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Spectral properties and reflectance curves of the revealed volcanic rocks in Syria using radiometric measurements / M. Rukieh in International Journal of Remote Sensing IJRS, vol 28 n°15-16 (August 2007)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 28 n°15-16 (August 2007) . - pp 3235 - 3247 Titre : Spectral properties and reflectance curves of the revealed volcanic rocks in Syria using radiometric measurements Type de document : Article/Communication Auteurs : M. Rukieh, Auteur ; A.M. Al-Kafri, Auteur ; A.W. Khalaf, Auteur Année de publication : 2007 Article en page(s) : pp 3235 - 3247 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] éclairement énergétique [Termes IGN] ère quaternaire [Termes IGN] image Landsat-MSS [Termes IGN] image Landsat-TM [Termes IGN] image SPOT [Termes IGN] Jurassique [Termes IGN] radiance [Termes IGN] réflectance spectrale [Termes IGN] roche volcanique [Termes IGN] Syrie Résumé : (Auteur) This research aimed at studying the spectral reflectance intensity of different exposed volcanic rocks in Syria, and drawing their curves by radiometer measurements. In order to reach this goal, we have studied different kinds of volcanic rocks related to different ages, from the Jurassic until the recent Quaternary, and composed of fresh and altered basalt, phonolite and volcanic tuff. We measured the reflected rays of the volcanic rocks by using radiometers equipped with filters for the multi-spectral scanners (TM, MSS and SPOT), and the recorded information was treated according to the equation Reflectance = (Radiance + Dark current) Calibration factor / (Irradiance+ Dark current) Calibration factor. Furthermore, through this equation, we made a calculation for the reflectance intensity of each kind of measured rocks with different channels. We then showed the results of our measurements graphically. After that, we represented the average of the reflectance intensity curves for the various kinds of rocks, and for each kind of the mentioned scanners. We also determined the relative values of reflection in the different spectral channels to cancel the effect of the shadow, and to obtain the best information to help in designing and developing remote sensing survey equipment to recognize the mentioned rocks accurately. Copyright Taylor & Francis Numéro de notice : A2007-356 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160600987886 En ligne : https://doi.org/10.1080/01431160600987886 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28719 [article]

Exemplaires(1)

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080-07091	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Spatio-temporal urban landscape change analysis using the Markov chain model and a modified genetic algorithm / J. Tang in International Journal of Remote Sensing IJRS, vol 28 n°15-16 (August 2007)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 28 n°15-16 (August 2007) . - pp 3255 - 3271 Titre : Spatio-temporal urban landscape change analysis using the Markov chain model and a modified genetic algorithm Type de document : Article/Communication Auteurs : J. Tang, Auteur ; L. Wang, Auteur ; Z. Yao, Auteur Année de publication : 2007 Article en page(s) : pp 3255 - 3271 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] algorithme génétique [Termes IGN] analyse spatio-temporelle [Termes IGN] chaîne de Markov [Termes IGN] Chine [Termes IGN] image Landsat [Termes IGN] modèle de Markov [Termes IGN] prévision [Termes IGN] urbanisation Résumé : (Auteur) The landscape pattern of Daqing City, China, has undergone a significant change over the past 20 years, as a result of the rapid urbanization process. To understand how urbanization has influenced the landscape in Daqing City, the largest base of the petrochemical industry in China, we conducted a series of spatial analyses with landscape pattern maps obtained from Landsat images in 1979, 1990 and 2000. Results indicate that a substantial urban area has been extended during the past two decades, along with the shrinking of wetland and woodland. Spatio-temporal optimization is not a trivial task in developing landscape models. In previous studies, the optimization of spatial and temporal factors was achieved separately, because of the difficulty in formulating them together in a single model. In this study, we adapted the traditional Markov model by obtaining model parameters and neighbourhood rules from a modified genetic algorithm (GA). Model performance was evaluated between the empirical landscape map from the Landsat image and the simulated landscape map from the models. Over three simulation runs, the global deviation (GD) for the three models was 1.37, 1.10 and 1.15, respectively. This result shows that the Markov model and the GA together are able to effectively capture the spatio-temporal trend in the landscape pattern associated with urbanization for this region. The future landscape distribution in 2010, 2030 and 2050 was derived using a spatial Markov model (SMM) for further urban change and planning research. Copyright Taylor & Francis Numéro de notice : A2007-357 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160600962749 En ligne : https://doi.org/10.1080/01431160600962749 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28720 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-07091	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Terrestrial laser scanner to detect landslide displacement fields: a new approach / Giordano Teza in International Journal of Remote Sensing IJRS, vol 28 n°15-16 (August 2007)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 28 n°15-16 (August 2007) . - pp 3425 - 3446 Titre : Terrestrial laser scanner to detect landslide displacement fields: a new approach Type de document : Article/Communication Auteurs : Giordano Teza, Auteur ; A. Galgaro, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 3425 - 3446 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] Alpes [Termes IGN] approximation [Termes IGN] données laser [Termes IGN] données localisées [Termes IGN] données multitemporelles [Termes IGN] effondrement de terrain [Termes IGN] Italie [Termes IGN] itération [Termes IGN] télémétrie laser terrestre Résumé : (Auteur) A terrestrial laser scanner (TLS) allows the generation of a detailed model of a landslide surface. In this way, when two or more georeferenced models obtained by multi-temporal scans are available, the landslide displacement field can be computed. Nevertheless, such a computation is a relatively complex task because the recognition of correspondences among the multi-temporal models is required. The Iterative Closest Point (ICP) algorithm allows the alignment of two 3D objects having a common part by iterative shape matching. A new method for the automatic calculation of a landslide displacement field is presented here. It is based on a piecewise application of the ICP algorithm and is made possible by the robustness of this algorithm against noise and small morphological modifications. After a series of numerical experimentations, this method was successfully applied to two test sites located in the North-Eastern Italian Alps affected by high-risk landslides of the slump type (Perarolo di Cadore and Lamosano) with very different observational conditions. Copyright Taylor & Francis Numéro de notice : A2007-358 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160601024234 En ligne : https://doi.org/10.1080/01431160601024234 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28721 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-07091	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Generation of mosaiced digital true orthophotographs from multispectral and Lidar data / N. Balic in International Journal of Remote Sensing IJRS, vol 28 n°15-16 (August 2007)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 28 n°15-16 (August 2007) . - pp 3679 - 3688 Titre : Generation of mosaiced digital true orthophotographs from multispectral and Lidar data Type de document : Article/Communication Auteurs : N. Balic, Auteur ; H. Weinacker, Auteur ; B. Koch, Auteur Année de publication : 2007 Article en page(s) : pp 3679 - 3688 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Orthophotographie, orthoimage [Termes IGN] données lidar [Termes IGN] image multibande [Termes IGN] logiciel de traitement d'image [Termes IGN] mosaïquage d'images [Termes IGN] orthoimage intégrale [Termes IGN] orthophotoplan numérique Résumé : (Auteur) A software program has been developed to generate true orthophotographs using multispectral and lidar data. To accomplish this, the obscured points were first identified in the acquired conventional orthophotographs. Next, the obscured points were replaced with corresponding unobscured points from the neighbouring orthophotographs. Finally, the resulting orthophotographs were merged into a mosaic. This paper provides insight into the generation procedure, developed methods and results obtained in the course of the creation of the digital true orthophotograph. Copyright Taylor & Francis Numéro de notice : A2007-359 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160601034894 En ligne : https://doi.org/10.1080/01431160601034894 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28722 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-07091	RAB	Revue	Centre de documentation	En réserve L003	Disponible