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A spectral gradient difference based approach for land cover change detection / Jun Chen in ISPRS Journal of photogrammetry and remote sensing, vol 85 (November 2013)
[article]
Titre : A spectral gradient difference based approach for land cover change detection Type de document : Article/Communication Auteurs : Jun Chen, Auteur ; Miao Lu, Auteur ; Xuehong Chen, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 1 - 12 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] appariement de formes
[Termes IGN] détection de changement
[Termes IGN] gradient
[Termes IGN] image Landsat-ETM+
[Termes IGN] image Landsat-TM
[Termes IGN] occupation du solRésumé : (Auteur) Change detection with remotely sensed imagery plays an important role in land cover mapping, process analysis and dynamic information services. Euclidean distance, correlation and other mathematic metrics between spectral curves have been used to calculate change magnitude in most change detection methods. However, many pseudo changes would also be detected because of inter-class spectral variance, which remains a significant challenge for operational remote sensing applications. In general, different land cover types have their own spectral curves characterized by typical spectral values and shapes. These spectral values are widely used for designing change detection algorithms. However, the shape of spectral curves has not yet been fully considered. This paper proposes to use spectral gradient difference (SGD) to quantitatively describe the spectral shapes and the differences in shape between two spectra. Change magnitude calculated in the new spectral gradient space is used to detect the change/no-change areas. Then, a chain model is employed to represent the SGD pattern both qualitatively and quantitatively. Finally, the land cover change types are determined by pattern matching with the knowledgebase of reference SGD patterns. The effectiveness of this SGD-based change detection approach was verified by a simulation experiment and a case study of Landsat data. The results indicated that the SGD-based approach was superior to the traditional methods. Numéro de notice : A2013-604 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.07.009 En ligne : https://doi.org/10.1016/j.isprsjprs.2013.07.009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32740
in ISPRS Journal of photogrammetry and remote sensing > vol 85 (November 2013) . - pp 1 - 12[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 081-2013111 RAB Revue Centre de documentation En réserve L003 Disponible Symbol stores: sharing maps symbol for emergency management / Anthony C. Robinson in Cartography and Geographic Information Science, vol 40 n° 5 (November 2013)
[article]
Titre : Symbol stores: sharing maps symbol for emergency management Type de document : Article/Communication Auteurs : Anthony C. Robinson, Auteur ; Scott Pezanowski, Auteur ; Sarah Troedson, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 415 - 426 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique
[Termes IGN] cartographie d'urgence
[Termes IGN] communication cartographique
[Termes IGN] partage de données localisées
[Termes IGN] signe conventionnel
[Termes IGN] symbole graphiqueRésumé : (auteur) Maps are a primary means for supporting information sharing and collaboration in emergency management and crisis situations. While a variety of formalized map symbol standards for emergency contexts exist, they have not been widely adopted by mapmakers. Informal symbol conventions are commonly used within emergency management stakeholder groups, but until now there has not been a flexible mechanism for discovering, sharing, and previewing these symbol sets among mapmakers. In this paper, we describe the design and development of the Symbol Store, a visually enabled, web-based interactive tool intended to help mapmakers share point symbols. The Symbol Store allows users to browse symbols by keyword, category tags, and contributors. It also allows for symbols to be previewed on realistic maps prior to download. An initial prototype of the Symbol Store was evaluated by flood mapping experts from the State of California, and the results of this user study led to multiple refinements now implemented in the public version of Symbol Store located at www.symbolstore.org. Numéro de notice : A2013-785 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2013.803833 En ligne : https://doi.org/10.1080/15230406.2013.803833 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76132
in Cartography and Geographic Information Science > vol 40 n° 5 (November 2013) . - pp 415 - 426[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 032-2013051 RAB Revue Centre de documentation En réserve L003 Disponible Assessing the effect of snow/water obstructions on the measurement of tree seedlings in a large-scale temperate forest inventory / C. W. Woodall in Forestry, an international journal of forest research, vol 86 n° 4 (October 2013)
[article]
Titre : Assessing the effect of snow/water obstructions on the measurement of tree seedlings in a large-scale temperate forest inventory Type de document : Article/Communication Auteurs : C. W. Woodall, Auteur ; James A. Westfall, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 421 - 427 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Etats-Unis
[Termes IGN] forêt tempérée
[Termes IGN] impact sur les données
[Termes IGN] inventaire forestier étranger (données)
[Termes IGN] neige
[Vedettes matières IGN] Inventaire forestierRésumé : (auteur) National-scale forest inventories have endeavoured to include holistic measurements of forest health inclusive of attributes such as downed dead wood and tree regeneration that occur in the forest understory. Inventories may require year-round measurement of inventory plots with some of these measurements being affected by seasonal obstructions (e.g. snowpacks and seasonal flooding). In order to assess the potential effects that snow/water obstructions may have on the measurement/analysis of forest seedlings across large scales, the differences in seedling abundance between two inventory measurements (∼5-year remeasurement period) and as affected by snow/water depth was ascertained using a repeated forest inventory across the eastern US. Results indicate that there is a general trend of decreasing seedling density over time (−33.16 seedlings ha−1 year−1) in the eastern US, with snow/water depths in excess of 15 cm significantly affecting resulting estimates of seedling abundance. Although snow/water obstruction to seedling measurement occurred on ∼9 per cent of inventory plots across the eastern US, snow was a much more common situation occurring on nearly 50 per cent of plots (at time 1, 2 or both) at high latitudes (>45°). Given the statistically significant effect of snow/water on seedling abundance estimates, tree regeneration assessments should not include observations obstructed by snow/water depths that exceed minimum seedling heights. Furthermore, seedling abundance inventories may mitigate the influence of measurement obstructions by sampling only during the summer or incorporating climate information into their sampling logistics. Numéro de notice : A2013-788 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1093/forestry/cpt013 En ligne : https://doi.org/10.1093/forestry/cpt013 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78312
in Forestry, an international journal of forest research > vol 86 n° 4 (October 2013) . - pp 421 - 427[article]Conceptual basis for a cultural heritage data model for INSPIRE / César Parcero-Oubiña in Revue internationale de géomatique, vol 23 n° 3 - 4 (septembre 2013 - février 2014)
[article]
Titre : Conceptual basis for a cultural heritage data model for INSPIRE Type de document : Article/Communication Auteurs : César Parcero-Oubiña, Auteur ; Juan Manuel Vincent-Garcia, Auteur ; Antonio Uriarte-Gonzalez, Auteur ; Isabel Del-Bosque-Gonzalez, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 445 - 467 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] infrastructure nationale des données localisées
[Termes IGN] INSPIRE
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] patrimoine culturelRésumé : (Auteur) In addition to its legal implications, INSPIRE represents the most important movement towards a true implementation of interoperable spatial data services. Cultural Heritage is a thematic field that is not considered separately within INSPIRE, although some portions of it do fall within the category of Protected Sites, listed in Annex I, and also in the theme Buildings in Annex III. Developing an extended schema for Cultural Heritage data within the INSPIRE framework is an essential step towards allowing heritage information to become yet another part of the wider field of spatial information. Our aim is to achieve this by taking advantage of the benefits of the “INSPIRE movement”. This paper presents some insights into the development of such an application schema, focusing on some general, conceptual considerations upon which that specific data model has been built. Numéro de notice : A2013-720 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3166/rig.23.445-467 En ligne : https://doi.org/10.3166/rig.23.445-467 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32856
in Revue internationale de géomatique > vol 23 n° 3 - 4 (septembre 2013 - février 2014) . - pp 445 - 467[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 047-2013031 SL Revue Centre de documentation Revues en salle Exclu du prêt Improvement and application of the conifer forest multiangular hybrid GORT model MGeoSAIL / Qiang Wang in IEEE Transactions on geoscience and remote sensing, vol 51 n° 10 (October 2013)
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Titre : Improvement and application of the conifer forest multiangular hybrid GORT model MGeoSAIL Type de document : Article/Communication Auteurs : Qiang Wang, Auteur ; Yong Pang, Auteur ; Zengyuan Li, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 5047 - 5059 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] Chine
[Termes IGN] distribution du coefficient de réflexion bidirectionnelle BRDF
[Termes IGN] forêt
[Termes IGN] houppier
[Termes IGN] image PROBA-CHRIS
[Termes IGN] Leaf Area Index
[Termes IGN] modèle de transfert radiatif
[Termes IGN] PinophytaRésumé : (Auteur) Compared with traditional remote sensing, multiangular observation provides 3-D structural information of a forest through different directional observations. The MGeoSAIL model, suitable for multiangular observations, was developed based on the single-angle model GeoSAIL. The MGeoSAIL model combines the geometric-optic model with the radiation transfer model and has the advantages of both models. Thus, it is more accurate and feasible. The geometric-optic model calculates the amount of shadowed and illuminated components within a forest scene, while the radiation transfer model [Scattering by Arbitrarily Inclined Leaves (SAIL)] calculates the reflectance and transmittance of tree crowns. The uniform index is introduced to characterize the relationship quantitatively between tree distribution pattern and the bidirectional reflectance distribution function (BRDF). The simulation results show that the MGeoSAIL model could simulate the “hot” spot in red and near-infrared bands, as well as the “bowl” shape in the near-infrared band. The relationship between the uniform index and BRDF is negatively exponential. Finally, the look-up table was calculated using the MGeoSAIL model, and leaf area index (LAI) was inversed from compact high-resolution imaging spectrometry data. The results compared well with the measured LAI in Changbai Mountain area, China. Numéro de notice : A2013-603 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2012.2234466 En ligne : https://doi.org/10.1109/TGRS.2012.2234466 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32739
in IEEE Transactions on geoscience and remote sensing > vol 51 n° 10 (October 2013) . - pp 5047 - 5059[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-2013101 RAB Revue Centre de documentation En réserve L003 Disponible Monitoring precipitable water vapor in real-time using global navigation satellite systems / Seung-Woo Lee in Journal of geodesy, vol 87 n° 10-12 (October - December 2013)PermalinkNarrow-band interference suppresion for SAR based on independent component analysis / Feng Zhou in IEEE Transactions on geoscience and remote sensing, vol 51 n° 10 (October 2013)PermalinkA reference station-based GNSS computing mode to support unified precise point positioning and real-time kinematic services / Yanming Feng in Journal of geodesy, vol 87 n° 10-12 (October - December 2013)PermalinkTroposphere delays from space geodetic techniques, water vapor radiometers, and numerical weather models over a series of continuous VLBI campaigns / Kamil Teke in Journal of geodesy, vol 87 n° 10-12 (October - December 2013)PermalinkAssessing the relationship between ground measurements and object-based image analysis of land cover classes in Pinyon and Juniper Woodlands / April Hulet in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 9 (September 2013)PermalinkGeneralized composite kernel framework for hyperspectral image classification / J. Li in IEEE Transactions on geoscience and remote sensing, vol 51 n° 9 (September 2013)PermalinkImprovement of GPS/acoustic seafloor positioning precision through controlling the ship’s track line / M. Sato in Journal of geodesy, vol 87 n° 9 (September 2013)Permalinkvol 27 n° 9-10 - september - october 2013 - Land change modelling: moving beyond projections (Bulletin de International journal of geographical information science IJGIS) / Martin PaegelowPermalinkMapping social activities and concepts with social media (Twitter) and web search engines (Yahoo and Bing): a case study in 2012 US Presidential Election / Ming-Hsiang Tsou in Cartography and Geographic Information Science, vol 40 n° 4 (September 2013)PermalinkModélisation de l'accessibilité territoriale pour l'aide à la gestion de crise tsunami (Mayotte, France) / Frédéric Leone in Annales de géographie, n° 693 (septembre - octobre 2013)Permalink