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Characterizing errors in airborne Laser altimetry data to extract soil roughness / Ian J. Davenport in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 42 n° 10 (October 2004) . - pp 2130 - 2141 Titre : Characterizing errors in airborne Laser altimetry data to extract soil roughness Type de document : Article/Communication Auteurs : Ian J. Davenport, Auteur ; N. Holden, Auteur ; R.J. Gurney, 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 2130 - 2141 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] altitude [Termes IGN] cohérence des données [Termes IGN] erreur aléatoire [Termes IGN] erreur de mesure [Termes IGN] erreur moyenne quadratique altimétrique [Termes IGN] rugosité du sol [Termes IGN] surface du sol [Termes IGN] système de positionnement par satellites [Termes IGN] télémétrie laser aéroporté Résumé : (Auteur) Airborne laser altimetry has the potential to make frequent detailed observations that are important for many aspects of studying land surface processes. However, the uncertainties inherent in airborne laser altimetry data have rarely been well measured. Uncertainty is often specified as generally as 20 cm in elevation and 40 cm planimetric. To better constrain these uncertainties, we present an analysis of several datasets acquired specifically to study the temporal consistency of laser altimetry data and, thus, assess its operational value. The error budget has three main components, each with a time regime. For measurements acquired less than 50 ms apart, elevations have a local standard deviation in height of 3.5 cm, enabling the local measurement of surface roughness of the order of 5 cm. Points acquired seconds apart acquire an additional random error due to differential geographic positioning system fluctuation. Measurements made up to an hour apart show an elevation drift of 7 cm over a half hour. Over months, this drift gives rise to a random elevation offset between swathes, with an average of 6.4 cm. The root mean square planimetric error in point location was derived as 37.4 cm. We conclude by considering the consequences of these uncertainties on the principle application of laser altimetry in the U.K. intertidal zone monitoring. Numéro de notice : A2004-455 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.834648 En ligne : https://doi.org/10.1109/TGRS.2004.834648 Format de la ressource électronique : URl article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26975 [article]

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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)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 42 n° 10 (October 2004) . - pp 2121 - 2129 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] stéréoscopie Résumé : (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 [article]

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On the possibility of automatic multisensor image registration / Jordi Inglada in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 42 n° 10 (October 2004) . - pp 2104 - 2120 Titre : On the possibility of automatic multisensor image registration Type de document : Article/Communication Auteurs : Jordi Inglada, Auteur ; A. Giros, 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 2104 - 2120 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image mixte [Termes IGN] analyse comparative [Termes IGN] coefficient de corrélation [Termes IGN] corrélation automatique de points homologues [Termes IGN] extraction manuelle [Termes IGN] image multicapteur [Termes IGN] image optique [Termes IGN] image radar [Termes IGN] point de vérification [Termes IGN] précision infrapixellaire [Termes IGN] superposition d'images Résumé : (Auteur) Multisensor image registration is needed in a large number of applications of remote sensing imagery. The accuracy achieved with usual methods (manual control points extraction, estimation of an analytical deformation model) is not satisfactory for many applications where a subpixel accuracy for each pixel of the image is needed (change detection or image fusion, for instance). Unfortunately, there are few works in the literature about the fine registration of multisensor images and even less about the extension of approaches similar to those based on fine correlation for the case of monomodal imagery. In this paper, we analyze the problem of the automatic multisensor image registration and we introduce similarity measures which can replace the correlation coefficient in a deformation map estimation scheme. We show an example where the deformation map between a radar image and an optical one is fully automatically estimated. Numéro de notice : A2004-453 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.835294 En ligne : https://doi.org/10.1109/TGRS.2004.835294 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26973 [article]

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vol 42 n° 10 - October 2004 - selected papers International Geoscience and Remote Sensing Symposium (IGARSS'03): learning from Earth's and colors, [actes] (Bulletin de IEEE Transactions on geoscience and remote sensing) / Geoscience and remote sensing society  

Public [n° ou bulletin]  est un bulletin de IEEE Transactions on geoscience and remote sensing / IEEE Geoscience and remote sensing society (Etats-Unis) (1986 -)   Titre : vol 42 n° 10 - October 2004 - selected papers International Geoscience and Remote Sensing Symposium (IGARSS'03): learning from Earth's and colors, [actes] Type de document : Périodique Auteurs : Geoscience and remote sensing society, Auteur Année de publication : 2004 Conférence : IGARSS 2003, International Geoscience And Remote Sensing Symposium 21/07/2003 25/07/2003 Toulouse France Proceedings IEEE Langues : Anglais (eng) Numéro de notice : 065-0410 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Numéro de périodique En ligne : http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=29599&punumber=36 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=21422 [n° ou bulletin]

Contient

• Spatiotriangulation with multisensor VIR/SAR / Thierry Toutin in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)  
• On the possibility of automatic multisensor image registration / Jordi Inglada in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)  
• 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)  
• Characterizing errors in airborne Laser altimetry data to extract soil roughness / Ian J. Davenport in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)  

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Spatiotriangulation with multisensor VIR/SAR / Thierry Toutin in IEEE Transactions on geoscience and remote sensing, vol 42 n° 10 (October 2004)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 42 n° 10 (October 2004) . - pp 2096 - 2103 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] spatiotriangulation Résumé : (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 [article]

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Geometrical performances of the VEGETATION products / Sylvia Sylvander (2003)  

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Integrating textural and geometric information for an automatic bridge detection system / Nicolas Lomenie (2003)  

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Materials' BRDF retrieval from multiview digital aerial images / Gilles Martinoty (2003)  

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Remotely sensed image segmentation using an object point process / Sébastien Drot (2003)  

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