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Seam-line determination for image mosaicking: a technique minimizing the maximum local mismatch and the global cost / J. Chon in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 1 (January - February 2010)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 65 n° 1 (January - February 2010) . - pp 86 - 92 Titre : Seam-line determination for image mosaicking: a technique minimizing the maximum local mismatch and the global cost Type de document : Article/Communication Auteurs : J. Chon, Auteur ; H. Kim, Auteur ; C. Lin, Auteur Année de publication : 2010 Article en page(s) : pp 86 - 92 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] algorithmique [Termes IGN] mosaïquage d'images [Termes IGN] recherche du chemin optimal, algorithme de Résumé : (Auteur) This paper presents a novel algorithm that selects seam-lines for mosaicking image patches. This technique uses Dijkstra’s algorithm to find a seam-line with the minimal objective function. Since a segment of seam-line with significant mismatch, even if it is short, is more visible than a lengthy one with small differences, a direct summation of the mismatch scores is inadequate. Limiting the level of the maximum difference along a seam-line should be part of the objective in the seam-line selection process. Our technique first determines this desired level of maximum difference, then applies Dijkstra’s algorithm to find the best seam-line. A quantitative measure to evaluate a seam-line is proposed. The measure is defined as the sum of a fixed number of top mismatch scores. The proposed algorithm is compared with other techniques quantitatively and visually about various types of images. Numéro de notice : A2010-231 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2009.09.001 En ligne : https://doi.org/10.1016/j.isprsjprs.2009.09.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30425 [article]

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Investigation of physical sensor models for modelling SPOT 3 orbits / T. Kim in Photogrammetric record, vol 22 n° 119 (September - November 2007)  

Public [article]  inPhotogrammetric record > vol 22 n° 119 (September - November 2007) . - pp 257 - 273 Titre : Investigation of physical sensor models for modelling SPOT 3 orbits Type de document : Article/Communication Auteurs : T. Kim, Auteur ; H. Kim, Auteur ; S. Rhee, Auteur Année de publication : 2007 Article en page(s) : pp 257 - 273 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] capteur (télédétection) [Termes IGN] compensation par faisceaux [Termes IGN] erreur géométrique [Termes IGN] étude de faisabilité [Termes IGN] image SPOT [Termes IGN] modélisation géométrique de prise de vue [Termes IGN] orbite précise [Termes IGN] orientation du capteur Résumé : (Auteur) This paper investigates the feasibility of modelling entire image strips, instead of individual scenes, that have been acquired from the same orbital pass through bundle adjustments. The focus differs from previous researches in the following aspects: firstly, in modelling image strips when control points are available only on a small portion of the strips and, secondly, in comparing the performance of two types of physical sensor models with various sets of adjustment parameters. The models tested were based on modified collinear equations and on satellite orbit and attitude. For each model seven adjustment parameter sets were defined and checked against two SPOT 3 strips of 420 km in length. Results showed that the accuracy of orbit modelling is highly dependent on the choice of parameters to be adjusted. Models with high-order parameters showed exponential error patterns whereas models with low-order parameters showed linear error patterns. Among the two types of sensor models, those based on satellite orbit and attitude yielded better orbit modelling performance. In particular, the best performance was achieved by the model that adjusts attitude biases only; a nearly constant accuracy of better than 2 pixels was maintained over the whole orbital segment of 420 km. This supports the feasibility of orbit modelling. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2007-482 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2007.00441.x En ligne : https://doi.org/10.1111/j.1477-9730.2007.00441.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28845 [article]

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106-07031	RAB	Revue	Centre de documentation	En réserve L003	Disponible