{"title":"Target discrimination via optimal wavelength band selection with synthetic hyperspectral imagery","authors":"Zhong Lu, Andrew Rice, J. Vasquez, J. Kerekes","doi":"10.1109/WHISPERS.2010.5594873","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594873","url":null,"abstract":"Hyperspectral imaging (HSI) tracking is an emerging area of research, employing HSI instruments and exploitation techniques with the goal to track moving objects within challenging environments and across frequent ambiguities. Dimensionality reduction through wavelength band selection can help resolve such ambiguities quickly and thereby improving the feature-aided tracking performance in realtime platforms. A novel band selection algorithm is proposed to determine the optimal subset of bands that contain important information for classification. A series of studies have been conducted to evaluate the band selection algorithm and to demonstrate the benefits of optimal wavelength band selection. Synthetic HSI data using the image simulation code DIRSIG has been a key enabler to this effort. A suite of end-to-end synthetic experiments have been conducted, which include high-fidelity moving-target urban vignettes, synthetic hyperspectral rendering, and full image-chain treatment of the various sensor models.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134298988","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":"Statistical analysis of growth levels of rice paddy based on hyperspectral imagery with high spatial resolution","authors":"K. Uto, Y. Kosugi, Jiro Sasaki","doi":"10.1109/WHISPERS.2010.5594954","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594954","url":null,"abstract":"Hyperspectral image data with sub-centimeter spatial resolution acquired by a low-altitude imaging system provided us valuable insight for the biochemistry. However, it is rather difficult to utilize the spatially detailed information because of the spectral fluctuation caused by the structural factor, e.g. BRDF, specular components, shading. This paper provides a statistical method for the estimation of growth levels in rice paddy based on hyperspectral image data with spatially high resolution. The extraction of vegetation regions under direct sun is followed by gaussian mixture modeling to separate different parts in the vegetation regions, e.g. leaves and ears in rice paddy. BRDF characteristics of specular components are utilized for simple specular component removal from the vegetation regions. The extracted spectral data are mapped to a feature space spanned by scaling factor-tolerant vegetation indices. Principal component analysis (PCA) with order constraint is used to generate indices which quantify growth levels of 5 paddy fields with different planting dates.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133478953","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}
I. Danilina, A. Gillespie, Matthew Smith, L. Balick, E. Abbott
{"title":"Thermal infrared radiosity and heat diffusion model verification and validation","authors":"I. Danilina, A. Gillespie, Matthew Smith, L. Balick, E. Abbott","doi":"10.1109/WHISPERS.2010.5594932","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594932","url":null,"abstract":"A radiosity model used for predicting effective hyperspectral emissivity spectra and radiant temperatures for rough surfaces has been developed. Here we compare the computer model results to analytic model results in order to verify that the computer model is working properly, and validate the model results by comparison to spectra measured in the field by an hyperspectral imaging spectrometer. We measured a cm-scale DEM of the test scene using a tripod-based LiDAR. The discrepancies between analytical and modeled values are less than 0.01%. Modeled emissivity spectra deviate from the measured by no more than 0.015 emissivity units.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132853050","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}
L. Mandrake, D. Thompson, M. Gilmore, R. Castaño, E. Dobrea
{"title":"Automated Neutral Region selection using superpixels","authors":"L. Mandrake, D. Thompson, M. Gilmore, R. Castaño, E. Dobrea","doi":"10.1109/WHISPERS.2010.5594856","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594856","url":null,"abstract":"This work presents an automated approach utilizing superpixel segmentation for detecting spectrally Neutral Regions (NR) in hyperspectral images. NRs are often used in planetary geology as spectral divisors to Regions of Interest (ROI), both to enhance key mineralogical signatures and correct for systematic errors such as residual atmospheric distortion. We compare automated NR selections to handpicked examples with mineralogical summary products used in analysis of data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM). We also present a new summary product to quantify the level of atmospheric distortion in a CRISM spectrum. We find that the automated algorithm matches manual NR detection with regards to mineral spectral contrast and outperforms manual selection for reducing atmospheric distortion.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115413736","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}
S. Ganguly, R. Nemani, Y. Knyazikhin, Weile Wang, H. Hashimoto, P. Votava, A. Michaelis, C. Milesi, J. Dungan, F. Melton, R. Myneni
{"title":"A physically based approach in retrieving vegetation Leaf Area Index from Landsat surface reflectance data","authors":"S. Ganguly, R. Nemani, Y. Knyazikhin, Weile Wang, H. Hashimoto, P. Votava, A. Michaelis, C. Milesi, J. Dungan, F. Melton, R. Myneni","doi":"10.1109/WHISPERS.2010.5594875","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594875","url":null,"abstract":"In this study, we aim to generate global 30-m Leaf Area Index (LAI) from Landsat surface reflectance data using the radiative transfer theory of canopy spectral invariants which facilitates parameterization of the canopy spectral bidirectional reflectance factor (BRF). Furthermore, canopy spectral invariants introduce an efficient way for incorporating multiple bands for retrieving LAI. We incorporate a 3-band retrieval scheme including the Red, NIR and SWIR bands, the SWIR band being specifically useful in low LAI regions and thus compensating for background effects. The initial results have satisfactory agreement with MODIS LAI, although with spatially more detailed structure and variability. A future exercise will be to introduce field measured LAI estimates to minimize the differences between model-simulated LAI's and in-situ observations.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116019073","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}
H. Yao, Zuzana Hruska, R. Kincaid, Ambrose E. Ononye, Robert L. Brown, T. Cleveland
{"title":"Spectral Angle Mapper classification of fluorescence hyperspectral image for aflatoxin contaminated corn","authors":"H. Yao, Zuzana Hruska, R. Kincaid, Ambrose E. Ononye, Robert L. Brown, T. Cleveland","doi":"10.1109/WHISPERS.2010.5594920","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594920","url":null,"abstract":"Aflatoxin contamination in corn is a serious problem for both producers and consumers. The present study applied the Spectral Angle Mapper classification technique to classify single corn kernels into contaminated and healthy groups. Fluorescence hyperspectral images were used in the classification. Actual corn aflatoxin concentration was chemically determined using the VICAM analytical method for quantification purpose. An obvious fluorescence peak shift was observed to be associated with the aflatoxin contaminated corn. Aflatoxin classification levels were based on Food and Drug Administration's regulation, including 20 ppb (parts per billion) for human consumption and 100 ppb for feed. Classification accuracy for the 20 ppb level is 86% with a false positive rate of 15%. For the 100 ppb level, the accuracy is 88% with a false positive rate of 16%. The results indicate that the Spectral Angle Mapper method and fluorescence hyperspectral imagery have the potential to classify aflatoxin contaminated corn kernels.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116341144","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":"Iterative spatial filtering for reducing intra-class spectral variability and noise","authors":"Derek M. Rogge, B. Rivard","doi":"10.1109/WHISPERS.2010.5594871","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594871","url":null,"abstract":"Intra-class variability and noise are obstacles that obscure subtle differences between spectral classes in hyperspectral imagery. This paper presents an iterative adaptive smoothing filter (IAS), which considers inherent spatial characteristics of image classes and the assumed random nature of pixel to pixel noise to minimize intra-class variability and noise. IAS makes use of standard hyperspectral spectral similarity measures, spectral angle and root-mean-squared error, to calculate and apply weighting functions to filter image pixels. Using a small window assures that spatially independent classes with subtle spectral differences can still be distinguished. The result is a change in the internal density distribution of the data volume (intra-class variability and noise), but the overall volume undergoes little change (inter-class variability). The usefulness of the filter is illustrated with simulated and real hyperspectral data.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128687981","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":"Detection of misallocated endmembers through the network based method","authors":"Sykas Dimitris, Karathanassi Vassilia","doi":"10.1109/WHISPERS.2010.5594857","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594857","url":null,"abstract":"Recently, a new logarithmic mixed pixel classification method has been developed through the establishment of appropriate networks. Based on the fact that natural targets do not consist of equally distributed components, the Network Based Method (NBM) alerts the user for non-sampled endmembers in the image scene. In this paper, detection of misallocated endmembers in the hyperspectral space is investigated through the Network Based Method. Detection relies on the fact that misallocation of an endmember in the hyperspectral space affects its signature because the endmember includes spectral components from other endmembers, mainly from the one which is approached mostly. Three experiments were implemented and their results were compared with the Sum to One Constraint Least Square (SCLS) method's results. Experiments showed efficiency of the method to detect two endmembers with common components.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127178740","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":"Hyperspectral remote sensing of vegetation growing condition and regional environment","authors":"Bing Zhang","doi":"10.1109/WHISPERS.2010.5594859","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594859","url":null,"abstract":"A growing nμmber of studies in recent years have focused on how to use remote sensing for dynamic monitoring and effective evaluation of vegetation conditions and vegetation growing environment in mining areas, which will provide a scientific basis for making policies for controlling the environment in mining areas. In this paper, airborne hypersectral remote sensing data — HyMap images in the Mount Lyell mining area of Australia and Hyperion images in Dexing copper mining area of China were used. Analyses based on the biogeochemical effect of vegetation and living creatures in the mining area and the vegetation spectrμm and vegetation indices, two vegetation indices: Vegetation Inferiority Index (VII) and Water Absorption Decorrelative Index (WDI) have been used and developed. Experimental results show that VII can effectively reveal the vegetation growth conditions and growing environment in the mining area. The sensitivity of VII is shown to be superior to the traditional vegetation index — NDVI. This has also been verified by the application of Hyperion image-derived VII in Dexing copper mining area. WDI can effectively identify the area that contains hematite, especially the hematite areas that are covered with sparse vegetation. The two proposed indices are effective indicators for ecological environmental monitoring in mining areas.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127410780","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":"Detection of occluded targets using thermal imaging spectroscopy","authors":"M. Shimoni, C. Perneel, J. Gagnon","doi":"10.1109/WHISPERS.2010.5594934","DOIUrl":"https://doi.org/10.1109/WHISPERS.2010.5594934","url":null,"abstract":"Automatic detection of occluded targets from a sequence of images is an interesting area of research for defense related application. In this paper, change detection methods are investigated for the detection of buried improvised explosive devices (IED) using temporal thermal hyperspectral scenes. Specifically, the paper assesses the detection of buried small aluminium plates using the TELOPS Hyper-Cam sensor and by applying two change detection algorithms: multivariate statistical based method (Cross-Covariance (CC)) and class-conditional change detector (QCC). It was found that spectral based change detection is a good method for the detection of buried IED under disturbed soil. Moreover, the Cross-Covariance (CC)) and the class-conditional (QCC) change detector were able to detect changes using short temporal sequences as long temporal sequences pairs.","PeriodicalId":193944,"journal":{"name":"2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127135702","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}