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Four years of oceans colour remote sensing with MOS-IRS / M. Hetscher in International Journal of Remote Sensing IJRS, vol 25 n° 7 (April 2004)
[article]
Titre : Four years of oceans colour remote sensing with MOS-IRS Type de document : Article/Communication Auteurs : M. Hetscher, Auteur ; H. Krawczyk, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 1415 - 1421 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] capteur multibande
[Termes IGN] composition colorée
[Termes IGN] couleur de l'océan
[Termes IGN] eaux côtières
[Termes IGN] image IRS
[Termes IGN] image MOS
[Termes IGN] océanographie spatiale
[Termes IGN] radiance
[Termes IGN] rayonnement proche infrarouge
[Termes IGN] sédiment
[Termes IGN] spectromètre imageur
[Termes IGN] traitement d'imageRésumé : (Auteur) The imaging spectrometer MOS IRS-P3 was launched in March 1996 as the first example of a new generation of ocean colour sensors. It consists of three different spectrometers in the visible/near-infrared spectral region with 18 channels. The IRS-P3 mission is focused on the remote sensing of case 2 water, particularly the derivation of different water constituents in coastal waters. Due to the more complex spectral behaviour of case 2 water, a new methodological approach was developed which works directly with satellite measured top-of-atmosphere radiance and accounts for the correlation of the different water constituents as well as for the spectral shape. This paper gives an overview of the mission, the scientific goals and the development and improvement of the retrieval algorithms. The potential of the algorithm is demonstrated and examples of selected European coasts are shown. Derived maps of water constituents are presented. Numéro de notice : A2004-094 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160310001592382 En ligne : https://doi.org/10.1080/01431160310001592382 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26621
in International Journal of Remote Sensing IJRS > vol 25 n° 7 (April 2004) . - pp 1415 - 1421[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 080-04071 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Automated subpixel photobathymetry and water quality mapping / R.L. Huguenin in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 1 (January 2004)
[article]
Titre : Automated subpixel photobathymetry and water quality mapping Type de document : Article/Communication Auteurs : R.L. Huguenin, Auteur ; M.H. Wang, Auteur ; R. Biehl, Auteur ; S. Stoodley, Auteur ; J.N. Rogers, Auteur Année de publication : 2004 Article en page(s) : pp 111 - 123 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] bathymétrie
[Termes IGN] carbone
[Termes IGN] carte thématique
[Termes IGN] chlorophylle
[Termes IGN] classification
[Termes IGN] image Ikonos
[Termes IGN] image multibande
[Termes IGN] lac
[Termes IGN] Massachusetts (Etats-Unis)
[Termes IGN] pollution des eaux
[Termes IGN] précision infrapixellaire
[Termes IGN] profondeur
[Termes IGN] qualité des eaux
[Termes IGN] sédiment
[Termes IGN] turbidité océaniqueRésumé : (Auteur) New photobathymetry and water quality software is described here that utilizes subpixel analysis software (Subpixel Classifier) with an autonomous image calibration procedure and analytic retrieval algorithm to simultaneously retrieve and report bottom depth and the concentrations of suspended chlorophyll, suspended sediments, and colored dissolved organic carbon on a perpixel basis from four-band multispectral image data. From the derived composition, the QSC2 (Quantitative Shoreline Characterization, Version 2.0) software also computes and reports water column visibility parameters (vertical and horizontal subsurface sighting ranges and turbidity, each at four wavelength band passes, plus Secchi depth as a scalar) as well as depth and turbidity confidence. Qsc2 compensates for the effects of the atmosphere, sun and sky reflections from the water surface, subpixel contributions from exposed land, and variations in the bottom material properties. All information is derived automatically from the pixel data alone. The performance of the Qsc2 software was demonstrated using a four-band Ikonos image of Plymouth, Massachusetts. Accuracies of the image-derived compositions, water clarity, and depths were assessed using field and laboratory measurements for eight representative lakes in the scene. The means of the differences of the field-measured and image-derived suspended chlorophyll and colored dissolved organic carbon concentrations for the eight lakes were 1.82 ug/l and 4.34 mgC/1, respectively. The image-derived concentrations of suspended sediments were all below the threshold of detection for the field samples (5 mg/1), in agreement with the field data. The mean of the differences between field-measured and image-derived Secchi depths was 0.76 m. The mean depth difference was 0.57 m. Numéro de notice : A2004-005 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.1.111 En ligne : https://doi.org/10.14358/PERS.70.1.111 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26533
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 1 (January 2004) . - pp 111 - 123[article]Water quality retrievals from combined Landsat TM data and ERS-2 SAR data in the Gulf of Finland / Y. Zhang in IEEE Transactions on geoscience and remote sensing, vol 41 n° 3 (March 2003)
[article]
Titre : Water quality retrievals from combined Landsat TM data and ERS-2 SAR data in the Gulf of Finland Type de document : Article/Communication Auteurs : Y. Zhang, Auteur ; J.T. Pulliainen, Auteur ; S.S. Koponen, Auteur ; M.T. Hallikainen, Auteur Année de publication : 2003 Article en page(s) : pp 622 - 629 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Baltique, mer
[Termes IGN] image ERS-SAR
[Termes IGN] image Landsat-TM
[Termes IGN] qualité des eaux
[Termes IGN] réseau neuronal artificiel
[Termes IGN] turbidité océaniqueRésumé : (Auteur) This paper presents the applicability of combined Landsat Thematic Mapper and European Remote Sensing 2 synthetic aperture radar (SAR) data to turbidity, Secchi disk depth, and suspended sediment concentration retrievals in the Gulf of Finland. The results show that the estimated accuracy of these water quality variables using a neural network is much higher than the accuracy using simple and multivariate regression approaches. The results also demonstrate that SAR is only a marginally helpful to improve the estimation of these three variables for the practical use in the study area. However, the method still needs to be refined in the area under study. Numéro de notice : A2003-117 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2003.808906 En ligne : https://doi.org/10.1109/TGRS.2003.808906 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22413
in IEEE Transactions on geoscience and remote sensing > vol 41 n° 3 (March 2003) . - pp 622 - 629[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-03031 RAB Revue Centre de documentation En réserve L003 Disponible Hyperspectral edge filtering for measuring homogeneity of surface cover types / Wim H. Bakker in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 4 (July - August 2002)
[article]
Titre : Hyperspectral edge filtering for measuring homogeneity of surface cover types Type de document : Article/Communication Auteurs : Wim H. Bakker, Auteur ; K.S. Schmidt, Auteur Année de publication : 2002 Article en page(s) : pp 246 - 256 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] distance euclidienne
[Termes IGN] eau de mer
[Termes IGN] filtrage numérique d'image
[Termes IGN] image HYMAP
[Termes IGN] image hyperspectrale
[Termes IGN] maraisRésumé : (Auteur) Edge operators are widely used on grey-level images as a first step in image segmentation or image interpretation. Methods that are currently used for edge filtering are complex and only valid under certain conditions, or useful for threeband colour images only. The problem remains on how to apply edge filtering on multispectral or even hyperspectral images. This paper presents a method that can be used for multispectral and hyperspectral edge filtering. The method uses filtering techniques in combination with three distance measures, namely the Euclidean distance, the spectrum intensity difference, or the spectral angle. The same hyperspectral edge filters serve as homogeneity measures. By simply 'plugging in' another distance measure in the same filter, a separation between intensity and spectral content is achieved, which makes the hyperspectral edge filters the natural extension of colour edge filters. The hyperspectral edge filters use information from all spectral bands to arrive at a (dis)similarity map in one step. The edge filters were tested on HyMap hyperspectral imagery of the island of Schiermormikoog. The test area includes agriculture and a saltmarsh. Experimental results are presented. The spectral angle (dis)similarity of neighbouring pixels can be directly compared with spectral angles already obtained by using the Spectral Angle Mapper for classification. We show that these hyperspectral edge filters assist image interpretation, even in heterogeneous ecosystems such as saltmarshes. Copyright ISPRS Numéro de notice : A2002-167 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/S0924-2716(02)00060-6 En ligne : https://doi.org/10.1016/S0924-2716(02)00060-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22082
in ISPRS Journal of photogrammetry and remote sensing > vol 56 n° 4 (July - August 2002) . - pp 246 - 256[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-02021 SL Revue Centre de documentation Revues en salle Disponible Monitoring and water pollution modelling of the Bosphorus by regression analysis using multitemporal Landsat-TM data / H. Gonca Coskun (2001)
Titre : Monitoring and water pollution modelling of the Bosphorus by regression analysis using multitemporal Landsat-TM data Type de document : Article/Communication Auteurs : H. Gonca Coskun, Auteur ; S. Ekercin, Auteur ; A. Oztopal, Auteur Editeur : Lisse et Amsterdam : Balkema (August Aimé) Année de publication : 2001 Conférence : EARSeL 2001, 21st international symposium, Observing our environment from space : news solutions for a new millennium 14/05/2001 16/05/2001 Paris France Importance : pp 275 - 279 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Bosphore, détroit du
[Termes IGN] image Landsat
[Termes IGN] image multibande
[Termes IGN] polluant
[Termes IGN] pollution des mers
[Termes IGN] réflectance
[Termes IGN] surveillance écologique
[Termes IGN] turbidité océaniqueRésumé : (Auteur) Environmental pollution is among the most common problems of different nations as a global problem. Especially, water pollution is a continuous threat to surface water resources and transportation routes in the world. Istanbul Straight (Bosphorus) is a model for such a situation due to water passage from the Black Sea to the Mediterranean Sea. In fact, pollution sources of the Bosphorus originate from the wastage of many nations that have costal areas along the Black Sea and Danube River in addition to the population as well as industrial pollutants from the city itself. Pollution surface measurements are carried out concerning total suspended solids JSS), humic materials (HM), chemical oxygen demand (COD), poliaromatik hydrocarbons (PAH) and hydrodynamic conditions of water. On the other hand, digital multispectral Landsat-5 satellite data were recorded and co-registered for a portion of the Bosphorus. Relationships are sought between the water quality parameters and the reflectance values by the use of regression analysis. Although such an analysis has been carried out in the past during 1986 since then there are signs of significant water pollution increment in the Bosphorus. Therefore, this paper aims at the deduction of the most recent data analysis from 1997 in comparisons with earlier studies so as to make temporal decisions in addition to the spatial features. Adaptive parameter estimation in the regression analyses provides efficient computation in an economic manner. These observed reflectance values show a strong relationship with the water quality observation. The necessary values are provided in single pixel values for each band at the station point in the Bosphorus. Satellite data provide a useful index of TSS, HM and PAH. As the reflectance (in the turbidity area) in the longer red and near IR increases faster than the reflectance in shorter blue and green wavelengths, it can be seen that turbidity levels are positively related to reflectance. Numéro de notice : C2001-034 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64942 Remote sensing for marine and coastal environments: Proceedings of the Fifth International Conference, 1. Volume 1 / Environmental research institute of Michigan (1998)PermalinkRemote sensing for marine and coastal environments: Proceedings of the Fifth International Conference, 2. Volume 2 / Environmental research institute of Michigan (1998)PermalinkOcean colour analysis in coastal waters by airborne sensors / G. Zibordi in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)PermalinkCoastal geomorphology of Mahe island, Seychelles / B.G. Wagle in International Journal of Remote Sensing IJRS, vol 11 n° 2 (February 1990)PermalinkUse of microwave remote sensing in salinity estimation / R.P. Singh in International Journal of Remote Sensing IJRS, vol 11 n° 2 (February 1990)PermalinkAirborne discrimination between ice and water : application to the laser measurement of chlorophyll-in-water in a marginal ice zone / F.E. Hoge in Remote sensing of environment, vol 30 n° 1 (01/10/1989)PermalinkA three-component model of ocean colour and its application to remote sensing of phytoplankton pigments in coastal waters / S. Sathyendranath in International Journal of Remote Sensing IJRS, vol 10 n° 8 (August 1989)PermalinkRemote sensing of aerosols over the oceans using AVHRR data : theory, practice and applications / C.R.N. Rao in International Journal of Remote Sensing IJRS, vol 10 n°4-5 (May 1989)PermalinkAnalysis of Thematic Mapper data for studying the suspended matter distribution in the coastal area of the German bight (North sea) / R. Doerffer in Remote sensing of environment, vol 28 n° 1 (April - June 1989)PermalinkApplication of satellite visible band data to high latitude oceans / K. Ahlnas in Remote sensing of environment, vol 28 n° 1 (April - June 1989)Permalink