{"title":"Classification of hyperspectral images using automatic marker selection and Minimum Spanning Forest","authors":"Y. Tarabalka, J. Chanussot, J. Benediktsson","doi":"10.1109/WHISPERS.2009.5289054","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289054","url":null,"abstract":"A new method for segmentation and classification of hyperspectral images is proposed. The method is based on the construction of a Minimum Spanning Forest (MSF) from region markers. Markers are defined automatically from classification results. For this purpose, pixel-wise classification is performed and the most reliable classified pixels are chosen as markers. Furthermore, each marker defined from classification results is associated with a class label. Each tree in the MSF grown from a marker forms a region in the segmentation map. By assigning a class of each marker to all the pixels within the region grown from this marker, classification map is obtained. Furthermore, the classification map is refined, using results of a pixel-wise classification and a majority voting within the spatially connected regions. Experimental results are presented on a 200-band AVIRIS image of the Northwestern Indiana's Indian Pine site. The use of different dissimilarity measures for construction of the MSF is investigated. The proposed scheme improves classification accuracies, when compared to previously proposed classification techniques, and provides accurate segmentation and classification maps.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116986871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the modeling and processing of polarization in Raman spectroscopy","authors":"S. Miron, D. Brie, M. Dossot, B. Humbert","doi":"10.1109/WHISPERS.2009.5289083","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289083","url":null,"abstract":"The use of polarized lasers for Raman spectroscopy provides a powerful tool in chemical physics as it allows a precise differentiation of the vibration modes of the crystals according to their crystallographic symmetry and local spatial orientation. In this paper we analyze the possibility of efficiently using the polarization information in Raman spectroscopy by taking into account the relationships between the two polarized spectra (parallel and orthogonal). New signal processing models for the polarized Raman spectroscopy data are introduced and algorithmic solutions are proposed.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123419155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abel S. Nunez, M. Mendenhall, Heidi C. Bertram, A. Brooks
{"title":"Building an integumentary system hyperspectral model for avatars","authors":"Abel S. Nunez, M. Mendenhall, Heidi C. Bertram, A. Brooks","doi":"10.1109/WHISPERS.2009.5289038","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289038","url":null,"abstract":"In this paper we transform the results of a hyperspectral skin reflectance model into RGB values to simulate the color of skin under various biological circumstances. The amount of different chromophores in the skin can be adjusted within the model to simulate circumstances such as elevated blood levels in the cheeks caused by blushing, the draining of blood from the face caused by fear, or the bluish tint of the skin caused by a lack of oxygen. The melanosome level in the epidermis can also be adjusted to simulate different levels of skin darkness and show how increased levels of melanosomes reduce the influence of other chromophores in skin.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"128 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124242133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Local-global background modeling for anomaly detection in hyperspectral images","authors":"E. Madar, O. Kuybeda, D. Malah, M. Barzohar","doi":"10.1109/WHISPERS.2009.5289036","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289036","url":null,"abstract":"In this paper, we address the problem of unsupervised detection of anomalies in hyperspectral images. Our proposed method is based on a novel statistical background modeling approach that combines local and global approaches. The local-global background model has the ability to adapt to all nuances of the background process like local approaches but avoids over-fitting due to a too high number of degrees of freedom, which produces a high false alarm rate. This is done by constraining the local background models to be interrelated. The results strongly prove the effectiveness of the proposed algorithm. We experimentally show that our localglobal algorithm performs better than several other global or local anomaly detection techniques, such as the well known RX or its Gaussian Mixture version (GMRX).","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131993760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. D. D. Wit, S. Moussaoui, P. Amblard, J. Aboudarham, F. Auchère, M. Kretzschmar, J. Lilensten
{"title":"Multispectral imaging the sun in the ultraviolet","authors":"T. D. D. Wit, S. Moussaoui, P. Amblard, J. Aboudarham, F. Auchère, M. Kretzschmar, J. Lilensten","doi":"10.1109/WHISPERS.2009.5288994","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5288994","url":null,"abstract":"Solar images in the ultraviolet (UV) are the key to the understanding of the highly dynamic and energetic solar atmosphere. Nowadays, several missions provide simultaneous observations in multiple wavelengths. Such multispectral images have traditionally been used as inputs to physical models. However, as the number of wavelengths steadily increases, empirical approaches such as hyperspectral analysis and blind source separation, become of interest. Two examples are presented, based respectively on spatial and on spectral mixtures of UV data.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131053187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. S. Karoui, Y. Deville, S. Hosseini, A. Ouamri, D. Ducrot
{"title":"Improvement of remote sensing multispectral image classification by using Independent Component Analysis","authors":"M. S. Karoui, Y. Deville, S. Hosseini, A. Ouamri, D. Ducrot","doi":"10.1109/WHISPERS.2009.5289033","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289033","url":null,"abstract":"This paper deals with the application of Independent Component Analysis (ICA) as a solution to Blind Source Separation (BSS), in order to pre-process remote sensing multispectral images before we classify them. We analyze the structure of the considered data, and especially show that each recorded image corresponding to a spectral band may be seen as an observation consisting of a mixture (linear combination) of source images. The latter images correspond to the abundances of the pure elements (endmembers) in the pixels. Using BSS methods, one can hope to reduce the mixing effect in these observations, which then allows better recognition of the classes constituting the observed scene. Based on this approach, we create new images (i.e. at least partly separated images) by using ICA, starting from HRV SPOT images. These images are then used as inputs of a supervised classifier integrating textural information. The separated image classification results show a clear improvement compared to classification of initial images. This show the contribution of ICA as an attractive pre-processing for classification of multispectral remote sensing imagery.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126942383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Estimating foliar biochemistry from reflectance and the detection of phellinus sulphurascens induced stress","authors":"G. Quinn, K. Niemann, D. Goodenough","doi":"10.1109/WHISPERS.2009.5288991","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5288991","url":null,"abstract":"Photosynthetic pigments are frequently cited as one of the most responsive indicators of vegetation stress. This study estimated pigment content from needle reflectance and characterized the sensitivity of these pigments to a fungal-mediated stress.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123881626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Kernel subspace-based anomaly detection for hyperspectral imagery","authors":"N. Nasrabadi","doi":"10.1109/WHISPERS.2009.5289028","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289028","url":null,"abstract":"This paper provides a performance comparison of various linear and nonlinear subspace-based anomaly detectors. Three different techniques, Principal Component Analysis (PCA), Fisher Linear Discriminant (FLD) Analysis, and the Eigenspace Separation Transform (EST), are used to generate the linear projection subspaces. Each of these three linear methods is then extended to its corresponding nonlinear kernel version. The well-known Reed-Xiaoli (RX) anomaly detector and its kernel version (kernel RX) are also implemented. Comparisons between all linear and non-linear anomaly detectors are made using receiver operating characteristics (ROC) curves for several hyperspectral imagery.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121731258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"LiDAR-guided analysis of airborne hyperspectral data","authors":"K. Niemann, G. Frazer, R. Loos, F. Visintini","doi":"10.1109/WHISPERS.2009.5289029","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289029","url":null,"abstract":"This paper describes a new framework to the collection and fusion of multisensor airborne LiDAR and hyperspectral data. We describe a data fusion philosophy that provides a spatially precise positioning of hyperspectral data based on discrete first and last return LiDAR data. Three dimensional objects defined by the LiDAR data are then used to sample optimal spectra for subsequent analysis. The sampled spectra retain their positioning metadata and so can be mapped back into geographic space for further analysis. While the paper presents this philosophy within the context of a species classification, other analytical analysis can be performed.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116584959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preliminary hyperspectral band selection for difficult object detection","authors":"Lukasz Paluchowski, P. Walczykowski","doi":"10.1109/WHISPERS.2009.5289055","DOIUrl":"https://doi.org/10.1109/WHISPERS.2009.5289055","url":null,"abstract":"Automatic target detection has been a well-known topic since the early 1990's. With the development of digital photographic techniques it has became even more popular. So far, a lot of algorithms for artificial objects detection from natural backgrounds have been elaborated and developed. Unfortunately detecting difficult objects like military, camouflaged targets is still a hard task and it leads in many times to a big number of false alarms. The objective of this paper is to provide a comparative analysis of methods for object detection based on single hyperspectral band, two-band and multiple band. In this studies, to check the spectral contrast between objects and background, the algorithm based on mahalanobis distance has been used. All possible two-band and three band combinations have been checked and compared with single band. We analyzed data coming from hyperspectral ground based system consists of digital video camera and optoelectronic tuneable filter. Data was collected mostly in near infrared range with 10nm spectral resolution. Additional we took a challenge to classify the methods taking into account possibility of unknown object detection and detecting object with known spectral characteristic. Results obtained are interesting. They point to a need of proper band selection for difficult object detection and form the basis for the expansion of research.","PeriodicalId":242447,"journal":{"name":"2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123349663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}