhao in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 4 (April 2005)
[article]
Titre : Updating a digital geographic database using Vehicle-borne Laser scanners and line cameras Type de document : Article/Communication Auteurs : H. Zhao, Auteur ; Ryosuke Shibasaki, Auteur Année de publication : 2005 Article en page(s) : pp 415 - 424 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] 1:2.000
[Termes IGN] base de données localisées
[Termes IGN] caméra numérique
[Termes IGN] cartographie 3D
[Termes IGN] chambre DTC
[Termes IGN] données multitemporelles
[Termes IGN] fusion de données
[Termes IGN] géoréférencement direct
[Termes IGN] GPS-INS
[Termes IGN] instrument embarqué
[Termes IGN] milieu urbain
[Termes IGN] mise à jour de base de données
[Termes IGN] signalisation routière
[Termes IGN] système de numérisation mobile
[Termes IGN] télémètre laser terrestre
[Termes IGN] télémétrie laser terrestre
[Termes IGN] texture d'image
[Termes IGN] Tokyo (Japon)Résumé : (Auteur) The Vehicle-borne Laser Measurement System (VLMS) is a mobile mapping system where three single-row laser range scanners, six line CCD cameras, and a GPS/INS-based navigation unit are mounted on a van to measure object geometry and texture along a street. This paper contributes to a method of fusing the data output of VLMS with existing geographic data sources where the focus is on the rectification of the vehicle's motion data derived from GPS/INS, which may be quite erroneous in an urban area. An algorithm is developed to correct the four variables of the vehicle's motion data, i.e., x, y, and z coordinates of the vehicle position and yaw angle of orientation by registering the laser points of the VLMS with an existing data source, e.g., a DSM. The algorithm was examined using the VLMS data that were taken in the Ginza District, Tokyo. By manually assigning 18 sets of tie-points, the vehicle's motion data were corrected automatically and efficiently, such that the laser points of VLMS were matched to a DSM. In data fusion, a set of objects, which contained commercial signboards, traffic signs and signals, road boundaries, and road lights were extracted from the corrected VLMS data using an interface described in a previous paper. They were integrated with a 1:2500 3D map that consists of only building frames. In addition, line images from the VLMS were projected onto the building facades of the 3D Map, and textures were generated automatically. Copyright ASPRS Numéro de notice : A2005-160 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.71.4.415 En ligne : https://doi.org/10.14358/PERS.71.4.415 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27298
in Photogrammetric Engineering & Remote Sensing, PERS > vol 71 n° 4 (April 2005) . - pp 415 - 424[article]
Titre : Modelling of spaceborne linear array sensors Type de document : Thèse/HDR Auteurs : Daniela Poli, Auteur Editeur : Zurich : Institut für Geodäsie und Photogrammetrie IGP - ETH Année de publication : 2005 Collection : IGP Mitteilungen, ISSN 0252-9335 num. 85 Importance : 204 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-906467-50-4 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] auto-étalonnage
[Termes IGN] C (langage)
[Termes IGN] capteur aérien
[Termes IGN] capteur en peigne
[Termes IGN] capteur spatial
[Termes IGN] chambre DTC
[Termes IGN] compensation par faisceaux
[Termes IGN] géométrie de l'image
[Termes IGN] géoréférencement direct
[Termes IGN] géoréférencement indirect
[Termes IGN] GPS-INS
[Termes IGN] image EROS
[Termes IGN] image MOMS-2P
[Termes IGN] image SPOT-HRS
[Termes IGN] image Terra-ASTER
[Termes IGN] image Terra-MISR
[Termes IGN] modèle géométrique de prise de vue
[Termes IGN] modèle mathématique
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] modèle stéréoscopique
[Termes IGN] orientation du capteur
[Termes IGN] orientation externe
[Termes IGN] orientation interne
[Termes IGN] point d'appui
[Termes IGN] point de vérification
[Termes IGN] points homologuesIndex. décimale : 35.11 Géométrie et qualité des prises de vues Résumé : (Auteur) The topic of this research is the development of a mathematical model for the georeferencing of imagery acquired by multi-line CCD array sensors, carried on air- or spacecraft. Linear array sensors are digital optical cameras widely used for the acquisition of panchromatic and multispectral images in pushbroom mode with spatial resolution ranging from few centimeters (airborne sensors) up to hundreds meters (spaceborne sensors). The images have very high potentials for photogrammetric mapping at different scales and for remote sensing applications. For example, they can be used for the generation of Digital Elevation Models (DEM), that represent an important basis for the creation of Geographic Information Systems, and the production of 3D texture models for visualization and animation purposes.
In the classical photogrammetric chain that starts from the radiometric preprocessing of the raw images and goes to the generation of products like the DEMs, the orientation of the images is a fundamental step and its accuracy is a crucial issue during the evaluation of the entire system. For pushbroom sensors, the triangulation and photogrammetric point determination are rather different compared to the standard approaches for full frame imagery and require special investigations on the sensor geometry and the acquisition mode.
Today various models based on different approaches have been developed, but few of them are rigorous and can be used for a wide class of pushbroom sensors. In general a rigorous sensor model aims to describe the relationship between image and ground coordinates, according to the physical properties of the image acquisition. The functional model is based on the collinearity equations. The sensor model presented in this thesis had to fulfil the requirement of being rigorous and at the same time as flexible as possible and adaptable to a wide class of linear array sensors. In fact pushbroom scanners in use show different geometric characteristics (optical systems, number of CCD lines, scanning mode, stereoscopy) and for each data set specific information are available (ephemeris, GPS/INS observations, calibration, other internal parameters). Therefore the model needs to be dependent on a certain number of parameters that may change for each sensor.
According to the availability of information on the sensor internal and external orientation, the proposed model includes two different orientation approaches.
The first one, the direct georeferencing one, is based on the estimations of the ground coordinates of the points measured in the images through a forward intersection, using the external orientation provided by GPS and INS instruments or interpolated by ephemeris or computed using the orbital parameters (satellite case). This approach does not require any ground control points, except for final checking, and does not estimate any additional parameters for the correction of the interior and exterior orientation. For this reason, the accuracy of this method depends on the accuracy of the external and internal orientation data.
The alternative orientation method, based on indirect georeferencing, is used if the sensor external and internal orientation is not available or not enough accurate for high-precision photograrnmetric mapping. This approach is a self-calibrating bundle adjustment. The sensor position and attitude are modelled with 2nd order piecewise polynomial functions (PPM) depending on time. Constraints on the segment borders assure the continuity of the functions, together with their first and second derivatives. Using pseudo-observations on the PPM parameters, the polynomial degree can be reduced to one (linear functions) or even to zero (constant functions). If GPS and INS are available, they are integrated in the PPM. For the self-calibration, additional parameters (APs) are used to model the lens internal parameters and distortions and the linear arrays displacements in the focal plane.
The parameters modelling the internal and external orientation, together with the ground coordinates of tie and control points, are estimated through a least-squares bundle adjustment using well distributed ground control points. The use of pseudo-observations allows the user to run the adjustment fixing any unknown parameters to certain values. This option is very useful not only for the external orientation modelling, but also for the analysis of the single self-calibration parameter's influence. The weights for the observations and pseudo-observations are determined according to the measurement accuracy. A blunder detection procedure is integrated for the automatic detection of wrong image coordinate measurement. The adjustment results are analyzed in terms of internal and external accuracy. The APs to be estimated are chosen according to their correlations with the other unknown parameters (ground coordinates of tie points and PPM parameters). A software has been developed under Unix environment in C language.
The flexibility of the model has been proved by testing it on MOMS-2P, SPOT-5/HRS, ASTER, MISR and EROS-A1 stereo images. These sensors have different characteristics (single-lens and multi-lens optical systems, various number of linear arrays, synchronous and asynchronous acquisition modes), covering a wide range of possible acquisition geometries.
For each dataset both the direct and indirect models have been used and in all cases the direct georeferencing was not accurate enough for high accurate mapping. The indirect model has been applied with different ground control points distributions (when possible), varying the PPM configurations (number of segments, polynomials degree) and with and without self-calibration. Excluding EROS-A1, all the imagery has been oriented with sub-pixels accuracy in the check points using a minimum of 6 ground control points. In case of EROS-A1, an accuracy in the range of I to 2 pixels has been achieved, due the lack of information on the geometry of the sensor asynchronous acquisition. For the ASTER and SPOT-5/HRS datasets, a DEM has also been generated and compared to some reference DEMs.
New cameras can be easily integrated in the model, because the required sensor information are accessible in literature as well as in the web. If no information on the sensor internal orientation is available, the model supposes that the CCD lines are parallel to each other in the focal plane and perpendicular to the flight direction and estimates any systematic error through the self-calibration. The satellite's position and velocity vectors, usually contained in the ephemeris, are required in order to compute the initial approximations for the PPM parameters. If this information is not available, the Keplerian elements can be used to estimate the nominal trajectory. For pushbroom scanners carried on airplane or helicopter the GPS and INS measurements are indispensable, due to the un-predictability of the trajectory.Note de contenu : 1. INTRODUCTION
1.1. REVIEW OF EXISTING MODELS
1.2. RESEARCH OBJECTIVES
1.3. OUTLINE
2. LINEAR CCD ARRAY SENSORS
2.1. SOLIDSTATE TECHNOLOGY
2.2. ARRAY GEOMETRIES
2.2. 1. Linear arrays
2.2.2. Other geometries
2.3. IMAGING SYSTEM
2.4. SENSOR CALIBRATION
2.4.1. Errors in CCD lines
2.4.2. Lens distortions
2.4.3. Laboratory calibration
2.5. STEREO ACQUISITION
2.5.1. Acrosstrack
2.5.2. Alongtrack
2.6. PLATFORMS
2.6.1. Satellite platforms
2.6.2. Airborne and helicopter platforms
2.7. IMAGE CHARACTERISTICS
2.7.1. Spatial resolution
2.7.2. Radiometric resolution
2.7.3. Spectral resolution
2.7.4. Temporal resolution
2.8. PROCESSING LEVELS
2.9. LIST OF LINEAR ARRAY SENSORS
2.10. CONCLUSIONS
3. DIRECT GEOREFERENCING
3.1. EXTERNAL ORIENTATION FROM GPS/INS
3.1.1. Background
3.1.2. GPS system
3.1.3. INS system
3.1.4. GPS/INS integration
3.1.5. Commercial systems
3.2. EXTERNAL ORIENTATION FROM EPHEMERIS
3.2.1. Orientation with Keplerian elements
3.2.2. Orientation from state vectors
3.2.3. Interpolation between reference lines
3.3. DIRECT GEOREFERENCING
3.3.1. From image to camera coordinates
3.3.2. From camera to ground coordinates
3.3.3. Estimation of approximate ground coordinates
3.3.4. Refinement
3.4. SOME CONSIDERATIONS ON GPS/INS MEASUREMENTS
3.5. ACCURACY EVALUATION
3.6. CONCLUSIONS
4. INDIRECT GEOREFERENCING
4.1. ALGORITHM OVERVIEW
4.2. EXTENTION TO MULTILENS SENSORS
4.3. EXTERNAL ORIENTATION MODELLING
4.3.1. Integration of GPS/INS observations
4.3.2. Function continuity
4.3.3. Reduction of polynomial order
4.4.SELFCALIBRATION
4.5. OBSERVATION EQUATIONS
4.5.1. Image coordinates
4.5.2. External orientation parameters
4.5.3. Selfcalibration parameters
4.5.4. Ground control points
4.6. LEAST SQUARES ADJUSTMENT
4.6.1. Theory of least squares adjustment
4.6.2. Linearization
4.6.3. Design matrix construction
4.6.4. Solution of linear system
4.7. ANALYSIS OF RESULTS
4.7.1. Internal accuracy
4.7.2. RMSE calculations
4.7.3. Correlations
4.7.4. Blunder detection
4.8. FORWARD INTERSECTION
4.9. SUMMARY AND COMMENTS
5. PREPROCESSING
5.1. METADATA FILES FORMATS
5.2. INFORMATION EXTRACTION FROM METADATA FILES
5.3. RADIOMETRIC PREPROCESSING
5.3.1. Standard algorithms
5.3.2. Adhoc filters
6. APPLICATIONS
6.1. WORKFLOW
6.2. MOMS02
6.2.1. Sensor description
6.2.2. Data description
6.2.3. Preprocessing
6.2.4. Image orientation
6.2.5. Summary and conclusions
6.3. SPOT5/HRS
6.3.1. Sensor description
6.3.2. Data description
6.3.3. Preprocessing
6.3.4. Image orientation
6.3.5. DEM generation
6.3.6. Comparison
6.3.7. Summary and conclusions
6.4 ASTER
6.4.1. Sensor description
6.4.2. Data description
6.4.3. Preprocessing
6.4.4. Images orientation
6.4.5. DEM generation
6.4.6. Comparison with reference DEMs
6.4.7. Summary and conclusions
6.5 MISR
6.5.1. Sensor description
6.5.2. Data description
6.5.3. Preprocessing
6.5.4. Image orientation
6.5.5. Summary and conclusions
6.6 EROS-A1
6.6.1. Sensor description
6.6.2. Data description and Preprocessing
6.6.3. Image orientation
6.6.4. Summary and conclusions
7. CONCLUSION AND OUTLOOK
7.1 CONCLUSION
7.2 OUTLOOKNuméro de notice : 13260 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère DOI : 10.3929/ethz-a-004946341 En ligne : http://dx.doi.org/10.3929/ethz-a-004946341 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54943 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 13260-01 35.11 Livre Centre de documentation En réserve M-103 Disponible
Titre : Multi-Sensor-Photogrammetrie : Vision oder Wirklichkeit? Titre original : [Photogrammétrie multi-capteur : vision ou réalité ?] Type de document : Thèse/HDR Auteurs : Norbert Haala, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2005 Collection : DGK - C Sous-collection : Dissertationen num. 589 Importance : 101 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5028-0 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation
[Termes IGN] classification
[Termes IGN] données laser
[Termes IGN] géoréférencement direct
[Termes IGN] lasergrammétrie
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle numérique de surface
[Termes IGN] segmentationIndex. décimale : 33.30 Photogrammétrie numérique Résumé : (Auteur) The application of multi-sensor systems for photogrammetric data collection has reached considerable interest. Within this habilitation treatise, their potential for spatial information collection is discussed exemplarily in the context of different application scenarios. This includes the increased degree of automation, which can be achieved for standard data processing as well as the chance to open up new areas of application for photogrammetric products and techniques. The combination of multiple sensors is first demonstrated by the example of integrated GPS/inertial systems, which are used to provide the transformation of the collected imagery to a reference coordinate system. This direct geo-ereferencing is applied for the geometric evaluation of airborne imagery alternatively to the indirect approach of image orientation based on standard aerial triangulation. Within the first part of the thesis the accuracy potential and different application scenarios of direct georeferencing are discussed. Another main point of interest is the suitable integration of the directly measured orientation parameters with the photogrammetric evaluation process. The combination of direct georeferencing and aerial triangulation is an important prerequisite for the calibration of the overall system. Additionally, the integrated processing allows to use the different sensors as complementary sources of information and helps to provide optimal solutions with respect to different application scenarios and accuracy requirements. The potential of integrated GPS/inertial systems is discussed exemplarily using data of digital airborne cameras. These systems facilitate the acquisition of multispectral images at high spatial resolution. Complementary to these sensors, airborne laser scanning provides an alternative data source, which is advantageous if the automatic collection of thematic object information is aspired. Compared to the use of standard panchromatic aerial images, especially the combination of image and height data is beneficial for the automatic reconstruction of topographic objects. Within the thesis this is demonstrated by a process aiming on the combined classification of built-up areas. The advantages of integrating height and image data are also discussed by the example of a combined segmentation process, which aims on the extraction of three-dimensional geometric primitives like straight lines and planar regions. Such an extraction of reliable and accurate geometric primitives is an important preprocessing step for 3D object reconstruction. For this reason, the segmentation combines the advantages of both data sources, the relatively simple interpretation of height data due to the restriction to geometric information on the one hand and the high density of information available from aerial images on the other hand. In addition to primary data sources as they are provided from different photogrammetric sensors, GIS data is frequently already available for a number of application scenarios. In the figurative sense, the use of GIS data can also be interpreted as the integration of a additional sensor data. The availability of GIS during automated collection of topographic objects is especially useful, since GIS provides information from already interpreted data. Within the thesis the advantages of use of existing GIS is demonstrated by processes aiming on the reconstruction of 3D building models from dense height models. Within the process given outlines of the buildings are integrated in order to support the segmentation process and to detect the underlying structure of the extracted geometric primitives. If improved methods of photogrammetric data collection are available new markets for new products can be opened. One example is the increasing demand for 3D city models, which are frequently applied in the context of virtual landscape visualisation. These 3D city models can also be integrated to a suitable multi-sensor, multi-data system in order to allow for a GIS-based georeferencing of terrestrial images. Such an automatic registration of terrestrial images to a virtual 3D model of the environment is for example required during update or extension of the visible building models. As it is discussed in the final part of the thesis, the result of this orientation process can also be used for the presentation of object related information in the context of location based services. Numéro de notice : 13432 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : HDR DOI : sans En ligne : https://www.ifp.uni-stuttgart.de/dokumente/Dissertationen/habil_c-589.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54964 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 13432-01 33.30 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible Blocs équipés de mesures GPS et inertielles, bilan des essais Applanix IGN, mise en place cartographique / Philippe Hottier in Revue Française de Photogrammétrie et de Télédétection, n° 175 (Septembre 2004)
[article]
Titre : Blocs équipés de mesures GPS et inertielles, bilan des essais Applanix IGN, mise en place cartographique Type de document : Article/Communication Auteurs : Philippe Hottier , Auteur Année de publication : 2004 Article en page(s) : pp 43 - 56 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation
[Termes IGN] altération linéaire
[Termes IGN] analyse comparative
[Termes IGN] caméra numérique
[Termes IGN] cartographie automatique
[Termes IGN] coordonnées GPS
[Termes IGN] correction géométrique
[Termes IGN] géoréférencement direct
[Termes IGN] GPS-INS
[Termes IGN] instrumentation Applanix
[Termes IGN] photogrammétrie numérique
[Termes IGN] point de vérification
[Termes IGN] points homologuesRésumé : (Auteur) Deux blocs (caméra numériques 4K, focale 30mm, pixel 9um) l'un au 1/33000 (120 clichés), l'autre au 1/75000 (370 clichés) ont fait l'objet en 2003 d'un équipement GPS+UMI ; les mesures ont été faites à parti d'un appareillage Applanix et les données de mise en place (6 nombres par faisceau) ont été fournies par la firme Applanix après étalonnage sur une petite zone du chantier au 1/33000. L'IGN a procédé de son côté à une aérotriangulation classique (3200 points de liaison sur le premier bloc, 20500 sur le second). La comparaison des résultats sur les points de contrôle et sur l'ensemble des points de liaison 3D a montré : 1. Que les mesures GPS étaient excellentes (aérotriangulation faite en mode GPS absolu : aucun appui). 2. Qu'il en était de même des mesures angulaires. Cependant, l'étude n'a pu être faite qu'après correction des altitudes des sommets car Applanix a oublié de tenir compte de l'altération linéaire ; on montre de plus que le Z fourni par Applanix, qui n'est pas l'altitude vraie mais celui qu'on obtiendrait en faisant un relèvement dans l'espace sur les points 3D cartographiques du cliché est en toute rigueur incorrect, même si on tient compte de l'altération linéaire : en zone montagneuse les résultats seraient mauvais. On montre enfin qu'il serait bien plus simple de fournir 7 nombres par clichés : les XsYsZs cartographiques du sommet comme on le fait habituellement pour l'aérotriangulation, les trois angles définissant la rotation de mise en place et la valeur de l'altération linéaire e à l'aplomb du sommet et pour Z=0 ; il suffit alors dans toute application ultérieure de corriger chaque point-image (xyz) à l'aide d'une formule simple : x'=(1+k)x, y'=(1+k)y avec k = Zs-z r2 + e - Z (p : focale ; r distance radiale, R rayon
2p2R R
terrestre ; Z valeur approchée de l'altitude du point 3D). En prise de vue non verticale, il faut utiliser une formule un peu plus compliquée. Ceci reste valable en aérotriangulation et dans toutes les applications en aval : inutile de fournir des coordonnées de points 3D au sol et leurs coordonnées image : il suffit de fournir ces 7 nombres par cliché et de tenir compte de la formule indiquée.Numéro de notice : A2004-616 Affiliation des auteurs : IGN (1940-2011) Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27132
in Revue Française de Photogrammétrie et de Télédétection > n° 175 (Septembre 2004) . - pp 43 - 56[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-04031 RAB Revue Centre de documentation En réserve L003 Disponible L'altimétrie par laser scanner aéroporté / B. Bergeon in Géomatique expert, n° 35 (01/06/2004)PermalinkFrom mobile mapping to telegeoinformatics: paradigm shift in geospatial data acquisition, processing, and management / Dorota A. Grejner-Brzezinska in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 2 (February 2004)PermalinkLaserscan DTMS for modeling flood risk areas / Karl Kraus in GIS Geo-Informations-Systeme, vol 2003 n° 12 (Dezember 2003)PermalinkGéoréférencement direct des images par GPS/INS : Approche rigoureuse pour le calibrage des excentricités angulaires (boresight calibration) / Philipp Schaer in Géomatique suisse, vol 101 n° 8 (01/08/2003)PermalinkL'imagerie géographique 3D par laser héliporté, le système FLI-MAP (R) : application à un levé topographique de voies pour RFF-SNCF / R. Damiano in XYZ, n° 94 (mars - mai 2003)PermalinkLe levé laser aéroporté : techniques, applications et recherche / Olivier de Joinville in Bulletin d'information scientifique et technique de l'IGN, n° 74 (mars 2003)PermalinkExperiences on operational GPS: inertial system calibration in airborne photogrammetry / Michael Cramer in GIS Geo-Informations-Systeme, vol 2002 n° 6 (Juni 2002)PermalinkLook beneath the surface with augmented reality / G. Roberts in GPS world, vol 13 n° 2 (February 2002)PermalinkKonzeption, Entwicklung und Erprobung eines digitalen integrierten flugzeuggetragenen Fernerkundungssystems für Precision Farming (PFIFF) / Görres Grenzdorffer (2002)PermalinkL'aérotriangulation : aussi pour l'ADS40 / François Gervaix in XYZ, n° 89 (décembre 2001 - février 2002)Permalink