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Extracting photogrammetric ground control from lidar DEMs for change detection / T.D. James in Photogrammetric record, vol 21 n° 116 (December 2006 - February 2007)
[article]
Titre : Extracting photogrammetric ground control from lidar DEMs for change detection Type de document : Article/Communication Auteurs : T.D. James, Auteur ; T. Murray, Auteur ; N.E. Barrand, Auteur Année de publication : 2006 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] Angleterre
[Termes IGN] détection de changement
[Termes IGN] données lidar
[Termes IGN] modèle numérique de surface
[Termes IGN] photographie aérienne
[Termes IGN] point d'appui
[Termes IGN] réalité de terrain
[Termes IGN] topographie localeRésumé : (Auteur) Research has shown the importance of measuring topography for surface change detection and that the use of remote sensing methods is ideal for this application. A prerequisite for measuring change is a historical data-set that covers the time period of interest. Many remote methods of topographic data collection such as lidar are relatively recent developments and therefore cannot provide records longer than about a decade. Alternatively, aerial photography has been in common use since the early 20th century and archives upwards of 50years are therefore not uncommon. While photogrammetry is dependent on well distributed, high quality ground control points (GCPs), such data has been successfully applied retroactively. Therefore, contemporary lidar data, which requires little ground-truth data, should be an ideal source of GCPs for controlling historical aerial photographs. This study aims to evaluate the success with which GCPs can be extracted from a high-resolution lidar data-set for controlling aerial photography for digital elevation model (DEM) production. Using a data-set collected in Upper Wharfedale, northern England, GCPs were measured both by means of a lidar data-set and by using traditional field-based methods. The results showed that while the use of lidar-derived ground control produced a DEM of inferior quality, increasing the number of GCPs used in the model produced results comparable to the GPS-controlIed DEM. These results are significant especially for surface change detection research in remote areas where high quality ground control is difficult to secure. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2006-540 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2006.00397.x En ligne : https://doi.org/10.1111/j.1477-9730.2006.00397.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28263
in Photogrammetric record > vol 21 n° 116 (December 2006 - February 2007)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-06041 RAB Revue Centre de documentation En réserve L003 Disponible Indexing fast moving objects for kNN queries based on nearest landmarks / D. Lin in Geoinformatica, vol 10 n° 4 (December 2006)
[article]
Titre : Indexing fast moving objects for kNN queries based on nearest landmarks Type de document : Article/Communication Auteurs : D. Lin, Auteur ; R. Zhang, Auteur ; A. Zhou, Auteur Année de publication : 2006 Article en page(s) : pp 423 - 445 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] arbre (mathématique)
[Termes IGN] classification barycentrique
[Termes IGN] index spatial
[Termes IGN] mise à jour de base de données
[Termes IGN] objet mobile
[Termes IGN] point de repère
[Termes IGN] requête spatialeRésumé : (Auteur) With the rapid advancements in positioning technologies such as the Global Positioning System (GPS) and wireless communications, the tracking of continuously moving objects has become more convenient. However, this development poses new challenges to database technology since maintaining up-to-date information regarding the location of moving objects incurs an enormous amount of updates. Existing indexes can no longer keep up with the high update rate while providing speedy retrieval at the same time. This study aims to improve k nearest neighbor (kNN) query performance while reducing update costs. Our approach is based on an important observation that queries usually occur around certain places or spatial landmarks of interest, called reference points. We propose the Reference-Point-based tree (RP-tree), which is a two-layer index structure that indexes moving objects according to reference points. Experimental results show that the RP-tree achieves significant improvement over the TPR-tree. Copyright Springer Numéro de notice : A2006-546 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1007/s10707-006-0341-9 En ligne : https://doi.org/10.1007/s10707-006-0341-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28269
in Geoinformatica > vol 10 n° 4 (December 2006) . - pp 423 - 445[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-06041 RAB Revue Centre de documentation En réserve L003 Disponible Integration of GPS and remote sensing into GIS: a case study of rectifying satellite imagery using uncorrected coordinates in different scenes / J. Gao in Geocarto international, vol 21 n° 4 (December 2006 - February 2007)
[article]
Titre : Integration of GPS and remote sensing into GIS: a case study of rectifying satellite imagery using uncorrected coordinates in different scenes Type de document : Article/Communication Auteurs : J. Gao, Auteur ; Y. Zha, Auteur Année de publication : 2006 Article en page(s) : pp 59 - 65 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] base de données localisées
[Termes IGN] carte topographique
[Termes IGN] coordonnées GPS
[Termes IGN] correction d'image
[Termes IGN] géoréférencement
[Termes IGN] image Landsat-TM
[Termes IGN] image multibande
[Termes IGN] image panchromatique
[Termes IGN] image SPOT
[Termes IGN] limite de résolution géométrique
[Termes IGN] point d'appui
[Termes IGN] positionnement par GPS
[Termes IGN] système d'information géographiqueRésumé : (Auteur) This paper explores the feasibility of integrating GPS and remote sensing data into a GIS database through rectification of satellite images of both urban and rural areas using uncorrected GPS coordinates. A GPS receiver was used to log the coordinates of 25 ground control points (GCPs) in a rural area and 20 GCPs in an urban area. Their coordinates were also read from topographic maps. Both sets of coordinates were used to rectify Landsat TM, and SPOT panchromatic (PAN) and multispectral (XL) images. It is found that none of the GPS coordinates are able to achieve an acceptable accuracy level of integration unless some inaccurate GCPs are excluded. The percentage of useable GCPs varies from less than 50 to nearly 90, depending on the spatial resolution of the image and the ease of GCP identification. On average, the difficulty in identifying GCPs on the ground and the image degrades integration accuracy by up to one pixel. Copyright Geocarto international Numéro de notice : A2006-587 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040608542403 Date de publication en ligne : 04/01/2008 En ligne : https://doi.org/10.1080/10106040608542403 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28310
in Geocarto international > vol 21 n° 4 (December 2006 - February 2007) . - pp 59 - 65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 059-06041 RAB Revue Centre de documentation En réserve L003 Disponible Pros and cons of the orientation of very high resolution optical space images / Karsten Jacobsen in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : Pros and cons of the orientation of very high resolution optical space images Type de document : Article/Communication Auteurs : Karsten Jacobsen, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 41 - 47 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] analyse comparative
[Termes IGN] GPS-INS
[Termes IGN] image à résolution métrique
[Termes IGN] image Ikonos
[Termes IGN] image optique
[Termes IGN] image ORBVIEW
[Termes IGN] image Quickbird
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] orientation du capteur
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] transformation linéaire directeRésumé : (Auteur) Very high resolution optical space images are coming more and more into competition to classical aerial images making them more important for mapping projects. The orientation process of the dominating CCD-line scanner images taken from space is quite different from the orientation of perspective photos. Different image products like nearly original images and images projected to a plane with constant height are available, this requires corresponding orientation solutions. All optical satellites are equipped with direct sensor orientation based on a positioning system, gyros and star sensors, so they can estimate the orientation parameters. For IKONOS, QuickBird and OrbView-3, this can be made without control points with a standard deviation of the ground coordinates in the range of 10 m and better. The orientation information is available as view direction from the scene centre or start of scene or as ephemeris and as rational polynomial coefficients (RPCs). This allows the determination of the scene orientation by geometric reconstruction or bias corrected RPCs using control points. In addition approximations like 3D-affine transformation, direct linear transformation and terrain related RPCs are in use. The accuracy of the methods is compared in relation to the number and distribution of the control points and the limitations of the approximations are investigated. The approximations of the orientations by 3D affine transformation and direct linear transformation can only handle images projected to a plane with constant height like IKONOS and QuickBird or Standard. For original images they are not leading to acceptable accuracy. In any case they require more and three-dimensional well distributed control points. Copyright SFPT Numéro de notice : A2006-635 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T02-06.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28358
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 41 - 47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Extraction of ground control points (GCPs) from synthetic aperture radar images and SRTM DEM / S.H. Hong in International Journal of Remote Sensing IJRS, vol 27 n°18 - 19 - 20 (October 2006)
[article]
Titre : Extraction of ground control points (GCPs) from synthetic aperture radar images and SRTM DEM Type de document : Article/Communication Auteurs : S.H. Hong, Auteur ; Hyung-Sup Jung, Auteur ; J.S. Won, Auteur Année de publication : 2006 Article en page(s) : pp 3813 - 3829 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] écart type
[Termes IGN] extraction
[Termes IGN] image ERS-SAR
[Termes IGN] image IRS
[Termes IGN] MNS SRTM
[Termes IGN] modèle numérique de surface
[Termes IGN] point d'appui
[Termes IGN] radargrammétrieRésumé : (Auteur) Qualified ground control points (GCPs) are crucial in the geolocation of a remotely sensed image. If a region has no published map, the geographical coordinates of GCPs must be obtained indirectly. Although these can be re-constructed from a synthetic aperture radar (SAR) image using sensor position and velocity, this conventional method does not provide accurate GCPs owing to the variable elevations of actual topography. We propose an inverse geolocation method for GCPs by SAR simulation. This improves the accuracy of extracted GCPs by accommodating topographic effects, and requires a high-resolution digital elevation model (DEM) and SAR with precise orbit data. The errors in the northing derive mainly from the imaging pulse time, and were improved by applying an azimuth time correction. In this study ERS SAR data with precise Delft orbit and shuttle radar topography mission (SRTM) DEM were used. Mean values for the planimetric distance error in the GCPs were 4.1 and 5.4 m with standard deviations of 10.6 and 16.9 m in northing and easting, respectively. The obtained GCPs were applied to an IRS image for geo-rectification, and the result was mean image positional errors of 3.6 and 2.7 m with standard deviations of 8.4 and 15.4 m in northing and easting, respectively. The root mean square errors are 9.0 and 15.3 m in northing and easting, respectively. Copyright Taylor & Francis Numéro de notice : A2006-457 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160600658115 En ligne : https://doi.org/10.1080/01431160600658115 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28181
in International Journal of Remote Sensing IJRS > vol 27 n°18 - 19 - 20 (October 2006) . - pp 3813 - 3829[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 080-06101 RAB Revue Centre de documentation En réserve L003 Disponible Geometric validation of imagery and products from a high performance airborne digital sensor / Jon P. Mills in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)PermalinkTests and performance evaluation of DMC images and new methods for their processing / Li Zhang in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)PermalinkError assessment in two lidar-derived TIN datasets / M.H. Peng in Photogrammetric Engineering & Remote Sensing, PERS, vol 72 n° 8 (August 2006)PermalinkA technique for generating natural colour images from false colour composite images / S.K. Patra in International Journal of Remote Sensing IJRS, vol 27 n°12-13-14 (July 2006)PermalinkCalibration of the optech ALTM-3100 laser scanner intensity data using brightness targets / E. Ahokas in Revue Française de Photogrammétrie et de Télédétection, n° 182 (Juin 2006)PermalinkComparison of two physical sensor models for satellite images: position-rotation model and orbit-attitude model / T. Kim in Photogrammetric record, vol 21 n° 114 (June - August 2006)PermalinkAccuracy analysis for DSM and orthoimages derived from SPOT HRS stereo data using direct georeferencing / Peter Reinartz in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 3 (May 2006)PermalinkDEM generation from SPOT-5 3-fold along track stereoscopic imagery using autocalibration / W. Kornus in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 3 (May 2006)PermalinkGeneration of DSMs from SPOT-5 in-track HRS and across-track HRG stereo data using spatiotriangulation and autocalibration / Thierry Toutin in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 3 (May 2006)PermalinkMulti-image matching for DSM generation from Ikonos imagery / Li Zhang in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 3 (May 2006)Permalink