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Spatial accuracy of orthorectified Ikonos imagery and historical aerial photographs across five sites in China / H. Wang in International Journal of Remote Sensing IJRS, vol 26 n° 9 (May 2005)
[article]
Titre : Spatial accuracy of orthorectified Ikonos imagery and historical aerial photographs across five sites in China Type de document : Article/Communication Auteurs : H. Wang, Auteur ; E.C. Ellis, Auteur Année de publication : 2005 Article en page(s) : pp 1893 - 1911 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse diachronique
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Chine
[Termes IGN] détection de changement
[Termes IGN] image à résolution métrique
[Termes IGN] image Ikonos
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] photographie aérienne
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) High-resolution ( 1m) satellite imagery and archival World War 2 era (WW2) aerial photographs are currently available to support high-resolution longterm change measurements at sites across China. A major limitation to these measurements is the spatial accuracy with which this imagery can be orthorectified and co-registered. We orthorectified IKONOS 1m resolution GEO-format imagery and WW2 aerial photographs across five 100km2 rural sites in China with terrain ranging from flat to hilly to mountainous. Ground control points (GCPs) were collected uniformly across 100 km2 IKONOS scenes using a differential Global Positioning Systems (GPS) field campaign. WW2 aerial photos were co-registered to orthorectified IKONOS imagery using bundle block adjustment and rational function models. GCP precision, terrain relief and the number and distribution of GCPs significantly influenced image orthorectification accuracy. Root mean square errors (RMSEs) at GCPs for IKONOS imagery were Numéro de notice : A2005-256 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160512331326684 En ligne : https://doi.org/10.1080/01431160512331326684 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27392
in International Journal of Remote Sensing IJRS > vol 26 n° 9 (May 2005) . - pp 1893 - 1911[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 080-05091 RAB Revue Centre de documentation En réserve L003 Exclu du prêt The utility of texture analysis to improve per-pixel classification for high to very high spatial resolution imagery / Anne Puissant in International Journal of Remote Sensing IJRS, vol 26 n° 4 (February 2005)
[article]
Titre : The utility of texture analysis to improve per-pixel classification for high to very high spatial resolution imagery Type de document : Article/Communication Auteurs : Anne Puissant, Auteur ; Jacky Hirsch, Auteur ; Christiane Weber, Auteur Année de publication : 2005 Article en page(s) : pp 733 - 745 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse texturale
[Termes IGN] classification automatique
[Termes IGN] extraction automatique
[Termes IGN] image à haute résolution
[Termes IGN] image à très haute résolution
[Termes IGN] milieu urbain
[Termes IGN] précision de la classification
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) Earth observation data are becoming available at increasingly finer resolutions. Sensors already in existence (IKONOS, Quickbird, SPOT 5, Orbview) or due to be launched in the near future will reach 1-5 m resolution. These very high resolution (VHR) data will provide more details of the urban areas, but it seems evident that they will create additional problems in terms of information extraction using automatic classification. In this framework, this paper examines the potential of the spectral/textural approach to improve the classification accuracy of intra-urban land cover types. The utility of the textural analysis was measured in comparison with multi-spectral per-pixel classifications. Haralick's second-order statistics were applied to the co-occurrence matrix. Four texture indices with six window sizes created from panchromatic images were tested on images at high to very high resolutions (10-1 m). The results show that the optimal index improving the global classification accuracy is the homogeneity measure, with a 7 x 7 window size. Moreover, for 1 m images, texture measure of homogeneity allows one to decrease the shadows. Numéro de notice : A2005-053 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160512331316838 En ligne : https://doi.org/10.1080/01431160512331316838 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27191
in International Journal of Remote Sensing IJRS > vol 26 n° 4 (February 2005) . - pp 733 - 745[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 080-05041 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Aerial mapping by consumer camcoders / C.A. Rokhmana in GIM international, vol 19 n° 2 (February 2005)
[article]
Titre : Aerial mapping by consumer camcoders Type de document : Article/Communication Auteurs : C.A. Rokhmana, Auteur Année de publication : 2005 Article en page(s) : pp 40 - 43 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] caméra vidéo numérique
[Termes IGN] capteur aérien
[Termes IGN] étalonnage géométrique
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) Developing countries still have a need for mapping systems that are low-cost, simple to operate by local operator fast in production and yet meet the needs of the application. A satellite mapping system can be a good choice, but cloud coverage and revisit time often limit its application, especially in tropical areas. The author shows that Aerial Videography (AV) mapping based on a consumer camcorder meets mapping requirements. Numéro de notice : A2005-036 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27174
in GIM international > vol 19 n° 2 (February 2005) . - pp 40 - 43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-05021 SL Revue Centre de documentation Revues en salle Disponible Effect of Jpeg2000 on the information and geometry content of aerial photo compression / J.K. Liu in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 2 (February 2005)
[article]
Titre : Effect of Jpeg2000 on the information and geometry content of aerial photo compression Type de document : Article/Communication Auteurs : J.K. Liu, Auteur ; H.C. Wu, Auteur ; T.Y. Shih, Auteur Année de publication : 2005 Article en page(s) : pp 157 - 167 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] compression d'image
[Termes IGN] compression par ondelettes
[Termes IGN] contrôle qualité
[Termes IGN] erreur moyenne quadratique
[Termes IGN] format JPEG
[Termes IGN] image aérienne
[Termes IGN] point de repère
[Termes IGN] qualité des données
[Termes IGN] qualité géométrique (image)
[Termes IGN] qualité radiométrique (image)
[Termes IGN] rapport signal sur bruit
[Termes IGN] transformation en cosinus discrèteRésumé : (Auteur) The standardization effort of the next ISO standard for compression of the still image, JPEG2000, has recently reached International Standard (IS) status. This wavelet-based standard outperforms the Discrete Cosine Transform (DCT) based JPEG in terms of compression ratio, as well as, quality. In this study, the performance of JPEG2000 is evaluated for aerial image compressions. Different compression ratios are applied to scanned aerial photos at the 1:5 000 scale. Both the image quality measurements and the accuracy of photogrammetric point determination aspects are examined. The evaluation of image quality is based on visual analysis of the objects in the scene and on the computation of numerical indices, including RMSE, entropy, and Peak Signal-to-Noise Ratio (PSNR). The geometric quality of JPEG2000 with different compression ratios is studied for some photogrammetric operations, including interior orientation, relative orientation, absolute orientation, and DSM generation. The objective of this study is to explore the possibility of JPEG2000 for replacing JPEG as a standard in photogrammetric operations. Numéro de notice : A2005-029 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.71.2.157 En ligne : https://doi.org/10.14358/PERS.71.2.157 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27167
in Photogrammetric Engineering & Remote Sensing, PERS > vol 71 n° 2 (February 2005) . - pp 157 - 167[article]A least squares-based method for adjusting the boundaries of area objects / X. Tong-Tong in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 2 (February 2005)
[article]
Titre : A least squares-based method for adjusting the boundaries of area objects Type de document : Article/Communication Auteurs : X. Tong-Tong, Auteur ; Wei Shi, Auteur ; D. Liu, Auteur Année de publication : 2005 Article en page(s) : pp 189 - 195 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] cadastre étranger
[Termes IGN] cohérence géométrique
[Termes IGN] implémentation (informatique)
[Termes IGN] limite indéterminée
[Termes IGN] méthode des moindres carrés
[Termes IGN] objet géographique zonal
[Termes IGN] parcelle cadastrale
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] Shanghai (Chine)
[Termes IGN] système d'information géographiqueRésumé : (Auteur) In this paper a least squares-based method is proposed for adjusting the boundaries of area objects in a GIS that is designed particularly for solving inconsistencies between the areas of digitized and registered land parcels. The principle of this approach is taking the size of the registered area of a land parcel as its true value and to adjust the geometric position of the boundaries of the digitized parcel. First, a generic area adjustment model is derived by incorporating the following two categories of constraints: (a) attribute constraint: the size of the true area of the parcel, and (b) geometric constraints: such as, straight lines, right angles and certain distances. Second, the methods used to adjust the areas of the parcels for different cases are presented. Third, the implementation of the proposed model is illustrated using several case studies. The results of the application and the corresponding analysis demonstrate that the proposed approach is able to maintain a consistency between the areas of the digitized and registered parcels. This study has solved one of the most critical problems in developing a land/cadastral information system, and this solution has been adopted in the processing of real world cadastral data in Shanghai and other cities in China. Numéro de notice : A2005-030 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.71.2.189 En ligne : https://doi.org/10.14358/PERS.71.2.189 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27168
in Photogrammetric Engineering & Remote Sensing, PERS > vol 71 n° 2 (February 2005) . - pp 189 - 195[article]3D building facade reconstruction under mesh form from multiple wide angle views / Lionel Pénard (2005)PermalinkAutomated quality control for orthoimages and DEMs / J.K. Höhle in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 1 (January 2005)PermalinkEvaluation of 3D city model production from Pleaides-HR satellite images and 3D ground maps / David Flamanc (2005)PermalinkFour years of Landsat-7 on orbit geometric calibration and performance / D. Scott Lee in IEEE Transactions on geoscience and remote sensing, vol 42 n° 12 (December 2004)PermalinkFiltering airborne Laser scanner data: a wavelet-based clustering method / T. Thuy in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 11 (November 2004)PermalinkAccuracy analysis, DEM generation and validation using russian TK-350 stereo-images / G. Buyuksalih in Photogrammetric record, vol 19 n° 107 (September - November 2004)PermalinkAccuracy of the coefficient expansion of the transverse Mercator projection / E. Enriquez in International journal of geographical information science IJGIS, vol 18 n° 6 (october 2004)PermalinkAnalytical methods of assessing the image quality associated with digital and photographic imaging systems / G.H. Thomson in Photogrammetric record, vol 19 n° 107 (September - November 2004)PermalinkL'extraction du bâti à partir d'images satellitaires THRS / Serge Lhomme in Revue internationale de géomatique, vol 14 n° 3 - 4 (septembre 2004 – février 2005)PermalinkPrecision of points computed from intersections of lines or planes / P. Cederholm in Surveying and land information science, vol 64 n° 3 (01/09/2004)Permalink