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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 DSM generation and evaluation from QuickBird stereo imagery with 3D physical modelling / Thierry Toutin in International Journal of Remote Sensing IJRS, vol 25 n° 22 (November 2004)
[article]
Titre : DSM generation and evaluation from QuickBird stereo imagery with 3D physical modelling Type de document : Article/Communication Auteurs : Thierry Toutin , Auteur Année de publication : 2004 Article en page(s) : pp 5181 - 5193 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] compensation par faisceaux
[Termes IGN] couvert végétal
[Termes IGN] données altimétriques
[Termes IGN] données lidar
[Termes IGN] image Quickbird
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle numérique de terrain
[Termes IGN] modèle stéréoscopique
[Termes IGN] occupation du sol
[Termes IGN] Québec (Québec ; ville)
[Termes IGN] stéréoscopieRésumé : (Auteur) A digital terrain model (DTM) extracted from QuickBird in-track stereo images using a three-dimensional (3D) multisensor physical model developed at the Canada Centre for Remote Sensing, Natural Resources Canada was evaluated. Firstly. the stereo photogrammetric bundle adjustment was set-up with about 10 accurate ground control points and 1-2 m errors in the three axes were obtained over 48 independent checkpoints. The DTM was then generated using an area-based multi-scale image matching method and 3D semi-automatic editing tools and then compared to lidar elevation data with 0.2-m accuracy. An elevation error with 68% confidence level (LE68) of 6.4m was achieved over the full area. Since the DTM is in fact a digital surface model where the height, or a part, of land cover (trees, houses) is included, the accuracy depends on the land cover types. Using 3D visual classification of the stereo QuickBird images, different classes (deciduous, conifer, mixed and sparse forests, residential areas, bare soils and lakes) were generated to take into account the height of the surfaces (natural and human-made) in the accuracy evaluation. LE68 values of 3.4 m to 6.7 m were thus obtained depending on the land cover types with biases representative of the surface heights. On the other hand, LE68 values of 0.5m and 1.3 m with no bias were obtained for lakes and bare soils respectively. These last results are more representative of the real stereo QuickBird potential for DTM and 5-m contour line generation, compliant with the highest topographic standard. Since the images were acquired in wintertime and the lidar data in summertime, better results could thus be expected when using stereo images acquired in summertime, mainly in deciduous forests to integrate the full canopy height into the DSM. Numéro de notice : A2004-492 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160410001726030 En ligne : https://doi.org/10.1080/01431160410001726030 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27009
in International Journal of Remote Sensing IJRS > vol 25 n° 22 (November 2004) . - pp 5181 - 5193[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04201 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Comparison of stereo-extracted DTM from different high-resolution sensors: SPOT-5, EROS-A, IKONOS-II, and QuickBird : Learning from Earth's Shapes and Colors / Thierry Toutin in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)
[article]
Titre : Comparison of stereo-extracted DTM from different high-resolution sensors: SPOT-5, EROS-A, IKONOS-II, and QuickBird : Learning from Earth's Shapes and Colors Type de document : Article/Communication Auteurs : Thierry Toutin , Auteur Année de publication : 2004 Conférence : IGARSS 2003, International Geoscience And Remote Sensing Symposium 21/07/2003 25/07/2003 Toulouse France Proceedings IEEE Article en page(s) : pp 2121 - 2129 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse comparative
[Termes IGN] compensation par faisceaux
[Termes IGN] image à résolution métrique
[Termes IGN] image à très haute résolution
[Termes IGN] image EROS
[Termes IGN] image Ikonos
[Termes IGN] image optique
[Termes IGN] image Quickbird
[Termes IGN] image SPOT 5
[Termes IGN] modèle numérique de terrain
[Termes IGN] point de vérification
[Termes IGN] précision décimétrique
[Termes IGN] stéréoscopieRésumé : (Auteur) Digital elevation models (DEMs) extracted from high-resolution stereo-images (SPOT-5, EROS-A, IKONOS-II, and QuickBird) using a three-dimensional multisensor physical model developed at the Canada Centre for Remote Sensing, Natural Resources Canada were evaluated. In a first step, the photogrammetric bundle adjustment was setup for the stereo-images with few accurate ground control points. In a second step, DEMs were generated using an area-based multiscale image matching method and then compared to 0.2-m accurate light detection and ranging (LIDAR) elevation data. Elevation linear errors with 68% confidence level (LE68) of 6.5, 20, 6.4, and 6.7 m were achieved for SPOT, EROS, IKONOS, and QuickBird, respectively. The poor results for EROS are mainly due to its asynchronous low orbit, which generated large geometric and radiometric differences. However, when such differences were not large, LE68 of 10 m (four pixels) was achieved. Since the SPOT, IKONOS, and QuickBird DEMs were in fact digital surface models, where the height of land covers was included, elevation accuracy was performed only on bare surfaces (soils and lakes), where there was no difference between the stereo-extracted elevations and the LIDAR data. LE68 of 2.2, 1.5, and 1.2 m were then obtained for SPOT, IKONOS, and QuickBird, respectively. When compared to sensor resolution, multidate across-track SPOT with a smaller base-to-height (B/H) ratio of 0.77 achieved three to four times better results than same-date in-track IKONOS and QuickBird with B/H of around 1: 0.5 pixels versus 1.5 or 2 pixels. Copyright IEEE Numéro de notice : A2004-454 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.834641 En ligne : https://doi.org/10.1109/TGRS.2004.834641 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26974
in IEEE Transactions on geoscience and remote sensing > vol 42 n° 10 (October 2004) . - pp 2121 - 2129[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-04101 RAB Revue Centre de documentation En réserve L003 Disponible Spatiotriangulation with multisensor VIR/SAR / Thierry Toutin in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)
[article]
Titre : Spatiotriangulation with multisensor VIR/SAR Type de document : Article/Communication Auteurs : Thierry Toutin , Auteur Année de publication : 2004 Conférence : IGARSS 2003, International Geoscience And Remote Sensing Symposium 21/07/2003 25/07/2003 Toulouse France Proceedings IEEE Article en page(s) : pp 2096 - 2103 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image mixte
[Termes IGN] Canada
[Termes IGN] compensation par bloc
[Termes IGN] compensation par faisceaux
[Termes IGN] image ERS
[Termes IGN] image Landsat-ETM+
[Termes IGN] image multicapteur
[Termes IGN] image optique
[Termes IGN] image radar
[Termes IGN] image Radarsat
[Termes IGN] image SPOT-HRV
[Termes IGN] image Terra-ASTER
[Termes IGN] méthode des moindres carrés
[Termes IGN] modélisation 3D
[Termes IGN] montagne
[Termes IGN] point d'appui
[Termes IGN] point de vérification
[Termes IGN] points homologues
[Termes IGN] résidu
[Termes IGN] spatiotriangulationRésumé : (Auteur) The objectives of this research study was to evaluate the spatiotriangulation applied to multisensor satellite images, which enabled the simultaneous geometric processing of a large number of images and strips together to reduce the control point requirement. The spatiotriangulation is based on the three-dimensional physical models developed for multisensor images at the Canada Centre for Remote Sensing, Natural Resources Canada and on a least squares block bundle adjustment process with orbital constraints. The spatiotriangulation was applied to 49 images in six blocks (Landsat-7 ETM+, panchromatic SPOT-4 HRV, multiband ASTER, multimode radar RADARSAT-1, and ERS-1) acquired over the Rocky Mountains, Canada, from different viewing/look angles. The first results of least squares block bundle adjustments showed that the same error residuals (around 20 m) were obtained with the different image blocks whether independently or simultaneously processed. In addition to ground control points (GCPs), elevation tie points (ETPs), with a known elevation value, instead of normal tie points were used in the overlaps because the viewing/look-angle differences of overlapping images were generally small (8°). The second and most important results were related to simultaneous bundle adjustments of the largest "master" Landsat-7 block (600 km x 500 km) using 25 GCPs in the two outer strips and the smallest "slave" block(s) using no GCP but only ETPs. The errors, verified by a large number of independent check points (ICPs) in the "slave" blocks, were between 15-35 m (1.5-2 resolutions), depending on the "slave" block. However, the combined image pointing and map errors of ICPs (25-30 m) are included in these 15-35-m error results, and the internal accuracy of the blocks should, thus, be better (around one resolution). The research study demonstrated, thus, the possibility to use the largest block with a reduced number of GCPs to simultaneously adjust single image(s)/strip(s) or smallest block(s) with only ETPs, and with no degradation in the accuracy. Numéro de notice : A2004-452 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.834638 En ligne : https://doi.org/10.1109/TGRS.2004.834638 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26972
in IEEE Transactions on geoscience and remote sensing > vol 42 n° 10 (October 2004) . - pp 2096 - 2103[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-04101 RAB Revue Centre de documentation En réserve L003 Disponible Accuracy assessment of Quickbird stereo imagery / M. Noguchi in Photogrammetric record, vol 19 n° 106 (June - August 2004)
[article]
Titre : Accuracy assessment of Quickbird stereo imagery Type de document : Article/Communication Auteurs : M. Noguchi, Auteur ; Clive Simpson Fraser, Auteur Année de publication : 2004 Article en page(s) : pp 128 - 137 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] compensation par faisceaux
[Termes IGN] erreur systématique
[Termes IGN] Geographical Survey Institute
[Termes IGN] géoréférencement
[Termes IGN] image à très haute résolution
[Termes IGN] image Quickbird
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] orientation du capteur
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] précision métriqueRésumé : (Auteur) L'Institut Géographique japonais a effectué récemment une évaluation des qualités métriques de l'imagerie stéréoscopique du satellite QuickBird. On présente dans cet article, une estimation de la précision à l'issue des phases relatives au géopositionnement et à l'orientation du capteur. Le but de cette étude était double. Il s'agissait d'abord de confirmer les possibilités d'utilisation de l'imagerie de QuickBird pour la cartographie topographique à l'échelle du 1:25.000. Ensuite, il fallait déterminer la précision que l'on pouvait atteindre avec le produit image BASIC. On a recouru aux techniques de compensation affine par faisceaux et aux fonctions rationnelles, ces dernières ayant inclus une compensation des biais. Les résultats obtenus montrent à nouveau la haute précision permise par les fonctions rationnelles mais jettent un doute sur la possibilité d'application du modèle affine 3D pour obtenir un géopositionnement précis à partir de l'imagerie de QuickBird. Numéro de notice : A2004-217 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2004.00035.x En ligne : https://doi.org/10.1111/j.1477-9730.2004.00035.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26744
in Photogrammetric record > vol 19 n° 106 (June - August 2004) . - pp 128 - 137[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 106-04021 RAB Revue Centre de documentation En réserve L003 Disponible DTM generation from Ikonos in-track stereo images using a 3D physical model / Thierry Toutin in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 6 (June 2004)PermalinkBundle adjustment and incidence of linear features on accuracy of external calibration parameters / Franck Jung (2004)PermalinkPractical experiences with automatic aerial triangulation using different software packages / G. Buyuksalih in Photogrammetric record, vol 18 n° 102 (June - August 2003)PermalinkError tracking in Ikonos geometric processing using a 3D parametric model / Thierry Toutin in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 1 (January 2003)PermalinkExtracting 3D free-form surface boundaries of man-made objects from multiple calibrated images : a robust, accurate and high resolving power edgel matching and chaining approach / Franck Jung (2003)PermalinkPotential of reflected intensity of airborne laser scanning systems in roadway features identification / Kiyun Yu in Geomatica, vol 56 n° 4 (December 2002)PermalinkEffects of JPEG compression on the accuracy of photogrammetric point determination / Z. Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 8 (August 2002)PermalinkThe interpolation problem in GPS-supported aerial triangulation / Derek D. Lichti in Photogrammetric record, vol 17 n° 99 (April - September 2002)PermalinkSeparate adjustment in close-range photogrammetry / X. Wang in ISPRS Journal of photogrammetry and remote sensing, vol 55 n° 5-6 (March - June 2001)Permalink3D mapping of buildings : a new line-photogrammetric approach to bundle ajustment / Frank van den Heuvel in GIM international, vol 13 n° 10 (October 1999)Permalink