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Unsupervised target detection in hyperspectral images using projection pursuit / S.S. Chiang in IEEE Transactions on geoscience and remote sensing, vol 39 n° 7 (July 2001)
[article]
Titre : Unsupervised target detection in hyperspectral images using projection pursuit Type de document : Article/Communication Auteurs : S.S. Chiang, Auteur ; C.I. Chang, Auteur ; I.W. Ginsberg, Auteur Année de publication : 2001 Article en page(s) : pp 1380 - 1391 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] détail topographique artificiel
[Termes IGN] détection de cible
[Termes IGN] image hyperspectraleRésumé : (Auteur) The authors present a projection pursuit (PP) approach to target detection. Unlike most of developed target detection algorithms that require statistical models such as linear mixture, the proposed PP is to project a high dimensional data set into a low dimensional data space while retaining desired information of interest. It utilizes a projection index to explore projections of interestingness. For target detection applications in hyperspectral imagery, an interesting structure of an image scene is the one caused by man-made targets in a large unknown background. Such targets can be viewed as anomalies in an image scene due to the fact that their size is relatively small compared to their background surroundings. As a result, detecting small targets in an unknown image scene is reduced to finding the outliers of background distributions. It is known that “skewness,” is defined by normalized third moment of the sample distribution, measures the asymmetry of the distribution and “kurtosis” is defined by normalized fourth moment of the sample distribution measures the flatness of the distribution. They both are susceptible to outliers. So, using skewness and kurtosis as a base to design a projection index may be effective for target detection. In order to find an optimal projection index, an evolutionary algorithm is also developed to avoid trapping local optima. The hyperspectral image experiments show that the proposed PP method provides an effective means for target detection. Numéro de notice : A2001-198 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/36.934071 En ligne : https://doi.org/10.1109/36.934071 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21892
in IEEE Transactions on geoscience and remote sensing > vol 39 n° 7 (July 2001) . - pp 1380 - 1391[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-01071 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Visual Information Processing 8 Type de document : Actes de congrès Auteurs : Stephen K. Park, Éditeur scientifique ; Richard D. Juday, Éditeur scientifique Editeur : Washington : Society of Photo-Optical Instrumentation Engineers SPIE Année de publication : 1999 Collection : SPIE Proceedings num. 3716 Conférence : SPIE 1999, Visual Information Processing 8 06/04/1999 Orlando Floride - Etats-Unis Proceedings SPIE Importance : 264 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-0-8194-3190-5 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] détection de cible
[Termes IGN] ondelette
[Termes IGN] restauration d'image
[Termes IGN] séquence d'imagesNote de contenu : Self-affine scaling analysis of coating structure / Mark A. Johnson; Paul J. Cote
- Image segmentation using trainable fuzzy set classifiers / Robert J. Schalkoff; Albrecht E. Carver; Sabri Gurbuz
- Wavelet-based restoration with tunable parameter / Viviana Sandor; Stephen K. Park
- Retinex preprocessing for improved multispectral image classification / Beverly J. Thompson; Zia-ur Rahman; Stephen K. Park
- Video data compression using MPEG-2 and frame decimation / Jon C. Leachtenauer; Mark Richardson; Paul Garvin
- Compressed-domain spatio-temporal metric for change detection in image sequences / Farid Ahmed; Gregory J. Power
- Image processing meta-algorithm development via genetic manipulation of existing algorithm graphs / Robert J. Schalkoff; Khaled M. Shaaban
- Restoration of digital images with known space-variant blurs from conventional optical systems / Thomas P. Costello; Wasfy B. Mikhael
- Channel-optimized transform coding of imagery / Glen P. Abousleman; Tuyet-Trang Lam; Lina J. Karam
- Efficient multimedia image retrieval system / Mehmet Celenk
- Information theoretic assessment and design of hyperspectral imaging systems / Stephen E. Reichenbach; Yan Xiong; Ram Mohan Narayanan; Luyin Cao
- Coloring 3D symmetry set: perceptual meaning and significance in 3D / Sibel Z. Tari
- Real-time image processing system design for multi-processor architectures / Holger Lange
- Robust toolbox for texture classification and segmentation / Vidya B. Manian; Myra Ruiz; Ramon E. Vasquez
- Visualization of deep convective image sequences / John S. DaPonte; Jo Ann Parikh
- Efficient codebook search for vector quantization: exploiting inherent codebook structure / Mohamed Qasem; Xun Du; Stanley C. Ahalt
- Dynamic scale-space paradigms versus mathematical morphology? / Alfons H. Salden
- Detecting planar patches in urban scenes / Frank Fuchs; Herve Le Men
- Probabilistic model based on separating bipoints to segment multithresholdable images / Aline Deruyver; Yann Hode
- Improved wavelet-based multiresolution edge detection in noisy images / Yunwoo Lee; Samuel Peter Kozaitis
- Model for estimating target detection ranges in the visible spectrum / Zeev Zalevsky; Steven Lashansky; Arnon Goldman; Tamar Fridlander
- Robust rank detail-preserving filters with noise suppression in image processing applications / Volodymyr I. Ponomaryov; Oleksiy B. Pogrebnyak; Felipe Gonsalez Leon
- Multispectral multisensor image fusion using wavelet transforms / George P. Lemeshewsky
- Visual navigation system for autonomous indoor blimps / Mario F.M. Campos; Lucio de Souza Coelho
- Video coding using Karhunen-Loeve transform and motion compensation / Yurij S. Musatenko; Olexandr M. Soloveyko; Vitalij N. Kurashov; Vladislav A. Dubikovskiy
- Visual measurement estimation for autonomous vehicle navigation / Mario F.M. Campos; Luiz Chaimowicz
- Metropolis Monte Carlo deconvolution / Abolfazl M. AminiNuméro de notice : 19856 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Actes DOI : sans En ligne : http://spie.org/Publications/Proceedings/Volume/3716 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86021 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19856-01 CG.99 Livre Centre de documentation Congrès Disponible Ortung von eindeutig identifizierbaren Zielen und kodierten Transpondern / D. Hounam (1998)
Titre : Ortung von eindeutig identifizierbaren Zielen und kodierten Transpondern Titre original : [Localisation and identification of targets in SAR images using coded transponders] Type de document : Thèse/HDR Auteurs : D. Hounam, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 1998 Collection : DGK - C Sous-collection : Dissertationen num. 482 Importance : 87 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-9522-9 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] détection de cible
[Termes IGN] écho radar
[Termes IGN] étalonnage radiométrique
[Termes IGN] image ERS-SAR
[Termes IGN] image radar
[Termes IGN] impulsion
[Termes IGN] radargrammétrie
[Termes IGN] transpondeurIndex. décimale : 35.22 Télédétection en hyperfréquence - Traitement d'image radar Résumé : (Auteur) The resolution of microwave imaging systems operating on the SAR principle is insufficient to be able to positively identify and locate objects in SAR images. This restricts the range of applications particularly of remote sensing satellites like ERS-1, which are intended for the global monitoring of the earth's surface. The report describes a new technique using coded transponders, whereby objects can be labelled and, hence, unambiguously identified and located in a SAR image. The structure of the transponder signal is changed so that it can be unambiguously identified and located in the SAR data after appropriate processing. At the same time, the transponder is suppressed in the conventionally processed SAR image. With one technique for changing the structure, the SAR signal received by the transponder is modulated with a code from pulse to pulse. With the second technique, which renders the transponder completely invisible in the conventionally processed SAR image, the chirp modulation applied for the purpose of pulse compression is reversed. The techniques are analysed and measurements performed with an experimental transponder and the SAR of the ERS-1 satellite, demonstrating the validity of the technique, are described. Numéro de notice : 67053 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=61695 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 67053-01 35.22 Livre Centre de documentation Télédétection Disponible 67053-02 35.22 Livre Centre de documentation Télédétection Disponible The relative importance of contrast and motion in visual detection / Harold E. Peterson in Human Factors: The Journal of the Human Factors and Ergonomics Society, vol 14 n° 3 (June 1972)
[article]
Titre : The relative importance of contrast and motion in visual detection Type de document : Article/Communication Auteurs : Harold E. Peterson, Auteur ; Doris J. Dugas, Auteur Année de publication : 1972 Article en page(s) : pp 207 - 216 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Optique physiologique
[Termes IGN] contraste de couleurs
[Termes IGN] détection de cible
[Termes IGN] visionRésumé : (auteur) The relative roles of contrast and motion in the detection of targets were investigated using a television display of an artificial target inserted in several different backgrounds of varying complexity. Independent effects of both contrast and motion on the detectability of targets were found. The magnitude of these effects can be accounted for in the detection probability function by modifying the exponent with a linear contrast term and a second-power velocity term. At target speeds greater than about 5 deg/sec, the detection probability began to level off, probably due to interference of the boundaries of the display. Single-fixation experiments confirmed a larger detection field for moving targets than for static, but also demonstrated a gradual increase in the fixation time required to detect a target as a function of its distance from the fixation point. Numéro de notice : A1972-075 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84305
in Human Factors: The Journal of the Human Factors and Ergonomics Society > vol 14 n° 3 (June 1972) . - pp 207 - 216[article]